Inking system for flexographic printing

A flexographic printing system comprising a print module including a plate cylinder on which is mounted a flexographic printing plate, an impression cylinder, an ink pan containing an ink, and an anilox roller for transferring the ink to the flexographic printing plate. A fountain roller mounted to the ink pan is at least partially immersed in the ink in the ink pan and transfers the ink to the anilox roller. A doctor blade mounted to the ink pan and is on a side of the anilox roller proximate to the impression cylinder removes excess amounts of the ink from the patterned surface of the first anilox roller before the ink is transferred to the flexographic printing plate.

Electroless plating system including bubble guide

A roll-to-roll electroless plating system, including a plating tank containing plating solution, and a web advance system for advancing a web of media along a web-transport path that passes through the plating tank. One or more fluid guides are positioned within the plating tank to redirect plating fluid containing gas bubbles introduced by a gas bubble source away from the web of media as it is advanced through the plating solution in the plating tank.

Bildübertragungstrommel für Dokumentendrucker/-kopierer

Eine Trommelanordnung (DA) umfasst eine austauschbare Hülse (22) aus elastischem Material, die durch einen starren zylinderförmigen Aufspanndorn (20) gestützt wird, mit einem Luftlager an einem Ende, durch das das Anbringen und Entfernen der elastischen Hülse (22) vereinfacht wird. Das Luftlager wird durch ein Paar zusammenwirkender Platten (52, 60) gebildet, von denen eine mit gleichmäßig verteilten, radial verlaufenden Schlitzen (58) ausgerüstet ist. Wird Druck auf diese Platten (52, 60) augeübt, bilden sie eine zentrale Luftkammer (52C, 72) und eine Vielzahl von radial verlaufenden Kanälen (66), die dazu dienen, Druckluft radial vom Inneren des Aufspanndorns (20) nach außen zu leiten.

METHOD FOR MAKING LIGHT-BLOCKING ARTICLES

A foamed, opacifying element useful as a light-blocking article is prepared with a dry opacifying layer on a substrate. The dry opacifying layer is densified, followed by application of a functional composition formulation to form a functional composition upon drying and curing at a coverage of 0.5-15 g/m. The functional composition comprises at least: (i) glass particles such as hollow glass particles at a coverage of 0.1-2.2 g/cm, and can also include any or combination of a (iv) water-soluble or water-dispersible organic polymeric binder that may be crosslinked, thickeners, coating aids having an HLB of at least 5, (ii) lubricants, (iii) tinting materials, and (v) crosslinking agents. Among other properties, the presence of the glass particles provides additional heat absorption for the foamed, opacifying elements that can be formed into light-blocking materials. 1. A method for preparing a foamed , opacifying element , the method comprising the steps of:A) providing a substrate having a first opposing side and a second opposing side,B) applying a foamed aqueous composition onto the first opposing side of the substrate,C) drying the applied foamed aqueous composition, to provide a dry opacifying layer;D) densifying the dry opacifying layer to reduce its thickness by at least 20% compared to its original thickness;E) applying a functional composition formulation comprising (i) glass particles, to the dry opacifying layer, and thereby providing a foamed, opacifying element,', 'wherein:', 'the dry opacifying layer comprises:', '(a) at least 0.1 weight % and up to and including 35 weight % of porous particles, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of at least 2 μm and up to and including 50 μm;', {'sub': 'g', '(b′) at least 10 weight % and up to and including 80 weight % of a matrix material that is derived from a (b) binder ...

Flexographic printing system providing controlled feature characteristics

A flexographic printing system uses a flexographic printing plate to produce printed patterns on a substrate. An ink recirculation system is used to reduce variability in system performance resulting from ink viscosity changes. A recirculation pump moves ink through an ink recirculation line connected to an ink reservoir. A metering pump adds a controlled flow rate of solvent from a solvent replenishment chamber into the ink recirculation line, thereby providing replenished ink which is returned to the ink reservoir. A control system is used to control the flow rate of solvent provided by the metering pump responsive to feature characteristics determined by analyzing a captured image of the printed pattern.

