Image forming apparatus

An image forming apparatus which forms an image by forming an electrostatic latent image on a photosensitive member with a laser beam, developing the electrostatic latent image with a developer to obtain a developer image, and transferring the developer image to a sheet, the image forming apparatus including: a light source which outputs the laser beam for exposing the photosensitive member; a PLL circuit which generates a multiplied clock that is obtained by multiplying a reference clock; a pulse-width modulating circuit which outputs a pulse-width-modulated signal based on image data and the multiplied clock in order to drive the light source; and a CPU which obtains image data to be input to the pulse-width modulating circuit and, when it is unnecessary to output the pulse-width-modulated signal based on the obtained image data, controls the PLL circuit so as not to generate the multiplied clock.

Image forming apparatus

A light sensor generates a detection signal upon receiving laser light. A rotation sensor generates a rotation signal in synchronization with rotation of a polygon motor. A mirror-rotation-signal generating section generates a mirror rotation signal, based on the detection signal. A motor-rotation-signal generating section generates a motor rotation signal, based on the rotation signal. A phase-difference measuring section measures a phase difference between the motor rotation signal and the mirror rotation signal A prediction-signal generating section generates a prediction signal that is delayed from the motor rotation signal by the phase difference. A switching section switches a control mode between: a mirror control mode in which the mirror rotation signal is used to control a rotational speed of the polygon mirror; and a prediction control mode in which the prediction signal is used to control the rotational speed. A motor driver drives the polygon motor in the selected control mode.

Electrophotographic image forming apparatus and scanning method thereof

An electrophotographic image forming apparatus including a light scanning device to scan first and second light beams, a synchronization signal detector to receive a portion of the first light beam scanned by the light scanning device and to generate a first horizontal synchronization signal, and a video signal processor including a second horizontal synchronization signal generating unit to count a synchronization signal offset and generate a second horizontal synchronization signal regarding the second light beam when the first horizontal synchronization signal is transmitted from the synchronization signal detector, and a video controller to transfer video data to the light scanning device based on the first and second horizontal synchronization signals.

Imaging head for a flat bed scanner

A method for imaging using a flatbed imaging system includes providing first imaging data to a first imaging source; providing second imaging data to a second imaging source; imaging a first beam from the first imaging source at a first height on a rotating multi-facet spinner; imaging a second beam from the second imaging source at a second height on the rotating multi-facet spinner; distributing the first beam on a first location on a printing plate; and distributing the second beam on a second location on a the printing plate.

Multi-resolution segmented image sensor

A method of detecting and correcting imaging defects in a media printed on a high-speed multi-color printer includes providing a multisensory imaging device ( 10 ); illuminating the media; sensing images on the media at high resolution with at least one high resolution sensor ( 20 ) as it passes the multisensory imaging device; transmitting an output of the high resolution sensor to a controller ( 19 ); sensing images on the media at low resolution with at least one low resolution sensor ( 24 ); calculating a correction for stitch; adjusting a timing of image data provided to image writers to align the inkjets to produce an optimal cross-track line; and providing a full page view from the low resolution sensor.

RECORDING APPARATUS AND CONTROL METHOD THEREOF

A recording apparatus includes a head including a wire and performing recording on a medium by allowing the wire to strike the medium, a temperature detection unit that detects a temperature of the head, a driving circuit for driving the wire, and a control unit that controls an energization state of the driving circuit. The control unit switches the energization state of the driving circuit between an ON state and an OFF state at each time determined by the control unit, based on the temperature detected by the temperature detection unit such that a current flowing in the driving circuit is kept constant, when the head performs recording on the medium. 1. A recording apparatus comprising:a head that includes a wire and performs recording on a medium by allowing the wire to strike the medium;a temperature detection unit that detects a temperature of the head;a driving circuit for driving the wire; anda control unit that controls an energization state of the driving circuit,wherein the control unit switches the energization state of the driving circuit between an ON state and an OFF state at each time determined by the control unit, based on the temperature detected by the temperature detection unit, when the head performs recording on the medium.2. The recording apparatus according to claim 1 , further comprising:a voltage detection unit that detects a voltage applied to the driving circuit,wherein the control unit switches the energization state of the driving circuit between the ON state and the OFF state at each time determined by the control unit, based on the temperature of the head detected by the temperature detection unit and the voltage detected by the voltage detection unit, when the head performs recording on the medium.3. The recording apparatus according to claim 1 ,wherein the control unit controls a signal which is input to the driving circuit so as to switch the energization state of the driving circuit to thereby control the energization state of ...

IMAGE READING DEVICE, METHOD OF ADJUSTING DISTANCE BETWEEN DOCUMENT AND LIGHT RECEIVING SENSOR IN THE DEVICE, AND DISTANCE ADJUSTMENT PROGRAM

An image reading device includes: light receiving sensors configured to read an image of a document conveyed in a sub-scanning direction and be arranged with an interval in a main scanning direction; one pair of document conveying rollers configured to be provided in front and back of the light receiving sensors in a document conveying direction; a detection unit configured to detect an image overlap amount in an image overlap area and/or an image missing amount in an image missing area; an adjustment amount determination unit configured to determine an adjustment amount for adjusting a distance between the document and the light receiving sensors based on the image overlap amount and/or image missing amount detected; and a drive unit configured to adjust a distance between the document and the light receiving sensors by displacing one of the document conveying rollers and light receiving sensors according to the adjustment amount. 1. An image reading device comprising:a plurality of light receiving sensors, which use an optical shrink system, configured to read an image of a document conveyed in a sub-scanning direction and be arranged with an interval in a main scanning direction, the plurality of light receiving sensors arranged so that border parts of reading areas read by adjacent two of the light receiving sensors in a main scanning direction correspond to each other on or near a reference conveyance plane of the document;at least one pair of document conveying rollers configured to be provided in front and back of the plurality of light receiving sensors in a document conveying direction;a detection unit configured to detect an image overlap amount in an image overlap area which occurs when a part of the document in a main scanning direction is redundantly read by the adjacent two light receiving sensors in a case where the document is conveyed at a position apart from the reference conveyance plane as being away from the light receiving sensors and/or an ...

IMAGE FORMING APPARATUS PERFORMING PROCESSING IN ACCORDANCE WITH REFLECTIVE SURFACE OF ROTATING POLYGONAL MIRROR FOR SCANNING PHOTOSENSITIVE MEMBER

An image forming apparatus includes: a specification unit configured to perform surface specification processing for specifying a reflective surface that deflects light; a correction unit configured to perform correction processing for correcting image data in accordance with which reflective surface deflects light; and a control unit configured to control so as to cause scanning of a first photosensitive member to start before the surface specification processing completes, and control so as to, after the surface specification processing completes, cause the correction processing to be performed, with respect to image data for causing light to be emitted from a second light source and in accordance with a specification result of the surface specification processing, and cause scanning of the second photosensitive member to start. 1. An image forming apparatus , comprising:a first light source and a second light source;a first photosensitive member corresponding to the first light source and a second photosensitive member corresponding to the second light source;a transfer unit configured to transfer a first image formed on the first photosensitive member to an image carrier, and to transfer a second image formed on the second photosensitive member onto the image carrier by overlapping the second image on the first image;a deflection unit configured to deflect light emitted by the first light source and the second light source so that the light emitted by the first light source and the second light source scans respectively corresponding photosensitive members, using at least one rotating polygonal mirror that has a plurality of reflective surfaces;a specification unit configured to perform surface specification processing for specifying a reflective surface that deflects light, out of the plurality of reflective surfaces of the rotating polygonal mirror, in a state where the rotating polygonal mirror is rotating;a correction unit configured to perform correction ...

INFORMATION PROCESSING APPARATUS ADJUSTING CONDITION DATA FOR CONTROLLING PRINTING DEVICE HAVING PRINT HEAD

An information processing apparatus is configured to perform: acquiring target image data representing a target image made up of a plurality of partial images; determining whether a specific condition is met for each of the plurality of partial images; selecting a direction-determining method of a printing direction for each of the plurality of partial images in accordance with a determination result; determining whether the selected direction-determining method matches a correct method; and adjusting condition data for controlling a printing device so as to increase selectability of the correct method in response to determining that the selected direction-determining method differs from the correct method. The specific condition indicates that an image evaluation value be greater than or equal to a threshold. The image evaluation value represents an expected color difference between a first image printed by a first-directional partial print and a second image printed by a second-directional partial print. 1. An information processing apparatus configured to adjust condition data for controlling a printing device , the printing device including: a print head having a plurality of nozzle groups including a first nozzle group and a second nozzle group arranged in a main scanning direction , the first nozzle group including a plurality of first nozzles arranged in a sub-scanning direction crossing the main scanning direction , each of the plurality of first nozzles being configured to eject a droplet of ink in a first color onto a printing medium , the second nozzle group including a plurality of second nozzles arranged in the sub-scanning direction , each of the plurality of second nozzles being configured to eject a droplet of ink in a second color onto the printing medium; a reciprocating device configured to perform a main scan moving the print head relative to the printing medium in a printing direction , the printing direction being set to one of a first ...

IMAGE READING DEVICE, IMAGE FORMING APPARATUS PROVIDED THEREWITH, AND METHOD FOR CONTROLLING IMAGE READING DEVICE

An image reading device has a motor, an optical sensor (a light emitting portion, a light receiving portion), a carriage, a motor, a moving portion for rotating a belt, a pulse generating gear provided with a plurality of light shielding teeth along its circumference, and a control portion. The light shielding teeth of the pulse generating gear pass through a gap between the light emitting portion and the light receiving portion. First and second widths are set such that the movement amount of the pulse generating gear resulting from the motor rotating one step is equal to or larger than both the width of each of the light shielding teeth (first width) and the width of the interval between adjacent light shielding teeth (second width). The control portion recognizes when, during standby of the carriage, the level of an output signal changes. 1. An image reading device comprising:a stepping motor;an optical sensor including a light emitting portion and a light receiving portion, the light receiving portion being arranged at a distance from a light emission surface of the light emitting portion and outputting an output signal;a carriage including at least a lamp which radiates light toward a document;a moving portion including an endless belt, a driving gear and a driven gear around which the belt is wound, and a first transmission gear via which a drive of the stepping motor is transmitted to the driving gear to rotate the belt, the moving portion moving the carriage fitted to the belt in a sub-scanning direction by rotation of the driving gear;a pulse generating mechanism including a second transmission gear which meshes with a rotary shaft of the stepping motor or with one of the gears of the moving portion, and a pulse generating gear which rotates based on a driving force of the second transmission gear and which is provided with a plurality of light shielding teeth along a circumference thereof; anda control portion which controls rotation and magnetic ...

IMAGE READING DEVICE

An image reading device includes at least one reference portion that is provided in a reading area of a reading unit provided with a moving mechanism, a memory unit that stores, as an initial value, positional data of the reference portion that is read by the reading unit, an acquisition unit that reads the positional data of the reference portion and acquires a displacement amount of the read positional data from the initial value, and an error handling unit that performs error handling when the displacement amount exceeds a predetermined value. 1. An image reading device comprising:at least one reference portion that is provided in a reading area of a reading unit provided with a moving mechanism;a memory unit that stores, as an initial value, positional data of the reference portion that is read by the reading unit;an acquisition unit that reads the positional data of the reference portion and acquires a displacement amount of the read positional data from the initial value; andan error handling unit that performs error handling when the displacement amount exceeds a predetermined value.2. An image reading device comprising:at least one reference portion that is provided in a reading area of a reading unit that includes a moving mechanism;a memory unit that stores, as an initial value, positional data of the reference portion that is read by the reading unit;an acquisition unit that reads the positional data of the reference portion and acquires a displacement amount of the read positional data from the initial value; anda correction unit that corrects, based on the displacement amount, read data obtained by reading a reading target.3. The image reading device according to claim 1 ,wherein the at least one reference portion includes a plurality of reference portions.4. The image reading device according to claim 3 ,wherein the plurality of reference portions are parallel to each other.5. The image reading device according to claim 2 ,wherein the reference portion ...

OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME

An optical scanning device includes a deflector configured to deflect first and second beams to scan an effective area of a first scanned surface in a main scanning direction, and first and second imaging optical systems configured to guide the first and second beams deflected by the deflector to first and second areas, respectively, which are included in the effective area and different from each other in the main scanning direction. In the main scanning direction, the first area and the second area are asymmetric in width with respect to an optical axis. 1. An optical scanning device comprising:a deflector configured to deflect first and second beams to scan an effective area of a first scanned surface in a main scanning direction; andfirst and second imaging optical systems configured to guide the first and second beams deflected by the deflector to first and second areas which are included in the effective area and different from each other in the main scanning direction,wherein in the first area, a width of a third area, in the first area, on a side distant from the second area with respect to a first optical axis of the first imaging optical system is longer than a width of a fourth area, in the first area, on a side close to the second area with respect to the first optical axis in the main scanning direction, andwherein in the second area, a width of a fifth area on a side distant from the first area with respect to a second optical axis of the second imaging optical system is longer than a width of a sixth area on a side close to the first area with respect the second optical axis in the main scanning direction.2. The optical scanning device according to claim 1 , wherein the first and second beams are incident on the deflector from different sides from each other with respect to a reference plane including a rotational axis of the deflector and perpendicular to the main scanning direction.3. The optical scanning device according to claim 2 , wherein in the ...

IMAGE FORMING SYSTEM, INTEGRATED CIRCUIT CHIP, AND IMAGE FORMING APPARATUS

An integrated circuit chip configured to be connected to an image forming apparatus having a light source, a photosensitive member, and a light receiver includes a synchronizing signal output circuit, a data output circuit, an OR circuit, a chip-side communicator, first and second wiring lines. The synchronizing signal output circuit is configured to output a synchronizing signal for lighting the light source. The data output circuit is configured to output an image data signal for lighting the light source. The OR circuit is configured to output a lighting signal that is a logical sum of the synchronizing signal and the image data signal. The chip-side communicator is configured to transmit the lighting signal to the image forming apparatus. The first wiring line connects the synchronizing signal output circuit with the OR circuit. The second wiring line connects the data output circuit with the OR circuit. 1. An image forming system comprising:an integrated circuit chip; andan image forming apparatus configured to be connected to the integrated circuit chip, the image forming apparatus comprising:a light source;a motor;a rotating member configured to be rotated by the motor and to reflect a light beam emitted from the light source;a photosensitive member configured to be irradiated by the light beam reflected by the rotating member;a light receiver configured to receive the light beam reflected by the rotating member; anda rotation controller configured to control rotation of the motor, by switching a signal for controlling rotation of the motor between a frequency signal having frequency depending on a rotational speed of the motor and an output signal that is outputted in response to reception of the light beam by the light receiver,the integrated circuit chip comprising:a synchronizing signal output circuit configured to output a synchronizing signal for lighting the light source;a data output circuit configured to output an image data signal for lighting the ...

Image forming apparatus

An image forming apparatus includes a light source, a reflector, a photosensitive member, a light receiver, and an integrated circuit chip. The integrated circuit chip outputs, to the light source, a lighting signal for controlling lighting of the light source. The integrated circuit chip includes a synchronizing signal output circuit, a receiver, a first OR circuit, and a first wiring line. The synchronizing signal output circuit is configured to output a synchronizing signal for lighting the light source. The receiver is configured to receive a first image data signal outputted from an external circuit, the first image data signal being for lighting the light source. The first OR circuit is configured to output a first lighting signal that is a logical sum of the synchronizing signal and the first image data signal. The first wiring line connects the synchronizing signal output circuit with the first OR circuit.

Image Reader, and Method and Computer-Readable Medium for the Same

An image reader including a document table having a reference point, a first region of a sheet having a predetermined size when a vertex of the sheet is positioned on the reference point, and a second region, a changing mechanism changing a reading position in a sub scanning direction, and a controller configured to control the changing mechanism to change the reading position to a first position such that a distance in the sub scanning direction between the reference point and the first position corresponds to a length of the predetermined sheet size in the sub scanning direction, acquire specific digital data of the second region through image reading in the first position with a light source turned off, compare a particular value of the specific digital data with a criterion value within the second region, and determine a state of a document cover based on the comparison. 1. An image reader comprising: a reference point on which a vertex of the document is positioned;', 'a first region defining an area of a predetermined sheet size with respect to the reference point; and', 'a second region different from the first region;, 'a document table configured to support a document placed thereon, the document table havinga document cover movable between an open state and a closed state, the document cover being configured to cover an upper surface of the document table when the document cover is in the closed state;a reading unit comprising a light source configured to emit light toward the document placed on the document table, the reading unit being configured to perform image reading on a line-by-line basis along a main scanning direction, and output analog data as read data;a converter configured to convert the analog data output from the reading unit into digital data;a changing mechanism configured to change a reading position where image reading is performed, in a sub scanning direction perpendicular to the main scanning direction; and control the changing ...

DOCUMENT CONVEYING DEVICE AND IMAGE FORMING APPARATUS

A document conveying device is used in common for a double-sided reading specification in which images on one face and the other face of a document conveyed along a conveying path are read and for a single-sided reading specification in which the image on the one face of the document is read. The document conveying device includes a recess, a cover member and a supporting part. In the recess, a member dedicated to the double-sided reading specification is supported at the double-sided reading specification. The member dedicated to the double-sided reading specification is used for reading the image on the other face. The cover member closes the recess at the single-sided reading specification. By the supporting part, the member dedicated to the double-sided reading specification is detachably supported at the double-sided reading specification and the cover member is detachably supported at the single-sided reading specification. 1. A document conveying device used in common for a double-sided reading specification in which images on one face and the other face of a document conveyed along a conveying path are read and for a single-sided reading specification in which the image on the one face of the document is read , the document conveying device comprising:a recess in which a member dedicated to the double-sided reading specification is supported at the double-sided reading specification, the member dedicated to the double-sided reading specification being used for reading the image on the other face;a cover member which closes the recess at the single-sided reading specification, anda supporting part by which the member dedicated to the double-sided reading specification is detachably supported at the double-sided reading specification and the cover member is detachably supported at the single-sided reading specification.2. The document conveying device according to claim 1 , comprising a guide member guiding the other face of the document along the conveying ...

IMAGE READING APPARATUS AND IMAGE READING METHOD

In accordance with an embodiment, an image reading apparatus comprises a carriage, a stepping motor and a processor. The carriage acquires an image. The stepping motor moves the carriage. The processor outputs a first clock signal for driving the stepping motor if a present position of the carriage is unknown and outputs a second clock signal, of which a frequency is higher than that of the first clock signal, for driving the stepping motor if the present position of the carriage can be recognized. 1. An image reading apparatus , comprising:a carriage for acquiring an image;a stepping motor configured to move the carriage; anda processor configured to make a first clock signal to be output to drive the stepping motor if a present position of the carriage is not a predetermined position and make a second clock signal to be output to drive the stepping motor if the present position of the carriage is recognized, a frequency being higher than that of the first clock signal.2. The image reading apparatus according to claim 1 , whereinthe first clock signal is used in a closed loop control; andthe second clock signal is used in an open loop control.3. The image reading apparatus according to claim 1 , whereinthe processor sets the configuration of a second clock and outputs the second clock signal in accordance with the configuration.4. The image reading apparatus according to claim 1 , whereinthe processor generates the first clock signal, counts the first clock signal and executes predetermined operations if the count number of the first clock signals is coincident with a predetermined count threshold value during the output of the second clock signal.5. The image reading apparatus according to claim 4 , whereinthe predetermined operations comprise operations for outputting a synchronization signal enabling acquisition of the image.6. The image reading apparatus according to claim 5 , whereinthe predetermined count threshold value corresponds to a position at which the ...

DATA MANAGEMENT IN A LINEAR-ARRAY-BASED MICROSCOPE SLIDE SCANNER

Systems and methods for capturing image data using a line scan camera. In an embodiment, a line scan camera captures image data of a sample as a plurality of image stripes. A processor may coarsely align two or more of the plurality of image stripes according to a synchronization process while the line scan camera is capturing at least one of the plurality of image stripes. Subsequently, the processor may also finely align the two or more image stripes using pattern matching. 1. A system for capturing image data using a line scan camera , the system comprising:an objective lens positioned for viewing at least a portion of a sample during constant relative motion;a line scan camera optically coupled to the objective lens and configured to capture image data of the sample as a plurality of image stripes; andat least one processor configured to,while the line scan camera is capturing at least one of the plurality of image stripes of the sample, coarsely align two or more adjacent ones of the plurality of image stripes of the sample, and,subsequently, finely align the two or more adjacent ones of the plurality of image stripes of the sample.2. The system of claim 1 , further comprising an illumination source claim 1 , wherein the synchronization process comprises:for each of the two or more image stripes, capturing an area comprising an area preceding a predetermined scan area, the scan area, and an area following the scan area, and, during capture by the line scan camera of one or more lines of image data corresponding to a beginning of the scan area, using the illumination source to illuminate the one or more lines of image data; and,aligning the two or more image stripes based on the illuminated one or more lines of image data in each of the two or more image stripes.3. The system of claim 2 , wherein the at least one processor claim 2 , prior to storing each of the two or more image stripes claim 2 , eliminates claim 2 , from each image stripe claim 2 , image data ...

IMAGE FORMING APPARATUS

An image forming apparatus includes an image reading device; an image forming device including a photoconductor, a charger, an exposure device including a light-emitting element, a memory to store a first correction value for correction a light emission amount of the light-emitting element, and a driver to drive the light-emitting element, a developing device, a transfer device, and a fixing device. The image forming apparatus further includes a processor to calculate a second correction value for correcting the light emission amount, based on density data of image data of a predetermined pattern on a recording medium; calculate a third correction value for correcting the light emission amount, based on the first correction value and the second correction value; and determine, before calculating the third correction value, whether placement of the recording medium on the reading table is correct based on the density data. 1. An image forming apparatus comprising:an image reading device including a reading table, the image reading device to generate image data from reading of a pattern on a recording medium placed on the reading table; a photoconductor;', 'a charger to charge a surface of the photoconductor;', a light-emitting element;', 'a memory to store a first correction value for correcting a light emission amount of the light-emitting element; and', 'a driver to drive the light-emitting element; and, 'an exposure device to expose the charged surface of the photoconductor to form an electrostatic latent image on the photoconductor, the exposure device including, 'a developing device to supply toner to the electrostatic latent image to form a toner image;', 'a transfer device to transfer the toner image onto a recording medium; and', 'a fixing device to fix the toner image on the recording medium; and, 'an image forming device including cause the image forming device to form a predetermined pattern on the recording medium and cause the image reading device to ...

IMAGE FORMING APPARATUS

An image forming apparatus includes a first medium scanned with a first signal, a second medium scanned with a second signal, a rotary polygon mirror that deflects the first and second signals, a synchronization signal generation circuit that generates a synchronization signal representing a time to start scanning the first medium, and at least one pseudo synchronization signal generation circuit that generates a pseudo synchronization signal with the synchronization signal. The pseudo synchronization signal represents a time to start scanning the second medium. Based on a previously calculated period of the synchronization signal and a period of the synchronization signal counted on a particular surface of the polygon mirror, the pseudo synchronization signal generation circuit generates a particular value for generating the pseudo synchronization signal. Based on the particular value, the pseudo synchronization signal generation circuit starts generating the pseudo synchronization signal when the synchronization signal is enabled. 1. An image forming apparatus comprising:a first scanned medium configured to be scanned with a first optical signal based on first image data;a second scanned medium configured to be scanned with a second optical signal based on second image data;a rotary polygon mirror configured to deflect the first optical signal and the second optical signal;a synchronization detection signal generation circuit configured to generate a synchronization detection signal representing a first scanning start time to start scanning the first scanned medium; and based on a previously calculated period of the synchronization detection signal and a period of the synchronization detection signal counted on a particular surface of the rotary polygon mirror, generate a particular value for generating the pseudo synchronization detection signal, and', {'b': 2', '5, 'based on the generated particular value, starts generating the pseudo synchronization detection ...

