Automatic manuscript-transporting device

26-02-2003 дата публикации
Номер:
CN0001102123C
Принадлежит: Ricoh Co Ltd
Контакты:
Номер заявки: 36-60-9811
Дата заявки: 15-07-1998

[1]

The invention relates to a copier, scanner, fax device, and the like, used for making the original manuscript is fixed relative to the Image reading device of the mobile automatic manuscript conveying device.

[2]

Figure 9 is side view , grade 1 is a shell main body, 2 is the platen glass, 3 is the front axle, 4 is of closely map that is provided with an automatic document conveying device of an Image reading device such as sensor a, 5 is the pressure plate, 6 is a standard white board, 7 is the automatic document conveying device (automatic   document feeder, hereinafter referred to as ADF device), 8 is a, 9 is pressing plate, 10 is a paper feed roller, 11 is descending, 12 is upstreamly, 13 is to position the pressing roller, 14 a positioning and pressurizing roller is, 15 is produced, 16 paper ejection roller is, 17 is a standard white board, 18 is loading the original manuscript, 19 is a spring, 20 is the conveyance path, 21 is the paper ejection path, 22 is connected with the tray, 23 is a spring.

[3]

The body shell 1 are fixed on the original manuscript table glass 2, in the body shell 1 is provided with the original manuscript table glass 2 parallel front axle 3. The closely Image sensor 4 move freely and resting freely in any position of the mounted on the front axle 3 on, the above-mentioned joint Image sensor 4 close to the original manuscript table glass 2 below, and to the glass and is provided with.

[4]

The body shell 1 can be freely opened and closed on the upper part of is provided with a pressure plate 5, when the original manuscript table glass 2 is uploaded on the original manuscript (finger opened the book the open page as read the original manuscript), when the original manuscript paper, the above-mentioned pressure plate 5 covers the above-mentioned loaded original manuscript. The pressure plate 5 with the fulcrum shaft 5a as the center of the pressure plate can be lifted before the structure of the body. Furthermore, on the platen glass 2 is placed on the original manuscript read brightness correction for the standard white board 6, the pressure plate 5 is provided with a side of the ADF device 7. Here, manuscript table glass 2 of the ADF device 7 extend to the end of the side is connected with the tray 22 to differentiating the vicinity of 15 in front position. Convenient in order to explain, the manuscript table glass 2 in the two ends of the ADF device 7 as one end of one side, the pressure plate 5 as the other end of the one side.

[5]

ADF device 7 comprises a pickup roller 8, the pressure plate 9, a feeding roller 10, separation pad 11, positioning roller 12, positioning and pressurizing roller 13, differentiating 15, ejection pressure roller 16, brightness correction using standard white board 17, and the like. Pressure plate 5 forming the upper part of the loading the original manuscript 18, is used for loading device to read the Image by the ADF 7 automatic conveyance of the original manuscript paper.

[6]

ADF device 7 can be divided into the upper structure 7a and the lower structure 7b, the upper structure 7a is provided with a pressing plate 9, separation pad 11, positioning roller 12, standard white board 17 and switchback transportation 15, and the like, the lower structure 7b is provided with a pickup roller 8, a feeding roller 10 and the positioning and pressurizing roller 14 fixed bearing positioning and pressurizing roller 13, and the like. The upper structure 7a is arranged to be able to roll shaft 15a as a rotary pivot freely above the axial opening. And, when the upper structure 7a relatively lower structure 7b is in a closed state, a 8 and pressing plate 9, a feeding roller 10 and the separation pad 11, positioning roller 12 and positioning and pressurizing roller 13, differentiating 15 and ejection pressure roller 16 respectively connected with.

[7]

ADF device 7 of a conveyance path is formed within 20, the delivery of the Image reading position, the Image sensor for the joint 4 read the Image. The transportation path 20 is formed from the original manuscript table glass 2 towards one end of the median of the transporting original manuscript, in the conveyance path 20 is arranged around the feeding roller 10, separation pad 11, positioning roller 12, and the like.