Acoustic drying system with matched exhaust flow

An inkjet printing system, comprising: one or more inkjet printheads for printing drops of ink onto a receiver medium, and an acoustic air impingement drying system positioned in proximity to at least one of the inkjet printheads. The acoustic air impingement drying system includes: an airflow source providing a supply flow rate; an acoustic resonant chamber having an inlet slot that receives air from the airflow source and an outlet slot that directs air onto the receiver medium; an exhaust air channel for removing the air directed onto the receiver medium by the acoustic resonant chamber; a blower for pulling air through the exhaust air channel at an exhaust flow rate; and a blower controller that controls the supply flow rate and the exhaust flow rate, wherein the exhaust flow rate is controlled to match the supply flow rate to within 1%, or to exceed the supply flow rate.

Inkjet printing method and apparatus with feedback control

An inkjet printing method and system includes an arrangement that is adapted to repair a printed image using a combination of in-line imaging and feedback control of an inkjet printhead or printing with a redundant inkjet printhead. The inkjet printing method and system is further adapted to print at higher optical density than is normally possible by use of multi-pass capabilities.

ELECTROPHOTOGRAPHY-BASED 3D PRINTING WITH IMPROVED LAYER REGISTRATION

An additive manufacturing system includes a transfer belt traveling along a belt path including first and second moveable-position rollers and a plurality of fixed-position rollers. The belt path includes a fixed-velocity portion from the first moveable position roller to the second moveable position roller, and a variable-velocity portion from the second moveable position roller to the first moveable position roller. An electrophotography engine positioned along the fixed-velocity portion deposits a part material layer onto the transfer belt, and an image transfer assembly positioned along the variable-velocity portion transfers the part material layer onto a receiver medium. An image sensing system positioned along the belt path between the second moveable position roller and the image transfer assembly captures an image which is analyzed to determine an in-track registration error, and the positions of the first and second moveable position rollers are adjusted to compensate for the in-track registration error. 1. An electrophotography-based additive manufacturing system , comprising: a first moveable-position roller;', 'a second moveable-position roller; and', 'a plurality of fixed-position rollers;', 'wherein a portion of the belt path from the first moveable position roller to the second moveable position roller is a fixed-velocity portion, and a portion of the belt path from the second moveable position roller to the first moveable position roller is a variable-velocity portion;, 'a transfer belt traveling along a belt path around a series of rollers, wherein the rollers includesa drive system positioned along the fixed-velocity portion of the belt path that drives the transfer belt in the fixed-velocity portion at a substantially constant belt velocity;an electrophotography engine positioned along the fixed-velocity portion of the belt path that deposits a part material layer onto the transfer belt;an image transfer assembly positioned along the variable- ...

Empfängerblattzufuhr und Zufuhrgerät

Dokumentendrucker/ -kopierer mit abkoppelbarer Trommelhalterung

Ein Dokumentendrucker/-kopierer enthält ein Paar Trommelstützelemente (32, 32'), um eine Bildaufzeichnungstrommel (12) drehbar zu lagern, und optional, eine Bildübertragungstrommel (16). Wenigstens eine dieser Trommelstützelemente (32, 32') ist so konzipiert, dass sie von der Trommel/den Trommeln (12, 16), an der sie befestigt ist, abgekoppelt und in eine Position innerhalb des Maschinenrahmens (FP, RP) verschoben werden kann, in der sie den Austausch der Trommelaußenfläche (14, 18) stört. Dieses Trommelstützelement (32) enthält vorzugsweise einen selektiv aktivierbaren Klemmmechanismus (39, 45), der, wenn er aktiviert wird, ein Achslager (A1, A3) von einer Trommel (12, 16) klemmt und dadurch die Trommel (12, 16) bei der Drehung unterstützt. In deaktiviertem Zustand gibt der Klemmmechanismus (39, 45, 68) das Trommellager (B1, B3) frei, so dass das Trommelstützelement (32) axial entlang der Trommelachse (A1, A3) in eine Position verschoben werden kann, die von der Trommelachse (A1, A3) entfernt ist. A document printer / copier includes a pair of drum support members (32, 32 ') for rotatably supporting an image recording drum (12) and, optionally, an image transfer drum (16). At least one of these drum support elements (32, 32 ') is designed so that it can be decoupled from the drum (s) (12, 16) to which it is attached and moved into a position within the machine frame (FP, RP) , in which it interferes with the exchange of the outer drum surface (14, 18). This drum support element (32) preferably contains a selectively activatable clamping mechanism (39, 45) which, when activated, clamps an axle bearing (A1, A3) from a drum (12, 16) and thereby the drum (12, 16) that supports rotation. In the deactivated state, the clamping mechanism (39, 45, 68) releases the drum bearing (B1, B3), so that the drum support element (32) can be moved axially along the drum axis (A1, A3) to a position which is different from the drum axis ( A1, A3) is removed.