IMAGE FORMING APPARATUS

An image forming apparatus includes a control unit: starting up a rotary polygon mirror based on a first signal output by a driving unit thereof; causing a light source to emit a laser-beam while controlling a rotational speed of the rotary polygon mirror based on the first signal to acquire a second signal output from a detecting unit of the laser-beam; turning off the light source after acquiring a phase relation between the first and second signals; causing a charging unit to charge a photosensitive member; making the laser-beam to enter onto the detecting unit without exposing the photosensitive member based on the phase relation in response to the rotational speed reaching a target speed; controlling the rotational speed based on the second signal in response to the laser-beam being entered; and starting image formation in response to the rotational speed converging within a predetermined range including the target speed. 1. An image forming apparatus comprising:a light source;a rotary polygon mirror configured to scan with a laser beam emitted from the light source;a driving unit configured to drive the rotary polygon mirror and output a first signal corresponding to rotation of the rotary polygon mirror;a photosensitive member on which a latent image is formed by scanning with the laser beam by the rotary polygon mirror;a charging unit configured to charge the photosensitive member before the latent image is formed on the photosensitive member;a developing unit configured to develop the latent image formed on the photosensitive member with toner to form a toner image;a detecting unit provided in a second region obtained by excepting a first region, which is to be scanned with the laser beam to form the latent image on the photosensitive member, from a range to be scanned with the laser beam, the detecting unit being configured to output a second signal in response to detection of the laser beam;a control unit configured to control a light amount of the laser ...

Position adjustment apparatus of imaging unit, the imaging unit, and image reading apparatus including the imaging unit

A position adjustment apparatus couples an imaging unit, which includes an imaging sensor and a focusing lens unit, to a base frame and is capable of adjusting a position of the imaging unit. The image sensor reads a document image and the focusing lens unit forms the document image by using the image sensor. The position adjustment apparatus may include an adjustment frame on which the focusing lens unit and the image sensor are installed, a height fixing member for coupling the adjustment frame to the base frame so as to fix a height of the adjustment frame at a fixed support position, and first and second adjustment members for coupling the adjustment frame to the base frame so as to adjust the height of the adjustment frame at first and second adjustable support positions. An image reading apparatus may include the imaging unit and the position adjustment apparatus.

Image Reader, and Method and Computer-Readable Medium for the Same

An image reader including a document table having a reference point, a first region of a sheet having a predetermined size when a vertex of the sheet is positioned on the reference point, and a second region, a changing mechanism changing a reading position in a sub scanning direction, and a controller configured to control the changing mechanism to change the reading position to a first position such that a distance in the sub scanning direction between the reference point and the first position corresponds to a length of the predetermined sheet size in the sub scanning direction, acquire specific digital data of the second region through image reading in the first position with a light source turned off, compare a particular value of the specific digital data with a criterion value within the second region, and determine a state of a document cover based on the comparison.

MITIGATION OF PRINT BANDING USING A SINGLE USER-CONTROLLABLE PARAMETER

A method of correcting print banding in a printer, including initiating the banding correction process, generating prints with various levels of banding based on different levels of voltages applied to the array of jets, receiving an input from the user selecting the preferred print, and adjusting voltage levels applied to jets corresponding to the preferred print. 1. A method of correcting banding in a printer , comprising:initiating banding correction;generating a series of prints, each print having a different level of banding, wherein the different levels of banding correspond to different levels of voltages applied to an array of jets;receiving an input from a user selecting a print;selecting a banding parameter corresponding to the selected print; andadjusting voltage levels applied to the jets to account for the banding parameter.2. The method of claim 1 , wherein initiating banding correction comprises receiving a user input to initiate banding correction.3. The method of claim 1 , wherein initiating banding correction comprises:generating a print;scanning the print for intensity; andidentifying a banding artifact.4. The method of claim 1 , wherein the different levels of voltage correspond to discrete voltage levels.5. The method of claim 1 , wherein the series of prints represent voltage levels both higher and lower than a current voltage.6. The method of claim 1 , wherein the series of prints include prints at different dither percentages of a single color.7. The method of claim 1 , wherein the series of prints include prints at different dither percentages of multiple colors.8. The method of claim 1 , wherein the method is repeatable as needed.9. A printer claim 1 , comprising:a controller to send signals;a printhead to receive signals from the controller and to produce prints based upon those signals;a memory to store normalization data for jets in the printhead, wherein the controller adjusts the signals sent to each jet of the printhead based upon the ...

LASER SCANNING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME

A laser scanning device includes a light source, a deflection portion, an image forming lens, and a light source control portion. The light source emits a light beam. The deflection portion causes the light beam emitted from the light source to scan a scanned surface by deflecting the light beam at a predetermined deflection angle. The image forming lens condenses the deflected light beam on the scanned surface, and causes the light beam to be scanned on the scanned surface in a scanning direction at an equal speed. The light source control portion controls the light source to irradiate the light beam to at least one section area among a plurality of section areas sectioned from each other in the scanning direction on the scanned surface, at a plurality of irradiation timings determined based on a position of the at least one section area in the scanning direction. 1. A laser scanning device comprising:a light source configured to emit a light beam;a deflection portion configured to cause the light beam emitted from the light source to scan a scanned surface by deflecting the light beam at a predetermined deflection angle;an image forming lens configured to condense the light beam deflected by the deflection portion on the scanned surface, and cause the light beam to be scanned on the scanned surface in a scanning direction at an equal speed; anda light source control portion configured to control the light source to irradiate, at a plurality of irradiation timings, the light beam to at least one section area among a plurality of section areas on the scanned surface, the plurality of section areas being sectioned from each other in the scanning direction, the plurality of irradiation timings being determined based on a position of the at least one section area in the scanning direction.2. The laser scanning device according to claim 1 , whereinthe light source control portion controls the light source to irradiate the light beam to all of the plurality of section ...

Image reading apparatus

An image reading apparatus according to the present invention includes: a conveyor which conveys an original in a first direction; a light transmitting member which is provided with coating in a first region of a surface facing the original; a reading unit which reads an image at a reading position of the original through the light transmitting member; and a controller which performs processing on the image and which changes the reading position by moving the reading unit when abnormality is detected in the processing. The coating includes a silicon-containing perfluoropolyether compound. An electrically-conductive member is provided in a second region located on the surface of the light transmitting member, upstream of the first region in a conveyance direction of the original. A contact angle of the coating at a position corresponding to the reading position in the first region is appropriately set.

IMAGE READING APPARATUS AND IMAGE SENSOR

An image reading apparatus that controls relative positions of a carriage and a document in a first direction using a motor, so as to read an image of the document on a line by line basis, the carriage being mounted with an image sensor and a light source. The image reading apparatus detects an amount of movement caused by the motor in the first direction and generates a first trigger signal in response to input of a synchronization signal generated in accordance with the detected amount of movement, the first trigger signal instructing to start accumulation of charge in the image sensor, and, after a predetermined amount of time since the synchronization signal used for generating the first trigger signal is input, generates a second trigger signal, the second trigger signal instructing to end accumulation of the charge being accumulated in the image sensor. 1. An image reading apparatus that controls relative positions of a carriage and a document in a first direction using a motor , so as to read an image of the document on a line by line basis , the carriage being mounted with an image sensor and a light source , the image reading apparatus comprising:a detecting unit configured to detect an amount of movement caused by the motor in the first direction; generate a first trigger signal in response to input of a synchronization signal generated in accordance with the detected amount of movement, the first trigger signal instructing to start accumulation of charge in the image sensor, and,', 'after a predetermined amount of time since the synchronization signal used for generating the first trigger signal is input, generate a second trigger signal, the second trigger signal instructing to end accumulation of the charge being accumulated in the image sensor; and, 'a generating unit configured to'}an outputting unit configured to sequentially output to the image sensor the first trigger signal and the second trigger signal generated by the generating unit.2. An image ...

DOCUMENT READING APPARATUS

An image reading apparatus corrects a deviation of a reading position of a document to accurately correct a luminance intensity distribution variation. Light is radiated to a shading plate () provided at a portion different from a reading position (luminance-intensity-distribution-variation correction reading line ) for a document (P) while displacing an illumination unit (), and shading correction is carried out based on a luminance value of reflection of the light. Light is radiated to the reading position before the document (P) is transported thereto while displacing the illumination unit () in the same direction as a displacement direction of the illumination unit () at a time of performing shading correction. The luminance value of the reflected light at this time is compared with the luminance value after the shading correction to generate luminance-value reference data before the reading of the document. 1. A document reading apparatus configured to read a document that is transported , comprising:a transporting unit configured to transport the document to a reading position;a guide member configured to guide the document that is transported at the reading position, the guide member having a curved surface configured to guide the document that is transported;a first light source unit configured to radiate light toward the reading position from an upstream side in a direction of transporting the document;a second light source unit configured to radiate light toward the reading position from a downstream side in the direction of transporting the document;a light receiving sensor configured to receive light and outputting a signal; anda control unit configured to control the reading position based on the signal output from the light receiving sensor when the light receiving sensor receives reflected light from the guide member under a state in which the first light source unit and the second light source unit radiate the light.2. A document reading apparatus ...

Image Scanning Device

An image scanning device has a platen, an openable cover, a cover sensor, a scanning unit, a condition setting unit enabling a user to set a first condition, and a controller. The controller is configured to detect an opening state of the cover based on a detection signal output by the cover sensor and obtain the image data representing a partial image which is an image of a first end portion of a scannable area of the scanning unit. When the cover is in the closed state, the controller applies an image processing based on the first condition set through the condition setting unit, and when the cover is in the opened state, the controller applies the image processing based on a second condition which is a particular condition set in advance and different from the first condition. 1. An image scanning device , comprising:a platen;a cover rotatably provided to the image scanning device, the cover being configured to be opened to expose the platen and closed to cover the platen;a cover sensor configured to output a detection signal based on an opening state of the cover;a scanning unit configured to sequentially scan an image, within a scannable area, from a first end toward a second end of the scannable area, an original sheet placed on the platen being included in the scannable area, the scanning unit generating image data representing the scanned image;a condition setting unit enabling a user to set a first condition to be used when the image is scanned; anda controller configured to perform:detecting the opening state of the cover based on the detection signal output by the cover sensor; andobtaining the image data representing a partial image which is an image of a first end portion of a scannable area of the scanning unit,wherein, when the cover is in the closed state, the controller applies an image processing based on the first condition set through the condition setting unit; andwherein, when the cover is in the opened state, the controller applies the image ...