[8]

Manuscript table glass 2 with one end of the ADF device 7 formed between the discharge path 21, is used for discharging the original to read the Image has been completed, the paper discharging path 21 is formed with the through the conveyance path 20 is transported to the Image reading position in the same direction as the transporting direction of the original manuscript, the body housing 1 is installed on a side part of the paper tray 22. Switchback transportation 15 with the roller shaft 15a is provided with a one-way overrunning clutch between (not shown), paper ejection roller 16 with cheng Chao produced is 15 coupled to freely move in the direction, and the spring 19 forces and differentiating that of 15 the elastic is connected with the outer peripheral surface.

[9]

In the standard white board 17 is arranged on the two ends of the longitudinal direction of the lug, is used for to ensure that the original manuscript in the manuscript table glass 2 by moving between the gap of a predetermined size. Standard white board 17 is provided with a paper guide member, is used for the original manuscript have to move into the standard white board 17 with the manuscript table glass 2 in the gap between the. Furthermore, standard white board 17 is composed of a spring 23 mounted in the upper structure 7a side, closing the upper structure 7a is, through the spring 23 forces the pointed out, the highlight portion of the original support glass 2 on.

[10]

In this kind of structure, when reading the original Image in the placed state, the pressure plate 5, download the compressed original manuscript table glass face 2 the upper, subsequently closing plate 5 after the coverage on an original manuscript, according to the is arranged on the operation panel (not shown) of the Image reading starting on, Image sensor contact 4 mobile corresponding range according to the original size, read the original manuscript Image.

[11]

ADF device and 7 when the read Image, an original placed on the original manuscript loading paper 18 after on, according to the Image reading starting, the closely Image sensor 4 in the ADF device 7 with a standard white board 17 to the position of the standby, by driving the pickup roller 8, a feeding roller 10, the original manuscript is conveyed in the conveying path. In the conveyance path 20 through the original in the original manuscript table glass 2 and the standard white board 17 through the gap between the joint part when the Image sensor 4 to read the Image, by the ADF device 7 to be connected with the portion of the Image sensor 4 is not changed the original manuscript reading an Image in the transporting direction of the paper discharge path 21 is transported in, through the switchback transportation 15 and ejection pressure roller 16 is connected to a paper tray between 22 on.

[12]

As such can be cited the prior art special Kaiping 5-155459 of recorded in the original manuscript reading apparatus. The device is composed of a shaft supporting part and paper guide member, preventing the original manuscript involved in transporting roller caused by the blocking, and does not need to increase such as paper guide element of a new part.

[13]

As shown in Figure 9, the Image reading apparatus provided with a paper document read mode, the read mode, the original manuscript and two kinds of Image reading function, paper document read mode, the picture is fixed closely 4 position, through the make the original manuscript mobile read the original manuscript, book manuscript reading mode of the original manuscript is fixed, the Image sensor through the joint 4 mobile read the original manuscript, the ADF device 7 that the side of the pressure plate 5, the original mounting position and the height difference of the reading position, as shown in Figure 10, the positioning roller 12 and positioning and pressurizing roller 13 formed by pressurizing each other relative to the tangent of the manuscript table glass 2 close to vertical angle, to the delivery of an original on the platen glass 2 to flex on, easy to cause delivery of bad.

[14]

In order to solve the above-mentioned adverse conditions, it is necessary to reduce the original manuscript relative manuscript table glass 2 into the angle of the surface, as close as possible to the horizontal. Specifically, compared to Figure 10 to the position shown in the positioning and pressurizing roller 13 to reduce downward, or the positioning roller 12 to lift above.

[15]

The former situation, the paper book manuscript read mode, the read mode, the read conditions of the original manuscript, manuscript table glass 2 extends to the paper original to a reading position in the read mode, therefore, the positioning and pressurizing roller 13 to reduce downward will be restricted. Furthermore, if positioning and pressurizing roller 13 is reduced to the manuscript table glass 2 phase contact, the rotary load is applied to the positioning and pressurizing roller 13 is, therefore, it is necessary to make the two left.