PERFORATOR WITH TRANSLATING PERFORATING DEVICES

Apparatus for perforating a moving receiver includes perforating devices, each with two parallel perforating wheels and a pressure wheel arranged so that the perforating wheels are pressed laterally against the pressure wheel to define two perforating areas and a chad area arranged laterally between the perforating areas. A drive mechanism rotates the perforating or pressure wheels to perforate the moving receiver parallel to its feed direction in the perforating areas, whereby one or more proto-chads are defined on the receiver. A transport mechanism selectively moves the plurality of perforating devices perpendicular to the feed direction of the receiver. A controller receives a job specification including two or more specified perforation locations and causes the transport mechanism to laterally position two or more of the plurality of perforating devices to perforate the moving receiver in the specified perforation locations. 1. Apparatus for perforating a moving receiver comprising:a plurality of perforating devices, each comprising two parallel perforating wheels and a pressure wheel arranged so that the perforating wheels are pressed laterally against the pressure wheel to define two perforating areas and a chad area arranged laterally between the perforating areas;a drive mechanism for rotating the perforating wheels or pressure wheel of two or more of the plurality of perforating devices so that the rotating perforating wheels engage the moving receiver to perforate the moving receiver parallel to its feed direction in the perforating areas, whereby one or more proto-chads are defined on the moving receiver;a transport mechanism for selectively moving the plurality of perforating devices perpendicular to the feed direction of the moving receiver; anda controller for receiving a job specification including two or more specified perforation locations and causing the transport mechanism to laterally position two or more of the plurality of perforating devices ...

Vorrichtung zum vereinfachten Handhaben eines Vorrats von Registerblättern in einem mit Vakuum arbeitenden Blattfeeder

Castered and gimballed cleaning web with self-tensioning

A mechanism for cleaning the surface of an operative element of a reproduction apparatus. The cleaning mechanism includes an elongated web of cleaning cloth material. A first support provides a supply of the elongated web of cleaning cloth material, and a second support provides a take-up for the elongated web of cleaning cloth material. A back-up member is located in operative association with the element of the reproduction apparatus to be cleaned, the elongated web of cloth material passing over the back-up member in supply of the cloth material from the first support to the second support. A support is provided for the back-up member, which enables caster and gimbal movement of the back-up member to align the back-up member with the element of the reproduction apparatus to be cleaned. A motor is operatively coupled to the second support to drive the second support for selectively advancing the elongated web of cleaning cloth material from the first support to the second support to provide ...

Roller fuser system with intelligent control of fusing member temperature for printing mixed media types

Internally-heated external rollers transfer heat rapidly to a fuser roller in an electrostatographic printer. Stored media process set points, input image content, and input media type data are used to regulate the heat transfer rate by varying the nip width between the heated external rollers and the fuser roller. The rate of heat transfer and the rate of heat transfer adjustment are sufficiently rapid that many different media weights and types may be mixed in a print run without restrictions on media run lengths, without collation requirements per run, and without productivity losses due to slowing of feed rate for heavier receivers.

Inking system for flexographic printing

A flexographic printing system comprising a print module including a plate cylinder on which is mounted a flexographic printing plate, an impression cylinder, an ink pan containing an ink, and an anilox roller for transferring the ink to the flexographic printing plate. A fountain roller mounted to the ink pan is at least partially immersed in the ink in the ink pan and transfers the ink to the anilox roller. A doctor blade mounted to the ink pan and is on a side of the anilox roller proximate to the impression cylinder removes excess amounts of the ink from the patterned surface of the first anilox roller before the ink is transferred to the flexographic printing plate.