LASER CONTROL IN SCANNERS

An example device including a laser source for generating a laser pulse, a scanner for mounting the laser source, and a motion detector for detecting a motion of the scanner when the laser pulse scans an object. The motion detector includes an optical sensor for generating an optical signal based on the motion of the scanner, and a controller. The controller determines a movement of the scanner and disables the laser source when the scanner ceases to move. 1. A device comprising:a laser source to generate a laser pulse;a scanner connected to the laser source;a motion detector to detect a motion of the scanner when the laser pulse scans an object, wherein the motion detector comprises an optical sensor to generate a first optical signal and receive a second optical signal from an encoder based on the motion of the scanner; anda controller communicatively coupled to the motion detector to disable the laser source when the scanner ceases to move.2. The device of claim 1 , wherein the optical sensor is to:generate an electrical pulse series when the scanner moves; andcease generating the electrical pulse series when the scanner ceases to move,wherein the motion detector comprises a low pass filter to filter the electrical pulse series, andwherein an output of the low pass filter is at a first level when the scanner ceases to move, and at a second level when the scanner moves.3. The device of claim 2 , wherein the controller comprises a comparator to compare the output of the low pass filter with a threshold level.4. The device of claim 3 , wherein the controller is to disable the laser source when the output of the low pass filter is below the threshold level.5. The device of claim 3 , wherein the controller is to enable the laser source when the output of the low pass filter is above the threshold level.6. The device of claim 1 , wherein the scanner is to scan the object in three dimensions using the laser pulse.7. A device comprising:a laser source to generate a laser ...

IMAGE FORMATION APPARATUS

An image formation apparatus according to an embodiment may include: a sensor unit provided at a movable part being movable in a main scanning direction; a driver configured to move a medium in a sub-scanning direction; a controller that controls the sensor unit, the movable part, and the driver, wherein the controller controls the sensor unit to detect the medium while controlling the movable part to move in the main scanning direction without driving the driver, and controls the sensor unit to detect the medium while controlling the movable part to move in the main scanning direction with controlling the driver to move the medium in the sub-scanning direction. 1. An image formation apparatus comprising:a sensor unit provided at a movable part being movable in a main scanning direction;a driver configured to move a medium in a sub-scanning direction;a controller that controls the sensor unit, the movable part, and the driver, wherein the controller controls the sensor unit to detect the medium while controlling the movable part to move in the main scanning direction without driving the driver, and controls the sensor unit to detect the medium while controlling the movable part to move in the main scanning direction with controlling the driver to move the medium in the sub-scanning direction.2. The image formation apparatus according to claim 1 , whereinthe controller comprises a medium processor that identifies a type of the medium based on a detection result of the sensor unit.3. The image formation apparatus according to claim 2 , whereinthe medium processor comprises a medium identifying part that execute a first identification process that controls the sensor unit to detect the medium while controlling the movable part to move in the main scanning direction without driving the driver, and a second identification process that controls the sensor unit to detect the medium while controlling the movable part to move in the main scanning direction with controlling ...

READING MODULE AND IMAGE READING DEVICE AND IMAGE FORMING APPARATUS THEREWITH

A reading module has a light source, an optical system imaging, as image light, reflected light of light radiated from the light source to a document, a sensor where a plurality of imaging regions for converting the image light imaged by the optical system into an electrical signal are arranged next to each other in the main scanning direction, and a housing the light source, the optical system, and the sensor. The optical system has a mirror array where a plurality of reflection mirrors whose reflection surfaces are aspherical concave surfaces are coupled together in an array in the main scanning direction, and an aperture stop portion adjusting the amount of the image light reflected from the reflection mirror. The amount of the image light striking the reflection mirror is increasingly small from opposite end parts of the reflection mirror toward its central part in the main scanning direction. 1. A reading module comprising:a light source which radiates light to a document;an optical system which images, as image light, reflected light of the light radiated from the light source to the document; anda sensor in which a plurality of imaging regions for converting the image light imaged by the optical system into an electrical signal are arranged next to each other in a main scanning direction, wherein a mirror array in which a plurality of reflection mirrors whose reflection surfaces are aspherical concave surfaces are coupled together in an array in the main scanning direction; and', 'a plurality of aperture stop portions each provided in an optical path of the image light between a reflection mirror and an imaging region of the sensor, the plurality of aperture stop portions adjusting an amount of the image light reflected from the reflection mirror, and, 'the optical system comprisesan amount of the image light that strikes the reflection mirror is increasingly small from opposite end parts of the reflection mirror toward a central part thereof in the main ...

IMAGE FORMING APPARATUS

An image forming apparatus, including: an image signal generating portion configured to generate an image signal as bit data obtained by splitting image data by a predetermined integer value for each pixel; a first storage portion configured to store a profile indicating magnification correction data for each of a plurality of regions in a main scanning direction; and a second storage portion configured to store a partial magnification granularity being a size of a processing unit used for splitting a partial magnification correction start value, wherein the image signal generating portion calculates a split region boundary address indicating a main scanning position at which a scanning region on the surface of a photosensitive member to be scanned by a light beam is split in the main scanning direction for each partial magnification granularity based on the partial magnification correction start value extracted from the profile and the partial magnification granularity. 1. An image forming apparatus , which is configured to form an image on a recording medium , comprising:an image signal generating portion configured to generate an image signal as bit data obtained by splitting image data by a predetermined integer value for each pixel;a light source configured to emit a light beam based on the image signal;a deflection device configured to deflect the light beam emitted from the light source so that the light beam scans a surface of a photosensitive member in a main scanning direction;a lens configured to image the light beam deflected by the deflection device on the surface of the photosensitive member;a first storage portion configured to store a profile indicating magnification correction data for each of a plurality of regions in the main scanning direction; anda second storage portion configured to store a partial magnification granularity being a size of a processing unit used for splitting a partial magnification correction start value,wherein the image ...

PHOTOELECTRIC CONVERSION ELEMENT, IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND PHOTOELECTRIC CONVERSION METHOD

Multiple photodetectors that photoelectric convert incident light to output a pixel signal; multiple analog/digital (A/D) convertors that A/D convert a plurality of pixel signals that are output by the photodetectors in parallel in a plurality of systems; a retaining unit that retains the pixel signals A/D converted in parallel by the A/D convertors in an aligned manner in one direction, to be arranged in reading order from a first pixel signal to a final pixel signal; and multiple transfer units that transfer the pixel signals arranged and retained by the retaining unit, sequentially from the first pixel signal from a first-pixel-signal retaining position toward a final-pixel signal retaining position of the retaining unit are included. 1. A photoelectric conversion element comprising:a plurality of photodetectors that are aligned in one direction, and that photoelectric convert incident light to output a pixel signal;a plurality of analog/digital (A/D) convertors that A/D convert a plurality of pixel signals that are output by the photodetectors in parallel in a plurality of systems;a retaining unit that retains the pixel signals A/D converted in parallel by the A/D convertors in an aligned manner in one direction, to be arranged in reading order from a first pixel signal to a final pixel signal; anda plurality of transfer units that transfer the pixel signals arranged and retained by the retaining unit, sequentially from the first pixel signal from a first-pixel-signal retaining position toward a final-pixel signal retaining position of the retaining unit.2. The photoelectric conversion element according to claim 1 , further comprisingan output unit that outputs the pixel signals transferred by the transfer units to an external, whereinthe output unit is arranged on a side of the final-pixel-signal retaining position of the retaining unit.3. The photoelectric conversion element according to claim 1 , whereinthe retaining unit is a first shift register, andthe ...

IMAGE FORMING APPARATUS

An image forming apparatus includes image forming devices, image output devices, an endless conveyor, a transfer device, holders, a detector, and circuitry. The image forming devices include image bearers. The image output devices form latent images on the image bearers. The image forming devices form visible images from the latent images. The transfer device transfers the visible images onto the endless conveyor that conveys the visible images in an image conveyance direction. The holders hold the image forming devices interchangeable at holding positions aligned in the image conveyance direction. The detector detects the visible images. The circuitry compares a first visible image of the visible images formed at a specific holding position of the holding positions with a second visible image of the visible images formed at another holding position of the holding positions on the endless conveyor, to correct misalignment between the first and second visible images. 1. An image forming apparatus comprising:a plurality of image forming devices corresponding to a plurality of colors,the plurality of image forming devices including a plurality of image bearers;a plurality of image output devices to form a plurality of latent pattern images on the plurality of image bearers,the plurality of image forming devices forming a plurality of visible pattern images from the plurality of latent pattern images;an endless conveyor;a transfer device to transfer the plurality of visible pattern images from the plurality of image bearers onto the endless conveyor;the endless conveyor conveying the plurality of visible pattern images in an image conveyance direction;a plurality of holders to hold the plurality of image forming devices interchangeable at a plurality of holding positions aligned in the image conveyance direction,the plurality of holding positions including a specific holding position;a detector to detect the plurality of visible pattern images on the endless conveyor; ...

IMAGE SIGNAL PROCESSING DEVICE, IMAGE READING APPARATUS

An image signal processing device includes a reference signal generating portion, a determination portion, and an extraction portion. The reference signal generating portion generates and outputs a reference signal that sequentially transmits reference pulses shifted from horizontal synchronization pulses on a horizontal synchronization signal by a predetermined shift time. The determination portion determines whether the horizontal synchronization pulses are normal by comparing time differences between input of the horizontal synchronization pulses and input of the reference pulses with the shift time. The extraction portion extracts line image data points from an image signal in synchronization with the input of the horizontal synchronization pulses that have been determined as normal. 1. An image signal processing device in an image reading apparatus , the image signal processing device configured to extract line image data points from an image signal in synchronization with input of horizontal synchronization pulses , an image reading portion configured to sequentially read single line images, each serving as an image of a single line extending in a main scanning direction, from a document sheet and to output the image signal that sequentially transmits the line image data points that represent the single line images; and', 'a synchronization signal generating portion configured to generate and output a horizontal synchronization signal that sequentially transmits the horizontal synchronization pulses synchronized with timing of reading the single line images,, 'the image reading apparatus comprising a reference signal generating portion configured to generate and output a reference signal that sequentially transmits reference pulses shifted from the horizontal synchronization pulses by a shift time set in advance;', 'a determination portion configured to determine whether the horizontal synchronization pulses are normal by comparing time differences between the ...

IMAGE FORMING APPARATUS

Disclosed is an image forming apparatus, including: n laser elements arranged in the sub-scanning direction and configured to simultaneously scan an image; a pixel selection unit configured to execute a thinning process in which the pixels are thinned by selecting m pixels among n pixels arranged in the sub-scanning direction, by changing positions of the pixels to be selected according to positions in the main scanning direction; a pulse width modulation processing unit configured to sequentially convert image data corresponding to the m pixels into m pulse width modulation signals; a transmission unit configured to transmit the m pulse width modulation signals in parallel; an assignment unit configured to assign the m pulse width modulation signals to m laser elements corresponding to the positions of the m pixels; and a driving unit configured to drive the laser elements in accordance with the assigned pulse width modulation signals. 1. An image forming apparatus for forming a two-dimensional image in which pixels are arranged in a main scanning direction and a sub-scanning direction which is perpendicular to the main scanning direction , comprising:n laser elements arranged in the sub-scanning direction and configured to simultaneously scan an image in the main scanning direction by using laser lights emitted from the n laser elements to simultaneously form the image having n lines in the main scanning direction, n being an integer which is 2 or more;a pixel selection unit configured to execute a thinning process in which the pixels are thinned to m/n by selecting m pixels among n pixels arranged in the sub-scanning direction, m being an integer which is 1 or more, and the thinning process being executed for the image having the n lines by changing positions of the pixels to be selected according to positions in the main scanning direction;a pulse width modulation processing unit configured to sequentially convert image data corresponding to the m pixels ...