[16]

The latter occasion, as shown in Figure 11, the positioning roller 12 and the positioning and pressurizing roller 13 and the point of original manuscript table glass 2 A space exists between, may enter the space of the original manuscript A squirm the front end of the read will be caused by bad. Furthermore, fast positioning roller 12 and positioning and pressurizing roller 13 is provided with a contact part of the original manuscript sensor, the front end of the original manuscript if the peristaltic, through the original manuscript from the sensor to the reading position for a period of time will be changes, it cannot be at the front end of the original to the reading position according to a predetermined time. In order to solve this kind of bad conditions, must be of a conveyance path of the original manuscript document guide member is up and down, as mentioned above, extending the platen glass, cannot be provided with the original guide member.

[17]

Therefore, through changing the upstreamly 12 or positioning and pressurizing roller 13 to reduce the original manuscript the position of the angle is very difficult.

[18]

This invention was made in view of the above-mentioned prior art and the problems of, the aim of the invention is to, provide a manuscript can be reduced relative to the angle of the original manuscript table glass, to ensure that smooth conveyance path automatic manuscript conveying device.

[19]

In order to realize the above-mentioned purpose, the invention provides an automatic document conveying device, is provided with: the of the Image reading apparatus to the configuration of the platen glass, is arranged on the than the above-mentioned original manuscript table glass high position, to the above-mentioned document table glass fitted conveying the original manuscript, and the above-mentioned transporting roller docking of the pressurizing roller; characterized in that the original manuscript is provided with a guide member of the guide, from the above-mentioned conveying rollers and the roller of the clamping portion between the front end of the original manuscript relative to the document table glass is connected by oblique direction. Because of the above-mentioned structure, the front end of the original manuscript relative to the document table glass is connected to an oblique direction, on the front end of the original on the platen glass slide, the front end of the original manuscript is not easy to flex.

[20]

According to this invention automatic manuscript conveying device, its is also characterized in that, in the above-mentioned pressure roller part slot circumferential direction is arranged, the above-mentioned guide part is disposed in the above-mentioned in the slot. Because of the above-mentioned structure, the guide member into the roller in a part of, the space can be saved.

[21]

According to this invention automatic manuscript conveying device, is also characterized in that the same, the above-mentioned pressure roller in the above-mentioned slot part is an integral structure. When the pressing roller by slot segmentation state, because the electrolytic partial discharge chilled, slidability of the shaft, the difference between the shaft and the deflection or the like, is easy to produce the difference of the speed difference and the linear speed; according to the above-mentioned structure, the roller into an integrative structure, can prevent the occurrence of line-rate difference, an original crimp can be effectively prevented.

[22]

According to this invention automatic manuscript conveying device, is also characterized in that the same, the above-mentioned guide part of the guide surface formed in a curve shape. Because of the above-mentioned structure, the front end of the original manuscript can be relative to the manuscript table glass surface so as to close out the horizontal direction.

[23]

According to this invention automatic manuscript conveying device, its is also characterized in that, in the above-mentioned guide member is provided with a contact part, the contact part in the above-mentioned roller the two sides of the central axis of the position of the contact with the above-mentioned original manuscript table glass. According to the above-mentioned structure, even if the roller is due to the anti-rotation guide element is the direction of the positive and negative torque is applied, the center axis of the pressing roller for the two side positions of the contact part is rotating the guide member, so as to make the guide element in a stable state.

[24]

Effect of the present invention are described below.

[25]

As mentioned above, in accordance with the present invention, by positioning the front end of the original manuscript the roller transports sent through the guide member such that the surface of the document table glass is connected with the opposite angle is close to horizontal, transporting original manuscript can be smoothed, and part of the positioning roller is provided with a guide member, the space can be saved.

[26]

With photos are as follows:

[27]

Figure 1 is a strabismus Figure of the invention section 1 of the embodiment of the automatic manuscript-transporting device;

[28]

Figure 2 is cross-sectional view of Figure 1;

[29]

Figure 3 is of side view the Figure 1 structure is set up in the device body and the state of the conveyance path of the original;

[30]

Figure 4 is a main part side view of the invention paragraph 2 embodiment of the automatic manuscript-transporting device;

[31]

Figure 5 is the guide component strabismus Figure of the invention section 3 of the embodiment of in automatic manuscript-transporting device;

[32]

Figure 6 is a main part side view of the invention paragraph 3 embodiment of the automatic manuscript-transporting device;

[33]

Figure 7 is cross-sectional view of said divided positioning the pressure roller;

[34]

Figure 8 is cross-sectional view of said integrated positioning the pressure roller;

[35]

Figure 9 is side view of said automatic manuscript-transporting device to form a an example;

[36]

Figure 10 Figure 9 in the vicinity of its map original manuscript conveying path;

[37]

Figure 11 the original manuscript is to enhance its transport the state when the position of that Figure.