Acoustic drying system with interspersed exhaust channels

An acoustic air impingement drying system is provided for drying a material. An inlet chamber receives air from an airflow source provides air at a supply flow rate. A plurality of acoustic resonant chambers are provided, each having an inlet slot that receives air from the inlet chamber and an outlet slot that directs air onto the material, wherein the acoustic resonant chambers impart acoustic energy to the transiting air, the outlet slots being oriented at an oblique angle relative to the width dimension of the pneumatic transducer unit. A plurality of exhaust air channels interspersed between the outlet slots remove the air directed onto the material by the acoustic resonant chambers. A blower pulls air through the exhaust air channels at an exhaust flow rate.

Empfängerblattzufuhr und Zufuhrgerät

HIGH OPTICAL DENSITY INKJET PRINTING METHOD

An inkjet printing method and system includes an arrangement that is adapted to repair a printed image using a combination of in-line imaging and feedback control of an inkjet printhead or printing with a redundant inkjet printhead. The inkjet printing method and system is further adapted to print at higher optical density than is normally possible by use of multi-pass capabilities. 1. A method of printing an image at a high optical density , the method comprising the steps of:using an inkjet printhead to print a first image pattern having a low optical density onto media;at least partially drying said first printed image pattern on said media;using said inkjet printhead at least one more time to print a second image pattern having a low optical density on top of the first image pattern, wherein at least a portion of the second image pattern is the same as the first image pattern; anddrying said media with said first image pattern and said second image pattern printed thereon, wherein the media is transported in a printing direction past the inkjet printhead on an endless belt, and the media is held in contact with the endless belt between the printing of the first image pattern and the second image pattern by the inkjet printhead.2. A method according to claim 1 , further comprising:scanning said printed first image pattern and using information from said scanning to determine if the media has shifted; andusing said scanning information to adjust a position of one of the media or the inkjet printhead relative to the other of the media or the inkjet printhead if the media has shifted to align the inkjet printhead with the first image pattern prior to the printing of the second image pattern.3. A method according to claim 1 , further comprising:scanning said printed first image pattern and using information from said scanning to determine if the media has shifted and caused a distortion of the first image pattern; andusing said scanning information to alter the ...

Inking system for flexographic printing

RECEIVER-PUNCTURING DEVICE WITH TRANSLATING PUNCTURING DEVICES

Apparatus for selectively puncturing a moving receiver includes puncturing devices, each with two parallel puncturing wheels and a pressure wheel. A drive mechanism rotates the puncturing wheels or pressure wheel of two or more puncturing devices so that the rotating puncturing wheels engage the moving receiver to puncture the moving receiver parallel to its feed direction in the puncturing areas. A transport mechanism selectively moves the plurality of puncturing devices perpendicular to the feed direction of the receiver. A controller receives a job specification including two or more specified puncture locations and causes the transport mechanism to laterally position two or more of the plurality of puncturing devices to puncture the moving receiver in the specified puncture locations. A rotatable turret with various shaft segments can be arranged so that perforating devices can be moved on and off the shaft segments. 1. Apparatus for selectively puncturing a moving receiver , the apparatus comprising:a plurality of puncturing devices, each comprising two parallel puncturing wheels and a pressure wheel, the puncturing wheels and the pressure wheel arranged so that force can be applied between the puncturing wheels and the pressure wheel to puncture the moving receiver, whereby two puncturing areas and a chad area arranged laterally between the puncturing areas are defined;a drive mechanism for rotating the puncturing wheels or pressure wheel of two or more of the plurality of puncturing devices so that the rotating puncturing wheels engage the moving receiver to puncture the moving receiver parallel to its feed direction in the puncturing areas, whereby one or more proto-chads are defined on the moving receiver;a transport mechanism for selectively moving the plurality of puncturing devices across the feed direction of the moving receiver along a transport axis; anda controller for receiving a job specification including two or more specified puncture locations ...