IMAGE FORMING APPARATUS THAT SELECTS REFERENCE SIDE FOR PRINT POSITION ADJUSTING AND METHOD OF CONTROLLING IMAGE FORMING APPARATUS

An image forming apparatus that corrects a print position of an image using an optimum reference side of a sheet when performing print position adjustment. Image data is converted based on conversion conditions. An image on a sheet is formed based on the converted image data. On the sheet, the image forming unit forms a test image for detecting a misalignment of a position of an image to be formed on a first surface of the sheet and a position of an image to be formed on a second surface, which is different from the first surface, of the sheet. Read data is acquired which is read from the test image and output from a reading device, and the conversion conditions are generated based on the read data and a selected reference position of the sheet. 1. An image forming apparatus comprising:a conversion unit configured to convert image data based on conversion conditions;an image forming unit configured to form an image on a sheet based on the image data converted by the conversion unit;a selection unit configured to select a reference position of the sheet; anda controller configured to control the image forming unit to form a test image on the sheet, acquire read data related to the test image formed on the sheet by the image forming unit, and generate the conversion conditions based on the read data and the reference position selected by the selection unit,wherein the test image is used for detecting a misalignment of a position of an image to be formed on a first surface of the sheet by the image forming unit and a position of an image to be formed on a second surface, which is different from the first surface, of the sheet by the image forming unit, andwherein the read data is output from a reading device.2. The image forming apparatus according to claim 1 , further comprising a post-processing unit configured to perform post-processing on the sheet having the image formed thereon by the image forming unit claim 1 , based on post-processing information claim 1 , ...

IMAGE FORMING APPARATUS

Provided is an image forming apparatus configured to acquire a density of a test print image at each position in the main scanning direction, which is read by the image reading unit after a first test print image is formed, to correct a setting value of an exposure amount of an exposure device to a first light amount, which is higher than a reference light amount that is an exposure amount when the first test print image is formed, in an area where the acquired density is lower than a target density, to correct the exposure amount of the exposure device to a second light amount, which is lower than the reference light amount, in an area where the acquired density is higher than the target density, and to form a second test print image. On the basis of the second test print image, density correction is performed. 2. The image forming apparatus of claim 1 , wherein the first light amount and the second light amount are prescribed constant values.3. The image forming apparatus of claim 1 , wherein the first light amount is set to increase as the density of the first test print image decreases at each position in the main scanning direction claim 1 , andthe second light amount is set to decrease at each position in the main scanning direction as the density of the first test print image increases at each position in the main scanning direction. The present invention relates to an image forming apparatus.In general, in an electrophotographic image forming apparatus, an exposure device exposes a surface of a photoreceptor to form an electrostatic latent image, a developing device develops the formed electrostatic latent image to form a toner image, and the formed toner image is transferred to a recording medium, so that an image is formed.In the photoreceptor on which the electrostatic latent image is formed, irregularity of charging characteristics or sensitivity characteristics exists in an axial direction of a drum surface due to factors on manufacturing. Furthermore, ...

Image-forming apparatus

An image-forming apparatus includes a light-irradiation unit configured to move a spot of laser light on a surface of a photosensitive member at a non-constant scanning velocity in a main scanning direction to form a latent image on the photosensitive member, an image data correcting unit configured to correct a length in the main scanning direction of image data by inserting one or more image data pieces into the image data, the number of the image data pieces increasing as the scanning velocity increases, and/or extracting one or more image data pieces from the image data, the number of the image data pieces increasing as the scanning velocity decreases, and a brightness correcting unit configured to correct a brightness of the laser light so that an emission brightness increases as the scanning velocity increases and/or the emission brightness decreases as the scanning velocity decreases.

Image processing apparatus, control method for image processing apparatus, and storage medium

In one embodiment, a control method for an image processing apparatus including a reading unit configured to read a document image and a printing unit configured to print the document image read by the reading unit is provided. The control method includes detecting an error in process of reading by the reading unit, causing the reading unit to perform reread processing for rereading the document image based on the error being detected, and refraining, in a case where the image processing apparatus operates in a mode in which the printing unit starts printing without waiting for the reading unit to complete reading a document image, from causing the reading unit to perform the reread processing based on the error being detected.

IMAGE READING APPARATUS

An image reading apparatus includes: a reading unit which reads an original as an object to be read in a main scanning direction every time a command signal is inputted; a command unit which inputs the command signal to the reading unit; a conveying unit which conveys at least one of the original and the reading unit so as to change a relative position between the reading unit and the original in a sub scanning direction; a signal output unit which outputs a displacement signal every time the relative position is changed by a predetermined amount; and a control unit which controls the command unit. The command unit which operates in a first mode to output the command signal to the reading unit at a predetermined time interval and in a second mode to output the command signal to the reading unit at a timing synchronized with the displacement signal. 1. An image reading apparatus comprising:a reading unit configured to read an original in a main scanning direction every time a command signal is inputted to the reading unit;a command unit configured to output the command signal to the reading unit;a conveying unit configured to execute a conveyance processing for conveying at least one of the original and the reading unit so as to change a relative position between the reading unit and the original in a sub scanning direction;a signal output unit configured to output a displacement signal every time the relative position is changed by a predetermined amount; anda control unit configured to control the command unit,wherein the command unit operates in a first mode to output the command signal to the reading unit at a predetermined time interval, and in a second mode to output the command signal to the reading unit at a timing synchronized with the displacement signal,the conveyance processing includes an acceleration segment in which relative velocity between the original and the reading unit is accelerated to a predetermined velocity, a constant velocity segment in ...

IMAGE PROCESSING METHOD AND IMAGE PROCESSING APPARATUS

An image processing method includes an image encoding step of encoding data in which one channel in each pixel of image data including a plurality of pixels is configured by 2 bits or more into data in which the one channel is configured by 1 bit, a transfer step of transferring the encoded data to a printing apparatus, and an image decoding step of decoding the encoded data using the printing apparatus, in which, in the image encoding step, flag information indicating whether the pixel is a character or a line image or a photograph is assigned, and in the image decoding step, decoding is performed by selecting a first decoding method or a second decoding method based on the flag information. 1. An image processing method comprising:an image encoding step of encoding data in which one channel in each pixel of image data including a plurality of pixels is configured by 2 bits or more into data in which the one channel is configured by 1 bit;a transfer step of transferring the encoded data to a printing apparatus; andan image decoding step of decoding the encoded data in the printing apparatus, whereinin the image encoding step, flag information indicating whether the pixel is a character or a line image or a photograph is assigned, andin the image decoding step, decoding is performed by selecting a first decoding method or a second decoding method based on the flag information.2. The image processing method according to claim 1 , wherein claim 1 ,in the image encoding step, an error is diffused in a main scanning direction by using an error diffusion method to form the 1-bit data.3. The image processing method according to claim 1 , wherein claim 1 ,in the image decoding step, the 1-bit data is decoded into 8-bit data.4. The image processing method according to claim 1 , further comprising:an image compression step of further compressing the encoded data.5. The image processing method according to claim 4 , wherein claim 4 ,in the image compression step, a run-length ...

IMAGE FORMING APPARATUS FOR CONTROLLING IMAGE READING APPARATUS DEPENDING ON IMAGE PROCESSING CAPABILITY OF THE IMAGE FORMING APPARATUS, IMAGE READING APPARATUS, CONTROL METHOD THEREOF, AND STORAGE MEDIUM

An image forming apparatus which is capable of reducing a load on a data bus therein when controlling an image reading apparatus depending on its image processing capability. When acquired identification information about the image forming apparatus is included in a clock control table , a clock frequency for controlling hardware of the image reading apparatus in accordance with the clock control table , while setting the clock frequency therefor to a default setting of the clock control table when the acquired identification information is not included in the clock control table , wherein a minimum value of clock frequencies in the clock control table is set as the default setting of the clock control table 115-. (canceled)16. An image forming apparatus including a reading unit configured to execute a reading job for reading an image on an original , and an image processing unit configured to perform image processing to the image read by said reading unit , the image forming apparatus comprising:a first acquisition unit configured to acquire identification information about the image forming apparatus;a determination unit configured to determine whether or not the acquired identification information is included in a first table in which clock frequencies for respectively controlling hardware of a plurality of reading units are set for each of a plurality of pieces of identification information; anda setting unit configured to set a clock frequency for controlling hardware of the reading unit in accordance with the first table and the acquired identification information when it is determined that the acquired identification information is included in the first table, while setting the clock frequency for controlling the hardware of the reading unit to a predetermined setting when it is determined that the acquired identification information is not included in the first table.17. The image forming apparatus according to claim 16 , further comprising a holding unit ...

PIXEL CLOCK GENERATING DEVICE, IMAGE WRITING DEVICE, AND IMAGE FORMING APPARATUS

A pixel clock generating device includes a high-frequency clock generator, a comparer, a pixel clock generator, and a value switcher. The high-frequency clock generator is configured to generate a high-frequency clock. The comparer is configured to measure a time interval between a leading-end synchronizing signal and a trailing-end synchronizing signal in a main scanning and calculate an error between the time interval and a target value. The pixel clock generator is configured to generate a pixel clock based on the high-frequency clock and a pixel clock frequency and correct the pixel clock based on the error. The value switcher, including a plurality of groups of values with which the pixel clock is generated, is configured to switch between the plurality of groups of values according to a switching signal after the trailing-end synchronizing signal is inputted, the comparer calculates the error, and the pixel clock generator corrects the pixel clock. 1. A pixel clock generating device comprising:a high-frequency clock generator configured to generate a high-frequency clock;a comparer configured to measure a time interval between a leading-end synchronizing signal and a trailing-end synchronizing signal in a main scanning and calculate an error between the time interval and a target value;a pixel clock generator configured to generate a pixel clock based on the high-frequency clock and a pixel clock frequency and correct the pixel clock based on the error; anda value switcher including a plurality of groups of values with which the pixel clock is generated,the value switcher configured to switch between the plurality of groups of values according to a switching signal after the trailing-end synchronizing signal is inputted and after the comparer calculates the error and the pixel clock generator corrects the pixel clock.2. The pixel clock generating device according to claim 1 ,wherein the value switcher is configured to complete switching between the plurality ...

IMAGE READING DEVICE AND NON-TRANSITORY READABLE RECORDING MEDIUM

An image reading device comprises: a feeder that feeds a document along with a predetermined path; a first reading part that reads a first side of the document at a first position in the path and creates a first image; a second reading part that reads a second side of the document at a second position which is located posterior to the first position in the path and creates a second image; a synthesizing part that lays the first image and the second image on top of one another and creates a composite image; and a detecting part that detects a characteristic pattern of a specific document from the composite image created by the synthesizing part. 1. An image reading device comprising:a feeder that feeds a document along with a predetermined path;a first reading part that reads a first side of said document at a first position in said path and creates a first image;a second reading part that reads a second side of said document at a second position which is located posterior to said first position in said path and creates a second image;a synthesizing part that lays said first image and said second image on top of one another and creates a composite image; anda detecting part that detects a characteristic pattern of a specific document from said composite image created by said synthesizing part.2. The image reading device according to claim 1 , further comprising:a first stated image creating part that extracts an image component that has an image characteristic of said characteristic pattern from said first image created by said first reading part and creates a first stated image; anda second stated image creating part that extracts the image component that has the image characteristic of said characteristic pattern from said second image created by said second reading part and creates a second stated image.3. The image reading device according to claim 2 , whereinsaid first stated image creating part extracts a color component of said characteristic pattern from said ...

IMAGE FORMING APPARATUS AND IMAGE READING DEVICE

There is provided an image forming apparatus. A loading unit is capable of loading therein a plurality of documents. The document is conveyed from the loading unit to a document conveyance path. A reading member is configured to read an image of the document at a reading position set on the document conveyance path. A correction unit corrects a skew of the document with respect to a conveying direction. A correction execution unit executes a correction by the correction unit when a number of copies of the document is larger than a preset number. 1. An image forming apparatus comprising:a loading unit capable of loading therein a plurality of documents;a document conveyance path to which the document is conveyed from the loading unit;a reading member configured to read an image of the document at a reading position set on the document conveyance path;a correction unit that corrects a skew of the document with respect to a conveying direction; anda correction execution unit that executes a correction by the correction unit when a number of copies of the document is larger than a preset number.2. An image forming apparatus comprising:a loading unit capable of loading therein a plurality of documents;a document conveyance path to which the document is conveyed from the loading unit;a reading member configured to read an image of the document at a reading position set on the document conveyance path;a correction unit that corrects a skew of the document with respect to a conveying direction; anda correction execution unit that executes a correction by the correction unit when a number of copies of the document is large and not executes the correction when the number of copies of the document is small.3. An image forming apparatus comprising:a loading unit capable of loading therein a plurality of documents;a document conveyance path to which the document is conveyed from the loading unit;a reading member configured to read an image of the document at a reading position ...