[38]

With reference to the attached drawing, the embodiment of the invention.

[39]

In the described below, to the Figure 9, 10 embodiment the prior art shown in the part of the same components having the same function or the same as the part of the symbol marked, to omit a detailed description.

[40]

Figure 1 is side view , Figure 1-Figure of the invention section 1 automatic manuscript of the embodiment of the main part of the conveying device for a strabismus Figure, Figure 2 is Figure 1 a cross-sectional view, Figure 3 shows the Figure 1 structure is set up in the device body and the state of the transport path of the original manuscript 3 relates to the invention section 1 embodiment. Label 30 expresses the original guide platen glass 2 side of the guide member. Section 1 of the embodiment of the automatic manuscript-transporting device of fig. 9 in the illustrated device the positioning and pressurizing roller 13 and the adjacent structure is set for the Figure 1 structure shown in.

[41]

Guide member 30 a forming processing by molding, from the bottom 30a and forming at the bottom 30a the side of the two side 30b, 30b form, from the front U-shaped member is. Side 30b formed on the notched portion 30c and inclined portion 30d, the inclined part 30d from the above-mentioned notch 30c down sharply inclined to the bottom of the side 30a and the side part 30b the root end. In this embodiment, inclined portion 30d is set to the angle of 45 °-60 ° left and right.

[42]

As shown in Figure 1, 2 is shown, a positioning and pressurizing roller 13 is located in the central rolling 13a and disposed on both sides of the rolling thereof 13b, 13b form a total of three sections of the rolling, rolling 13a with rolling 13b, 13b is provided with a gap between 13c, 13c, the section part is fixed on the positioning and pressurizing roller shaft 14 is. Here, positioning and pressurizing roller 13 is through the plastic and other rigid body part of a positioning and pressurizing roll in the metal cladding 14 on form, in Figure 3 in, positioning roller 12 is by coating elastic material such as a rubber in the metal back formed on the rotating shaft.

[43]

The side 30b, 30b is inserted into the positioning and pressurizing roller 13 gap of 13c, 13c part, the notch 30c, 30c of the U-shaped part and the positioning and pressurizing roller shaft 14 is connected, the installation guide member 30, the positioning and pressurizing roller 13 is mounted to the device main body. At this time, the bottom 30a of the manuscript table glass 2 is connected with the, inclined portion 30d is disposed in the positioning roller 12 and the positioning and pressurizing roller 13 below the clamping part.

[44]

When reading the original, as shown in Figure 3, the positioning roller 12 in a clockwise direction rotation, a positioning and pressurizing roller 13 rotating counter clockwise, transporting original manuscript, through the cork 12 and the inclining part of the original manuscript 30d is connected, through the inclined portion 30d of the guiding, op to the manuscript table glass 2 side.

[45]

Because of the above-mentioned structure, the positioning roller 12 to the front end of the original manuscript through the guide member 30 relative to the manuscript table glass 2 the angle of the surface is close to level, the original manuscript can smoothly conveyed to the standard white board 17 side, and the positioning and pressurizing roller 13 is provided with a guide part of the part 30, the space can be saved. Furthermore, because the guide unit 30 can be a forming processing by molding, therefore, can reduce the cost.

[46]

Figure 4 is a main part side view , and Figure 1-Figure of the invention paragraph 2 embodiment of the automatic manuscript-transporting device 3 is shown in section 1 is the same as the embodiment of a part or parts having the same function the same as parts of the symbols marked, to omit a detailed description.

[47]

Section 2 section embodiment to 1 embodiment of the guiding member 30 inclined part 30d formed in a curve shape.

[48]

Through this kind of structure, than the sloped section 30d is a straight linear occasions which can ensure smooth conveyance path.