Dokumentendrucker mit abkoppelbarer Trommelhalterung

Dokumentendrucker, der folgendes aufweist: – einen Rahmen mit einer Frontrahmenplatte (FP); – wenigstens einen Passstift (P1, P3), der sich an einer vorbestimmten Stelle von der Frontrahmenplatte (FP) erstreckt; – eine Bildaufzeichnungstrommel (12) mit einer Hülse, die eine Oberfläche (14) aufweist; – zwei auf einer gedachten Drehachse der Bildaufzeichnungstrommel (12) liegende Achsen (A1, A2), die an einander gegenüberliegenden Enden der Hülse mit ihr gekoppelt sind, und sich nach außen erstrecken, wobei jede der Achsen (A1, A2) ein Lager (B1, B2) hat und wobei die jeweiligen Lager (B1, B2) die jeweiligen Achsen (A1, A2) und hierüber die Hülse der Bildaufzeichnungstrommel (12) drehbar lagern; – eine Vielzahl von Arbeitsstationen (20, 22, 24, 25, 26), die um die Oberfläche (14) der Hülse der Bildaufzeichnungstrommel (12) herum angeordnet ist; und – ein vorderes Trommelstützelement (32), das an der Frontrahmenplatte (FP) angebracht und auf dieser mittels des wenigstens einen Passstifts..

Vorrichtung zum aufeinander folgenden Abtransportieren von Blättern von einem Blattstapel

Vorrichtung zum aufeinander folgenden Abtransportieren von Blättern von einem Blattstapel (S), die folgendes aufweist: – einen Blattförderkopf (30) mit einem Luftraum (32); – eine mit dem Luftraum in Fließverbindung stehende Vakuumquelle; – dem Luftraum zugeordnete Mittel, die ein vom Vakuum angezogenes Blatt in einer Blattförderrichtung vom Blattstapel (S) wegbewegen; – Mittel zum Haltern des Blattstapels derart, dass das oberste Blatt des Blattstapels (S) auf einer vorgegebenen Höhe im Abstand von den Bewegungsmitteln des Blattförderkopfes (30) gehalten wird; – eine erste Luftdüsenanordnung (42), die so aufgebaut ist, dass sie einen Luftstrom zum Blattstapel (S) leitet, um die obersten Blätter des Blattstapels (S) bis zu einem Punkt anzuheben, der es den obersten Blättern des Stapels erlaubt, durch Vakuum aus dem Luftraum des Blattförderkopfes (30) entnommen zu werden; und – eine zweite Luftdüsenanordnung (44), die so aufgebaut ist, dass sie einen Luftstrom zu einem Blatt leitet, um..

Vorrichtung zum fliegenden Lagern von Trommeln in einem Dokumentendrucker/-kopierer

Eine Vorrichtung zum fliegenden Lagern von Trommeln (12, 16), die zum Einsatz in einem Dokumentendrucker/-kopierer bestimmt ist, umfasst (i) ein Gehäuse (60) mit einer Öffnung (62); (ii) einen bewegbar in der Öffnung (62) angeordneten Schlitten (58), der geeignet ist, um eine Trommelachse (A4) aufzunehmen, zu halten und drehbar zu lagern; und (iii) eine Vielzahl von Führungsrollen (72, 72', 74, 74', 76, 76', 78, 78'), die am Schlitten (58) drehbar montiert sind und mit der gegenüberliegenden Außenfläche des Gehäuses (60) in Kontakt gebracht werden können, um die Bewegung des Schlittens (58) in eine im Wesentlichen senkrecht zur Drehachse (A4) der Trommel (16) verlaufende Richtung zu begrenzen. Die Bewegung des Schlittens (58) wird vorzugsweise vom Stellglied (68) eines Druckluftzylinders (AC4) gesteuert, der mit mindestens einer Referenzfläche (66, 67) innerhalb der Gehäuseöffnung (62) zusammenarbeitet, um die Trommelachse (16) in einer gewünschten Position anzuordnen. A device for on-the-fly storage of drums (12, 16), which is intended for use in a document printer / copier, comprises (i) a housing (60) with an opening (62); (ii) a carriage (58) movably arranged in the opening (62), which is suitable for receiving, holding and rotatably supporting a drum axis (A4); and (iii) a plurality of guide rollers (72, 72 ', 74, 74', 76, 76 ', 78, 78') rotatably mounted on the carriage (58) and with the opposite outer surface of the housing (60) in Contact can be brought to limit the movement of the carriage (58) in a direction substantially perpendicular to the axis of rotation (A4) of the drum (16). The movement of the carriage (58) is preferably controlled by the actuator (68) of an air cylinder (AC4) which cooperates with at least one reference surface (66, 67) within the housing opening (62) in order to arrange the drum axis (16) in a desired position .