IMAGE READING APPARATUS, CONTROL METHOD, STORAGE MEDIUM, AND SYSTEM

An image reading apparatus having a front surface reading unit for reading a front surface of a document and a back surface reading unit for reading a back surface of the document performs adjustment processing in such a manner that start positions of the obtained image data of the front surface and the back surface are each at a position corresponding to an integer multiple of a coding block, and encodes front-and-back combined image data that is based on the adjusted image data of the front surface and the back surface. The image reading apparatus then transmits the encoded front-and-back combined image data, first position information indicating an end edge of the image data of the front surface in the front-and-back combined image data, and second position information indicating an end edge of the image data of the back surface in the front-and-back combined image data. 1. An image reading apparatus having a front surface reading unit configured to read a front surface of a document and a back surface reading unit configured to read a back surface of the document , the image reading apparatus comprising:an obtaining unit configured to obtain image data of the front surface of the document that is output from the front surface reading unit and image data of the back surface of the document that is output from the back surface reading unit;an adjustment unit configured to perform adjustment processing in such a manner that a start position of the obtained image data of the front surface and a start position of the obtained image data of the back surface are each at a position corresponding to an integer multiple of a coding block;an encoding unit configured to encode front-and-back combined image data that is based on the adjusted image data of the front surface and the adjusted image data of the back surface; anda transmission unit configured to transmit the encoded front-and-back combined image data, first position information indicating an end edge position of ...

IMAGE-FORMING APPARATUS

An image-forming apparatus includes a light-irradiation unit configured to move a spot of laser light on a surface of a photosensitive member at a non-constant scanning velocity in a main scanning direction to form a latent image on the photosensitive member, an image data correcting unit configured to correct a length in the main scanning direction of image data by inserting one or more image data pieces into the image data, the number of the image data pieces increasing as the scanning velocity increases, and/or extracting one or more image data pieces from the image data, the number of the image data pieces increasing as the scanning velocity decreases, and a brightness correcting unit configured to correct a brightness of the laser light so that an emission brightness increases as the scanning velocity increases and/or the emission brightness decreases as the scanning velocity decreases. 1. An image forming apparatus including a photosensitive member , and a light-irradiation unit configured to form a latent image on the photosensitive member by scanning , with laser light , a plurality of sections in a main scanning direction at a non-constant scanning velocity , the image forming apparatus comprising:an image data changing unit configured to extract a pixel piece smaller in size than one pixel from image data or insert the pixel piece into the image data according to which of the sections in the main scanning direction data corresponds to among image data for scanning with the laser light; anda brightness changing unit configured to change an emission brightness of the laser light according to which of the sections in the main scanning direction the laser light corresponds to,wherein, in a first section in the main scanning direction, the image data changing unit changes a number of pixel pieces corresponding to the first section to a first number and the brightness changing unit changes an emission brightness of laser light corresponding to the first section ...

IMAGE RECORDING APPARATUS

In an image recording apparatus, a peak load that is the highest load applied to a carriage moving in a first direction in a first load region is highest at a first highest-load position. A second load is highest at a second highest-load position of a second load region. In a retry processing, when a stop position of the carriage which is detected by a detector is located between the first highest-load position and the second highest-load position, the controller moves the carriage in the first direction toward a target position after moving the carriage from the stop position in a second direction to a first retry position located downstream of a restoration position in the first direction. 1. An image recording apparatus , comprising:a carriage supporting an image recorder;a driving member configured to move the carriage along a moving path;a detector configured to detect a position of the carriage in the moving path and presence or absence of a stop of the carriage;a first load applier configured to apply a first load to the carriage moving in a first direction, by contacting the carriage moving in the first direction in a first load region of the moving path;a second load applier configured to apply a second load, different from the first load, to the carriage moving in the first direction in a second load region located downstream of the first load region in the first direction in the moving path; anda controller configured to control the driving member,wherein a peak load that is a highest load applied to the carriage moving in the first direction in the first load region is highest at a first highest-load position of the first load region, and the peak load is restored at the first highest-load position when the carriage is moved to a position located downstream of the first highest-load position in the first direction, thereafter moved, in a second direction opposed to the first direction, over a restoration position located downstream of the first highest- ...

Light scanning device and image forming apparatus with the same

A light scanning device includes: a first semiconductor laser 44 a that emits a light beam L 1; a polygonal mirror 42 that deflects the light beam L 1; a reflective mirror 64 a that reflects the light beam L 1 deflected by the polygonal mirror 42 and causes the light beam L 1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L 1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L 1 and set scanning timing of the photosensitive drum 13 using the light beam L 1 based on detection timing of the light beam L 1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64 a that reflects the light beam L 1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range α of the light beam L 1 corresponding to an effective scan area of the photosensitive drum 13.

IMAGE FORMING APPARATUS

In accordance with an embodiment, an image forming apparatus comprises a sensor and a controller. The sensor detects a Light for scanning a scanning area to synchronize a main scanning direction in the scanning area. The controller corrects a deviation amount of the main scanning direction by setting a print termination position of the light in the main scanning direction as a reference position based on a detection result of the sensor. 1. An image forming apparatus , comprising:a sensor configured to detect a light for scanning a scanning area to synchronize a main scanning direction in the scanning area; anda controller configured to correct a deviation amount of the main scanning direction by setting a launch termination position of the light in the main scanning direction as a reference position based on a detection result of the sensor.2. The image forming apparatus according to claim 1 , whereinthe sensor is arranged at an opposite side to the reference position in the main scanning direction.3. The image forming apparatus according to claim 1 , whereinthe controller corrects the deviation amount at a time when a main scanning magnification is changed.4. The image forming apparatus according to claim 2 , whereinthe controller corrects the deviation amount at a time when a main scanning magnification is changed.5. The image forming apparatus according to claim 1 , wherein the controller includes:a deviation amount calculation section configured to calculate the deviation amount based on (a) a launch start position of the light in the main scanning direction and (b) the launch termination position due to change of the main. scanning magnification, anda deviation amount correction section configured to correct the deviation amount by changing a main scanning magnification based on a calculation result of the deviation amount calculation section.6. The image forming apparatus according to claim 1 , further comprising:an intermediate transfer body;an decoloring ...

OPTICAL SCANNER, DISPLAY SYSTEM, AND MOBILE OBJECT

An optical scanner includes a light source to emit irradiation light, a light deflector to scan the irradiation light emitted from the light source in a first scanning direction and in a second scanning direction intersecting with the first scanning direction, a photodetector to detect the irradiation light when the light deflector scans a detection field, and circuitry to turn on the light source in a first irradiation field scanned by the light deflector from the detection field to an end in the first scanning direction and turn on the light source in a second irradiation field scanned by the light deflector from the end in the first scanning direction towards the detection field, and cause an edge of the first irradiation field on the detection field side to move to get close to the detection field from a position away from the detection field.

DEVICE AND METHOD FOR DEFLECTING A BEAM OF LIGHT

A device and a method for deflecting a beam of light. The device is developed together with: an adjustable deflection device; a closed-loop control unit, which is designed to generate an actuating signal by which the deflection device is controlled in a periodic movement for scanning a solid angle region with the aid of a beam of light deflected by the deflection device; and a detector device, which is designed to detect an impingement or a missing impingement of the scanning beam of light on the detector device, and to generate a measuring signal based thereon; the closed-loop control unit furthermore being designed to adapt the actuating signal based on at least the measuring signal. 110-. (canceled)11. A device for deflecting a beam of light , comprising:an adjustable deflection device;a closed-loop control unit designed to generate an actuating signal by which the deflection device is controlled in a periodic movement for scanning a solid angle region with the aid of a beam of light that the beam of light is deflected by the deflection device; anda detector device designed to detect an impingement or a missing impingement of the scanning beam of light on the detector device and to generate a measuring signal on the basis of the detection;wherein the closed-loop control unit is designed to adapt the actuating signal on the basis of at least the measuring signal.12. The device as recited in claim 11 , wherein the detector device is designed to detect the impingement or the missing impingement of the scanning beam of light on the detector device at least once in each period of a periodic movement about a fast axis of rotation of the scanning of the solid angle region.13. The device as recited in claim 12 , wherein the detector device has a first light detector and a second light detector claim 12 , which are designed to detect the impingement or the missing impingement of the scanning beam of light on the first light detector and the second light detector at least ...

Data processing apparatus and image forming apparatus having shift register for parallel and serial signal conversions

Separately providing a shift register for performing serial-to-parallel conversion on a BD signal and a shift register for performing parallel-to-serial conversion on a bit pattern to generate a PWM signal increases the scale of a circuit for adjusting a writing start position in the scanning direction of a light beam. Therefore, the shift register for performing serial-to-parallel conversion on a BD signal and the shift register for performing parallel-to-serial conversion on a bit pattern to generate a PWM signal are configured as a common register.

IMAGE RECORDING APPARATUS AND IMAGE RECORDING METHOD

An image recording apparatus includes: a laser emitting device configured to emit laser beams emitted from a plurality of laser light-emitting elements; an optical fiber array including a plurality of optical fibers provided corresponding to the laser light-emitting elements and configured to guide the laser beams emitted from the laser light-emitting elements to a recording object that relatively moves with respect to the laser emitting device, laser emitting portions of the respective optical fibers being arrayed in an array form in a predetermined direction; and an image recording unit configured to control the laser emitting device so as to irradiate the recording object which relatively moves with respect to the laser emitting device in a direction different from the predetermined direction, with laser beams via the optical fiber array, to heat the recording object and record an image. 1. An image recording apparatus comprising:a laser emitting device configured to emit laser beams emitted from a plurality of laser light-emitting elements;an optical fiber array including a plurality of optical fibers provided corresponding to the laser light-emitting elements and configured to guide the laser beams emitted from the laser light-emitting elements to a recording object that relatively moves with respect to the laser emitting device, laser emitting portions of the respective optical fibers being arrayed in an array form in a predetermined direction; andan image recording unit configured to control the laser emitting device so as to irradiate the recording object which relatively moves with respect to the laser emitting device in a direction different from the predetermined direction, with laser beams via the optical fiber array, to heat the recording object and record an image.2. The image recording apparatus according to claim 1 , wherein the predetermined direction is a direction orthogonal to a relative moving direction of the recording object.3. The image ...

IMAGE FORMING APPARATUS FOR SCANNING LIGHT BEAM AT NON-UNIFORM SCAN SPEED AND EXPOSING PHOTOSENSITIVE MEMBER

An image forming apparatus includes: a halftone processing unit configured to perform halftone processing on image data by a dither matrix that includes a plurality of submatrices and decide an exposure region of an image. In at least one of a first dither matrix corresponding to a first section, and a second dither matrix corresponding to a second section adjacent to the first dither matrix in the main scanning direction and corresponding to a second section different from the first section in tone value, at least a size of an exposure region of an image formed by using a first submatrix corresponding to a predetermined tone value in the dither matrix and a size of an exposure region of an image formed by using a second submatrix corresponding to the predetermined tone value are different. 1. An image forming apparatus comprising:a photosensitive member;an irradiation unit configured to form an electrostatic latent image on the photosensitive member by scanning a laser beam at a non-uniform scan speed with respect to a main scanning direction and exposing the photosensitive member;a correction unit configured to generate second image data by performing correction processing for correcting a tone value of a pixel in first image data in accordance with a position in the main scanning direction; anda halftone processing unit configured to perform halftone processing on the second image data by a dither matrix that includes a plurality of submatrices each including a plurality of pixels and decide an exposure region of an image formed by the irradiation unit,wherein in at least one of a first dither matrix corresponding to a first section, and a second dither matrix corresponding to a second section adjacent to the first dither matrix in the main scanning direction and corresponding to a second section different from the first section in tone value, at least a size of an exposure region of an image formed by using a first submatrix corresponding to a predetermined tone ...