[49]

Figure 5 is a main part side view of the invention paragraph 3 embodiment of the automatic original manuscript conveyer guide component strabismus Figure, Figure 6 is a section of this invention 3 embodiment of the automatic manuscript-transporting device, 30e for the bottom 30a of the manuscript table glass 2 the top end part of the opposite surfaces, is connected with the of the original manuscript table glass, 30f is set in the guide member 30 side 30b, 30b of the projection, when the positioning and pressurizing roller 13 is mounted to the device on the body, projections 30f and 30e with the manuscript table glass 2 are connected. The muzzle word J 30c is located in the projection 30e and 30f above between. With the map and 4 shown in section 2 is the same as the embodiment of a part or parts having the same function the same as parts of the symbols marked, to omit a detailed description.

[50]

Because of the above-mentioned structure, a positioning and pressurizing roller 13 during rotation in the anticlockwise direction, because of suddenly 30e with the manuscript table glass 2 is connected with the, guide member 30 is rotating, the direction of clockwise if toward , projection 30f, 30f are respectively connected with the manuscript table glass 2 is connected with the, guide member 30 is rotating. Therefore, the guide member 30 kept in a stable state, can be more stably transporting original manuscript.

[51]

Furthermore, if the increased guide member 30 with the manuscript table glass 2 contact area, will result in high manufacturing cost, this is because in order to prevent the guide member 30 rock, high requirement for the reason of the flatness of the contact surface. In section 3 in the embodiment device, can make the guide member and the manuscript table glass 2 becomes small the contact area of the, therefore, as long as the control is good from the notch 30c to a front and a rear projection 30e, 30f the distance of the row, the guide member can be produced at low cost 30.

[52]

The above described embodiment of this invention, but the invention is not limited to the above-mentioned structure, for example, in the above-mentioned embodiment, as shown in Figure 7, a positioning and pressurizing roller 13 is divided, rolling is composed of three sections 13a, 13b, 13b form, but can also be as shown in Figure 8, in a positioning and pressurizing roller 13 forming the two grooves 31, 31 become integrated. This divided compared with the above-mentioned structure, the wire speed difference is not easy to produce rolling, can prevent the original manuscript the crimp. In Figure 8 in the structure shown in the, positioning and pressurizing roller 13 with the guide parts of 30 the slot 31 slip, because the positioning and pressurizing roller 13 to form a rigid plastic or the like, and the guide member 30 will not cause slip of the positioning and pressurizing roller 13 deformation, will not bring the rotary load of more than necessary.



[53]

A sheet guide in an image reading apparatus guides a sheet fed from a pair of rollers to a scanning point on a contact glass includes a pair of notched portions for bearing forces applied by at least one of the rollers, a sheet bearing portion for guiding the sheet fed by the rollers, wherein the image bearing portion guides the sheet fed out from the rollers to lower an angle incidence which the sheet forms with the contact glass. The sheet bearing edge is positioned toward a lower position of a nip between the rollers and changes the angle of incidence to become closer to horizontal with respect to the contact glass, than if the sheet were unguided.



1, an automatic original document conveying device, is provided with: the of the Image reading apparatus to the configuration of the platen glass, is arranged on the than the above-mentioned original manuscript table glass high position, to the above-mentioned document table glass fitted conveying the original manuscript, and the above-mentioned transporting roller docking of the pressurizing roller; characterized in that the original manuscript is provided with a guide member of the guide, from the above-mentioned conveying rollers and the roller of the clamping portion between the front end of the original manuscript relative to the document table glass is connected by oblique direction.

Wherein the above-mentioned pressure roller part the slot circumferential direction is arranged, the above-mentioned guide part is disposed in the above-mentioned in the slot.

2, the automatic manuscript-transporting device according to Claim 1, characterized in that the above-mentioned pressure roller in the above-mentioned slot part is an integral structure.

3, said in the automatic manuscript-transporting device according to Claim 1, characterized in that the above-mentioned guide part of the guide surface formed in a curve shape.

4, the automatic manuscript-transporting device according to Claim 1, characterized in that in the above-mentioned guide member is provided with a contact part, the contact part in the above-mentioned roller the two sides of the central axis of the position of the contact with the above-mentioned original manuscript table glass.