Controlling line widths in flexographic printing

A method for controlling feature characteristics in a flexographic printing system that forms a printed pattern on a substrate by applying ink from an ink reservoir using a flexographic printing plate mounted on a plate cylinder. An imaging system is used to capture an image of the pattern printed on the substrate, and the captured image is analyzed to determine a feature characteristic of one or more features of the printed pattern. A control system automatically controls an amount of solvent used to replenish the ink in the ink reservoir responsive to the determined feature characteristic.

Flexographic printing system with pivoting ink pan

A flexographic printing system including an ink pan configured to pivot around a pivot element having a pivot axis. A first bracket affixed to the ink pan is configured to rest on the pivot element, and a second bracket is affixed to the ink pan in an adjustable position and is configured to constrain motion of the ink pan to a pivoting motion around the pivot axis. A fountain roller is mounted on the ink pan and is at least partially immersed in the ink in the ink pan for transferring the ink to an anilox roller having a patterned surface for transferring a controlled amount of ink from the ink pan to the flexographic printing plate. A height adjustment mechanism is provided for adjusting a height of a distal portion of the ink pan to control the extent of contact between the fountain roller and the anilox roller.

CLEANING BLADE MEMBER AND APPARATUS WITH CONTROLLED TRIBOCHARGING

A cleaning system has a composite photoreceptive imaging member having a support layer, an electrically conductive layer interfacing with the support layer, a photoconductive charge generation layer interfacing with the electrically conductive layer and generating charge holes and electrons in response to exposure to electromagnetic radiation; a charge transport layer that allows charge holes to migrate from the charge generation layer to the outer surface while resisting migration of electrons from the charge generation layer to the outer surface and a cleaning blade member having a cleaning surface layer against the electrostatic surface to at least in part remove toner and debris from the outer surface. The cleaning surface layer has a first material and a second material that are combined in proportions that cause a triboelectric charge to be formed on the outer surface having a difference of potential of between zero and minus 20 volts. 1. A cleaning system comprising:a composite photoreceptive imaging member having a support layer, an electrically conductive layer interfacing with the support layer, a photoconductive charge generation layer interfacing with the electrically conductive layer and generating charge holes and electrons in response to exposure to electromagnetic radiation; a charge transport layer that allows charge holes to migrate from the charge generation layer to the outer surface while resisting migration of electrons from the charge generation layer to the outer surface; and,a cleaning blade member having a cleaning surface layer against the electrostatic surface to at least in part remove toner and debris from the outer surface;wherein the cleaning surface layer has a first material and a second material that are combined in proportions that cause a triboelectric charge to be formed on the outer surface having a difference of potential of between zero and minus 20 volts to be generated between the outer surface and a ground.2. The cleaning ...

Electrophotographic printer and transitional cleaning system

Printers and cleaning systems are provided. A cleaning system has an actuator that moves the electrostatic imaging member in a second direction opposite the first direction and a frame positions a mounting within a first range of mounting distances from the electrostatic imaging member with the mounting holding a cleaning blade at a holding angle that causes a free length of the cleaning blade to extend along a first direction to position a cleaning end of the cleaning blade to engage the electrostatic imaging member for movement therewith. The electrostatic imaging member urges the cleaning end in the second direction to deflect the cleaning blade to extend along the second direction to position the cleaning end to wipe the electrostatic imaging member and the free length, the holding angle and the working angle cause the cleaning edge to wipe at a working angle between about 85 and 89 degrees.

Bildübertragungstrommel für Dokumentendrucker/-kopierer

Verfahren zum Bilden einer Trommelanordnung (DA), in der ein zylinderförmiger Aufspanndorn (20) so angepasst wird, dass er eine abnehmbare äußere Hülse (22) aus elastischem Material stützt, wobei das Verfahren die folgenden Verfahrensschritte umfasst: Schaffen einer zylinderförmigen Röhre (25) von vorbestimmtem Außendurchmesser, die ein Ende mit einer kreisförmigen Abschlussplatte (52) aufweist, die in Wirkverbindung mit der Röhre (25) steht, wobei der Durchmesser der Abschlussplatte (52) dem vordefinierten Außendurchmesser der zylinderförmigen Röhre (25) entspricht, und die Abschlussplatte (52) eine Vielzahl sich radial erstreckender Schlitze (58) in einer ebenen Oberfläche (52A) umfasst, die zur Mitte der Röhre (25) hin ausgerichtet ist, wobei die Schlitze (58) zur ebenen Oberfläche (52A) hin offen, aber zum Inneren der Abschlussplatte (52) geschlossen sind und von einer mittig positionierten ringförmigen Vertiefung (52C) in der ebenen Oberfläche (52A) bis zur äußeren Begrenzung (52D) ...