IMAGE PROCESSING DEVICE AND NON-TRANSITORY RECORDING MEDIUM

An image processing device includes a reception unit and a generation unit. The reception unit receives an input image signal, and a synchronization signal used to generate an output image signal on a basis of the input image signal. The generation unit generates, in a case in which the reception unit receives an initial synchronization signal of a unit of image reading, a synchronization signal for a subsequent input image signal. The reception unit receives the synchronization signal generated by the generation unit. 1. An image processing device comprising:a reception unit that receives an input image signal, and a synchronization signal used to generate an output image signal on a basis of the input image signal; anda generation unit that generates, in a case in which the reception unit receives an initial synchronization signal of a unit of image reading, a synchronization signal for a subsequent input image signal, whereinthe reception unit receives the synchronization signal generated by the generation unit.2. The image processing device according to claim 1 , whereinthe input image signal is a signal generated by conducting image reading in units of lines, andin a case in which the reception unit receives a synchronization signal of a leading line of a page as the initial synchronization signal, the generation unit generates a synchronization signal for a subsequent input image signal.3. The image processing device according to claim 2 , whereinthe synchronization signal is a signal including a signal pattern, andthe synchronization signal of the leading line is identified on a basis of the signal pattern.4. The image processing device according to claim 3 , whereinin a case in which the reception unit receives an initial synchronization signal including a signal pattern corresponding to a predetermined prescribed pattern, the generation unit generates a synchronization signal for a subsequent input image signal.5. The image processing device according to ...

Image Forming Apparatus That Ensures Reduced Deterioration of Image Quality Caused by Driving of Fixing Pressure Changing Mechanism, Image Forming Method, and Recording Medium

An image forming apparatus includes a fixing unit, an image reading unit, and a control unit. The fixing unit includes a first roller, a second roller, and a displacement mechanism that displaces at least one of the first roller and the second roller to form a nip portion. The image reading unit includes a scanning mechanism that scans by moving a carriage where a light source is mounted. The control unit executes a driving of the scanning mechanism and a driving of the displacement mechanism at different times. 1. An image forming apparatus comprising:a fixing unit that includes a first roller, a second roller, and a displacement mechanism that displaces at least one of the first roller and the second roller to form a nip portion;an image reading unit that includes a scanning mechanism that scans by moving a carriage where a light source is mounted; anda control unit that executes a driving of the scanning mechanism and a driving of the displacement mechanism at different times.2. The image forming apparatus according to claim 1 , wherein the driving of the scanning mechanism includes a movement of the carriage at an image acquisition by the image reading unit claim 1 , and does not include a movement of the carriage at an image non-acquisition.3. The image forming apparatus according to claim 2 , wherein the control unit executes at least a part of the driving of the displacement mechanism before the carriage returns to a preliminarily set initial position after the movement of the carriage at the image acquisition from the initial position completes.4. The image forming apparatus according to claim 3 , wherein:when detecting a copy start instruction during the driving of the displacement mechanism, and if the carriage is in its course to return to the initial position, the control unit starts the driving of the scanning mechanism after the driving of the displacement mechanism stops in response to an arrival at the initial position; andif the carriage is not in ...

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

There is provided an image processing apparatus provided with a printer driver comprising an input interface that accepts a print request, at least one memory device that stores a set of instructions, and at least one processor that executes the set of instructions to detect an orientation of a color change in a gradation included in the print request, determine a rendering method of the gradation based on the detected orientation of the color change, and instruct a printing apparatus to perform printing in accordance with the determined rendering method. 1. An image processing apparatus provided with a printer driver , the apparatus comprising:an input interface that accepts a print request;at least one memory device that stores a set of instructions; and detect an orientation of a color change in a gradation included in the print request;', 'determine a rendering method of the gradation based on the detected orientation of the color change; and', 'instruct a printing apparatus to perform printing in accordance with the determined rendering method., 'at least one processor that executes the set of instructions to2. The image processing apparatus according to claim 1 , wherein the rendering method is image drawing in which drawing is performed using raster representation or diagram drawing in which drawing is performed using vector representation.4. The image processing apparatus according to claim 3 , wherein the print setting includes information for specifying a scanning direction of the printing apparatus and an orientation in which the gradation is to be output onto an output medium.5. The image processing apparatus according to claim 4 , wherein claim 4 , when the gradation is a radial gradation claim 4 , the at least one processor determines the rendering method of the gradation to be the image drawing.6. The image processing apparatus according to claim 4 , wherein claim 4 , when the gradation is a linear gradation and the detected orientation of the color ...

Image reading apparatus, image reading method, and non-transitory computer readable medium

An image is read from a recording medium via first and second optical imaging systems disposed such that respective reading regions partially overlap each other in a principal scanning direction on a reading surface. A sum of distances over which first and second images captured by the first and second optical imaging systems, respectively, are displaced in the principal scanning direction with respect to a reference point included in a region in which the reading regions overlap each other is calculated. First and second distances, over which the first and second images are displaced in the principal scanning direction, respectively, are calculated using the sum and first and second reading angles at which the first and second optical imaging systems, respectively, read the reference point. Positions of the first image and the second image in the principal scanning direction are corrected using the first distance and the second distance, respectively.

Fully Automatic Rapid Microscope Slide Scanner

Apparatus for and method of fully automatic rapid scanning and digitizing of an entire microscope sample, or a substantially large portion of a microscope sample, using a linear array detector synchronized with a positioning stage that is part of a computer controlled microscope slide scanner. The invention provides a method for composing the image strips obtained from successive scans of the sample into a single contiguous digital image. The invention also provides a method for statically displaying sub-regions of this large digital image at different magnifications, together with a reduced magnification macro-image of the entire sample. The invention further provides a method for dynamically displaying, with or without operator interaction, portions of the contiguous digital image. In one preferred embodiment of the invention, all elements of the scanner are part of a single-enclosure that has a primary connection to the Internet or to a local intranet. In this embodiment, the preferred sample type is a microscope slide and the illumination and imaging optics are consistent with transmission mode optics optimized for diffraction-limited digital imaging.

Imagesetter

Beam light scanning apparatus and image forming apparatus

Patent JPS6118727B2

Imaging system and method for printed circuit artwork and the like

Imaging system and method suitable for producing artwork masters for use in the manufacture of printed circuit boards. A beam of coherent radiation is modulated in accordance with data from a source defining the image to be produced, and the modulated beam is scanned across an output medium to form the desired image. A reference signal is generated in accordance with the position of the beam on the output medium, and this signal is shifted forward in phase to compensate for any delay between the generation of the reference signal and the arrival of the modulated beam at the output medium.

Method and apparatus for the production of a structure by focused laser radiation on a photosensitively coated substrate

A system for writing geometric structures on a photosensitive substrate including a modulated laser beam source, a focusing lens, a deflector for producing a scanning action between the light source and the lens, and a device for mechanically moving the surface relative to the laser beam. Compressed data for use in writing the geometric structures is read out of a memory into a data delivery circuit such that the data is formatted to have both beam power and position information. A modulator logic circuit operates to call up the data from the data delivery circuit, form a modulation drive signal based on the power information, and delay the modulation drive signal based the position data. The modulator logic circuit thus operates to vary the modulation drive signal to begin or end exposure along the scan lines with greater resolution or pixel density by at least a factor of four more than the resolution or spacing density between adjacent scan lines. The scan lines are arranged within stripes, and adjacent stripes preferably are made to overlap such that the stripes are blended in the overlap according to a predetermined stepwise changing function.

Optical scanning device having jitter amount measuring means

Internal drum scophony raster recording device

An optical recording and data processing system for exposing an image on to a flexible, light sensitive medium, which includes a medium holder having an inner cylindrical wall portion against which is held said medium, and a light source having an approximately rectangular emitting aperture, with a short aperture axis and a long aperture axis, operative to emit a beam of light having a rectangular cross section with a long axis corresponding to the long aperture axis and a short axis corresponding to the short aperture axis. An optical modulator is aligned with the light source so as to intercept light from the beam of light and produce a spatial modulation pattern across the long axis of the beam of light. A pattern shifter for shifting the spatial modulation pattern across the length of the long axis at a constant rate is provided as is a pattern rotator for rotating the spatial modulation pattern at a rate equal to the rate of shifting of the spatial modulation pattern. A scanner for scanning the beam of light onto and across the circumference of the inner cylindrical wall portion and a driver for advancing the scanner mechanism, after scanning a row, to an adjacent row to repeat the scanning are both provided. The relative phase angle between rotation of the spatial modulation pattern and scanning of the pattern is maintained such that the direction of movement of the projected image of said shifting is parallel to the scan motion, but opposite in direction. An optical system is provided to project the modulated beam of light and focus it to produce an image of the shifting modulation pattern at the recording medium so that the rate of shifting motion cancels the scan motion.

주사광학 장치

내용 없음.

同期信号発生回路

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Image forming apparatus

Optical scanner

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical cascade scanning system for laser printer

The optical cascade scanning system uses two separate laser scanning systems (20A,20B) with respective laser scanning beams. This arrangement provides two scanning lines at the scanned surface, combined to provide a common scanning line. Each scanning system is provided by a non-telecentric system, with the incidence angle of the scanning beam, at the scanned surface, varied with position adjustment of the scanning point. The incidence angle is greater at the contact point of the scanning lines than at each outer end of the common scanning line.

Video information input device

Laser scanning device and scanning lens

Photodetector

반사빔 경로를 단순화시키는 광검출기에 관한 것으로, 광학계의 부품수를 감소시키고, 레이저 주사장치를 저렴하게 제조하며, 또한 작업공정을 단축하여 제조공정시의 불량율을 저감하기 위해, 레이저빔 프린터용 레이저 주사장치에 사용하는 광검출기에 있어서, 레이저빔을 방출하는 광원수단, 광원수단으로부터의 레이저빔의 형상을 한 방향으로 집속하는 렌즈계, 렌즈계에 의해 집속된 레이저빔을 그의 회전방향과 다른 방향으로 편향 및 반사시키는 회전다면경과 회전다면경으로부터 반사된 광을 검출하는 광검출수단을 마련한다. 이러한 구성으로 하는 것에 의해, 레이저 주사장치의 재료비절감과 작업공정의 단축, 광학부품수의 감소로 인한 제조공정시의 불량율을 감소시킬 수 있다.

Laser scanning unit module

광주사유니트 모듈이 개시된다. 광주사유니트 모듈은 광을 주사할수 있도록 된 하나 이상의 광주사유니트와, 광주사유니트들이 설치되는 베이스 플레이트 및 광주사유니트의 주사특성을 평가하는 평가장치로부터 측정된 것으로서, 광주사유니트 각각의 주사제어를 위해 필요한 데이터가 기록되어 베이스 플레이트에 설치되어 있는 메모리소자를 구비한다. 이러한 광주사유니트 모듈에 의하면 인쇄기에 장착된 이후, 시험인쇄 과정없이도 정상작인 인쇄작업을 위한 광주사제어가 메모리소자로부터 제공되는 데이터에 의해 가능하고, 광주사유니트 교체시에도 요구되는 특성에 맞는 광주사유니트를 메모리의 특성정보로부터 쉽게 선택할 수 있도록 함으로써 그 사용이 용이하다. Gwangju unit module is disclosed. The Gwangju Unit Module is measured from one or more Gwangju Units capable of scanning light, the base plate on which the Gwangju Units are installed, and an evaluation device for evaluating the scanning characteristics of the Gwangju Units. It is provided with a memory device that is necessary data for the recording is installed on the base plate. According to the optical fiber unit module, the optical fiber control can be performed by the data provided from the memory device for printing a normal work without a test printing process after being mounted on a printing machine, and the optical fiber that meets the characteristics required when replacing the optical fiber unit It is easy to use the private unit by selecting it easily from the characteristic information of the memory.

Recording material moving apparatus and image forming apparatus

Selecting device

Lattice signal generating system

Patent DE3641038C2

Device for discharging a uniformly charged photoconductive recording drum

Laser printer

Image forming apparatus

position control apparatus, scanner and image forming device having the same

프린트 헤드, 스캐닝 모듈 등과 같은 이동체 또는 회동체의 속도와 위치를 제어하는 위치제어장치, 및 그것을 구비하는 스캐너와 화상형성장치가 제공된다. 위치제어장치는 모터에 의해 구동되는 회동체 또는 이동체의 속도와 위치를 제어하며, 색상이 표시된 색상챠트를 구비하는 엔코딩 부재, 색상차트에 표시된 색상을 검출하는 센싱부, 및 센싱부에서 검출된 색상을 토대로 회동체 또는 이동체의 속도와 위치를 판단하고, 모터의 구동을 제어하는 제어부를 포함하는 것을 특징으로 한다. 본 발명에 따르면, 회동체 또는 이동체의 속도와 위치를 센싱부에 의해 검출되는 색상의 색상값에 의해 제어하므로, 회동체 또는 이동체의 속도와 위치를, 칼라를 검출하는 센싱부의 해상도 만큼 정밀하게 제어할 수 있을 뿐 아니라, 회동체 또는 이동체가 슬립을 발생하더라도 오차없이 정확하게 제어할 수 있다. A position control apparatus for controlling the speed and position of a moving object or a rotating body such as a print head, a scanning module, and the like, and a scanner and an image forming apparatus having the same. The position control device controls the speed and position of the rotating body or the moving body driven by the motor, and includes an encoding member having a color chart with a color, a sensing unit for detecting a color displayed on the color chart, and a color detected by the sensing unit. It is characterized in that it comprises a control unit for determining the speed and position of the rotating body or the moving body, and controls the driving of the motor. According to the present invention, since the speed and position of the rotating body or the moving body are controlled by the color value of the color detected by the sensing unit, the speed and position of the rotating body or the moving body are precisely controlled by the resolution of the sensing unit detecting the color. In addition, even if the rotating body or the moving body slips, it can be accurately controlled without error. 스캐닝 모듈, 프린트 헤드, 캐리지, 급지롤러, 위치, 속도, 제어 Scanning module, print head, carriage, feed rollers, position, speed, control

Output Control Method of Image Forming Device and Semiconductor Laser

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Optical detecting apparatus

本发明提供一种用于激光打印机的激光扫描装置上，使反射光束的通路简化的光检测器，它能减少光学系统的零件，降低激光扫描装置的制造成本，缩短制造工序和降低废品率。这种光检测器具有：发射激光束的光源装置；使光源装置所发射的激光束聚光用的透镜系统；将由透镜系统聚光后的激光束偏转反射到与转动方向不同的方向上去的转动的多面棱镜；以及检测反射出来的光的光检测装置。

Image forming apparatus

Light beam scanning device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Optical beam scanning device

Scanning type optical printer

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Laser printer

Optical writing apparatus and image forming apparatus

Laser scanning system employed in printer

인쇄기의 광주사시스템을 개시한다. 본 발명에 따른 인쇄기의 광주사시스템은 순환운동하는 감광벨트의 주행방향에 수직한 주주사방향으로 광을 주사하는 광주사유니트와, 감광벨트상의 중앙부분에 설정된 화상정보 기입영역과 감광벨트의 가장자리 사이 영역에 일정폭으로 감광벨트의 주행방향을 따라 직선상으로 형성된 반사띠와, 광주사유니트에서 출사되는 광중 반사띠에서 반사된 광을 수광하여 그에 대응되는 전기적 신호를 광주사유니트의 주사동기신호로 출력하는 광검출기 및 광검출기로부터의 주사동기신호를 이용하여 광주사유니트로부터 이미지정보에 대응하는 광이 화상정보 기입영역에 출사될 수 있도록 광주사유니트를 제어하는 시스템제어부를 구비한다. 이러한 인쇄기의 광주사시스템에 의하면 감광벨트 가장자리라인의 결함 및 굴곡에 영향을 받지 않고 화상정보 기록영역내에서의 주사선단을 일치시킬 수 있다. The optical scanning system of the printing press is started. The optical scanning system of the printing press according to the present invention comprises a optical scanning unit which scans light in a main scanning direction perpendicular to the traveling direction of a circularly moving photosensitive belt, and between an image information writing area set at a central portion on the photosensitive belt and an edge of the photosensitive belt. Reflected band formed in a straight line along the driving direction of the photosensitive belt at a certain width in the area, and the light reflected from the reflected band out of the light emitted from the optical fiber unit is received and the corresponding electrical signal is converted into the scanning synchronization signal of the optical fiber unit. And a system controller for controlling the light scanning unit so that light corresponding to the image information from the light scanning unit can be emitted to the image information writing area by using the output photodetector and the scanning synchronous signal from the photodetector. According to the optical scanning system of such a printer, the scanning tip in the image information recording area can be matched without being affected by defects and curvature of the photosensitive belt edge line.

Fully automatic rapid microscope slide scanner

Apparatus for and method of fully automatic rapid scanning and digitizing of an entire microscope sample, or a substantially large portion of a microscope sample, using a linear array detector synchronized with a positioning stage that is part of a computer controlled microscope slide scanner. The invention provides a method for composing the image strips obtained from successive scans of the sample into a single contiguous digital image. The invention also provides a method for statically displaying sub-regions of this large digital image at different magnifications, together with a reduced magnification macro-image of the entire sample. The invention further provides a method for dynamically displaying, with or without operator interaction, portions of the contiguous digital image. In one preferred embodiment of the invention, all elements of the scanner are part of a single-enclosure that has a primary connection to the Internet or to a local intranet. In this embodiment, the preferred sample type is a microscope slide and the illumination and imaging optics are consistent with transmission mode optics optimized for diffraction-limited digital imaging.

Timeline generator

FIELD: physics. SUBSTANCE: timeline generator includes: a timeline receiving unit, an internal quantum sequence generator, a divider, a timeline transmission unit, a guard interval shaper, a time selector, a switchable delay line unit, a unit of comparators, generator of linearly changing voltage. EFFECT: improving the accuracy of the timeline synchronization. 5 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 637 872 C1 (51) МПК H03L 7/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2017103954, 07.02.2017 (24) Дата начала отсчета срока действия патента: 07.02.2017 07.12.2017 Приоритет(ы): (22) Дата подачи заявки: 07.02.2017 R U (73) Патентообладатель(и): Федеральное государственное унитарное предприятие "Центральный научно-исследовательский институт связи" (ФГУП ЦНИИС) (RU) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: RU 2381538 C1, 10.02.2010. RU (45) Опубликовано: 07.12.2017 Бюл. № 34 2 6 3 7 8 7 2 R U Стр.: 1 последовательности, делитель, блок передачи шкалы времени, формирователь защитного интервала, временной селектор, блок переключаемых линий задержки, блок компараторов, генератор линейноизменяющегося напряжения. 5 ил., 1 табл. C 1 (54) ГЕНЕРАТОР ШКАЛЫ ВРЕМЕНИ (57) Реферат: Генератор шкалы времени относится к устройствам синхронизации сигналов по частоте, сдвигу фазы и шкале времени. Техническим результатом является повышение точности синхронизации шкалы времени. Генератор шкалы времени содержит: блок приема шкалы времени, внутренний генератор квантовой 163513 U1, 20.07.2016. RU 2439643 C1, 10.01.2012. EP 1447967 A2, 06.02.2004. 2 6 3 7 8 7 2 Адрес для переписки: 111141, Москва, 1-й пр-д Перова поля, 8, ФГУП ЦНИИС C 1 (72) Автор(ы): Мазуренко Дмитрий Константинович (RU) C 1 C 1 2 6 3 7 8 7 2 2 6 3 7 8 7 2 R U R U Стр.: 2 RUSSIAN FEDERATION (19) RU (11) (13) 2 637 872 C1 (51) Int. Cl. H03L 7/00 (2006.01) FEDERAL SERVICE FOR INTELLECTUAL PROPERTY (12) ABSTRACT ...

Vertical alignment correcting apparatus and method

본 발명은 수직 얼라인먼트(Alignment) 보정 장치 및 방법에 관한 것으로, 시스템 메모리에 저장된 수직 얼라인먼트(Alignment) 보정 프로그램을 리드(Read)하여 수직 기준선을 이용 원고에 기록된 정보를 양방향으로 스캐닝시 스캐닝 거리를 CR 모터의 회전수에 따라 카운트(Count)하여 감지하고 감지된 결과에 의해 스캐닝 거리에 편차가 발생되면 발생된 스캐닝 거리를 보정하는 제어 신호를 출력하는 CPU와, 상기 CPU에서 발생된 스캐닝 거리를 보정하는 프로그램을 실행하여 출력되는 보정에 따른 제어 신호를 인가받아 처리하여 스캐닝 거리를 조정하는 제어신호를 출력하는 프린트 드라이버(Driver)와, 상기 프린트 드라이버(Driver)로부터 출력되는 제어신호에 따라 회전 스텝수가 조절되는 CR 모터로 구성하여, 이동 거리의 편차를 보상하여 수직 얼라인먼트(Alignment)를 맞추기 때문에 화질 저하를 가져오지 않으면서 양방향 스캐닝을 할 수 있기 때문에 스캐닝 속도를 향상시킬 수 있고, 또한, 항상 양방향 스캐닝을 하기 전에 자동으로 보정하여 수직 얼라인먼트(Alignment)를 유지하므로 스캐닝 작업시 최적의 상태를 유지하는 효과가 있다. The present invention relates to a device and method for vertical alignment correction, which reads a vertical alignment correction program stored in a system memory and scans information recorded in an original in both directions using a vertical reference line. A CPU that counts and detects according to the number of rotations of the CR motor, and outputs a control signal for correcting the scanning distance generated when a deviation occurs in the scanning distance based on the detected result, and corrects the scanning distance generated by the CPU A print driver for outputting a control signal for adjusting a scanning distance by receiving and processing a control signal according to a correction outputted by executing a program, and a number of rotation steps according to the control signal output from the print driver It consists of a CR motor that is controlled and compensates for the deviation of the moving distance so that the vertical alignment (Alignm) ent), bi-directional scanning can be performed without deteriorating the image quality, thereby improving scanning speed. Also, automatic scanning is always performed before bidirectional scanning to maintain vertical alignment. It is effective to maintain the optimal state.

Light beam scanning device

Method and apparatus for transverse image registration on photoreceptive belts

A method and apparatus for transverse registration of image exposures on photoreceptive belts subject to lateral deviation from linear travel in which targets, corresponding in location to the image areas to be exposed, are used for the detection of lateral belt displacement and to control the transverse location of exposure scan. The targets are of a pattern defining a reference line and a line inclined with respect to the direction of belt travel so that the duration of time between passage of the target lines with respect to a spacially fixed sensing axis will vary with lateral displacement of the belt. The targets may assume a variety of specific patterns and the invention is applicable to single and multi-pass image exposure systems as well as to both modulated laser and light emitting diode types of exposure devices.