ELECTROPHOTOGRAPHIC PRINTER AND CLEANING SYSTEM WITH SCRAPER CLEANING SYSTEM

Electrophotographic printers and cleaning systems for an electrostatic imaging member are provided. In one aspect the cleaning system has a scraper a mounting holding the scraper so that a free length of the scraper extends from the mounting and a frame positioning the mounting relative to the electrostatic imaging member so that the scraper extends along a holding angle toward the electrostatic imaging member and so that the mounting is separated from the electrostatic imaging member by an extension distance along the holding angle that is less than the free length with the scraper resiliently deflecting to fit within the extension distance to define a working angle where the scraper contacts the electrostatic imaging member. The extension distance is within a range of extension distances that cause the scraper to have a working angle that is within a range of working angles are greater than the working angles of an alternative range of working angles if the scraper were to be positioned within an alternative range of extension distances that is greater than the range of extension distances.

Acoustic drying system with matched exhaust flow

An inkjet printing system, comprising: one or more inkjet printheads for printing drops of ink onto a receiver medium, and an acoustic air impingement drying system positioned in proximity to at least one of the inkjet printheads. The acoustic air impingement drying system includes: an airflow source providing a supply flow rate; an acoustic resonant chamber having an inlet slot that receives air from the airflow source and an outlet slot that directs air onto the receiver medium; an exhaust air channel for removing the air directed onto the receiver medium by the acoustic resonant chamber; a blower for pulling air through the exhaust air channel at an exhaust flow rate; and a blower controller that controls the supply flow rate and the exhaust flow rate, wherein the exhaust flow rate is controlled to match the supply flow rate to within 1%, or to exceed the supply flow rate.

Roller contact adjustment for flexographic printing system

A method for adjusting an extent of contact between a fountain roller mounted within a pivotable ink pan and an anilox roller in a flexographic printing system, the pivotable ink pan being adapted to pivot around a pivot axis disposed proximate to a first end of the pivotable ink pan. The pivotable ink pan is positioned to provide a predetermined gap between the anilox roller and the fountain roller by inserting a shim between the fountain roller and the anilox roller. The position of the pivotable ink pan is adjusted by adjusting a height of a distal portion of the pivotable ink pan by a predetermined amount that is known to close the predetermined gap to a desired extent. The position of the pivotable ink pan is then locked such that the distal portion of the pivotable ink pan is maintained at the adjusted height.

ACOUSTIC DRYING SYSTEM WITH PERIPHERAL EXHAUST CHANNEL

An acoustic air impingement drying system is provided for drying a material using a pneumatic transducer unit. An inlet chamber receives air from an airflow source at a supply flow rate. A plurality of acoustic resonant chambers are arranged in a drying zone, each having an inlet slot that receives air from the inlet chamber and an outlet slot that directs air onto the material, the outlet slots being oriented at an oblique angle relative to a width dimension of the pneumatic transducer unit. One or more peripheral exhaust air channels are arranged around the outer boundary of the drying zone for removing the air directed onto the material by the acoustic resonant chambers. A blower pulls air through the exhaust air channels at an exhaust flow rate. 1. An acoustic air impingement drying system for drying a material , comprising:an airflow source providing a supply flow rate; an inlet chamber that receives air from the airflow source', 'a plurality of acoustic resonant chambers arranged in a drying zone, each having an inlet slot that receives air from the inlet chamber and an outlet slot that directs air onto the material, wherein the acoustic resonant chambers impart acoustic energy to the transiting air, the outlet slots being oriented at an oblique angle relative to the width dimension of the pneumatic transducer unit, the drying zone having an outer boundary; and', 'one or more peripheral exhaust air channels arranged around the outer boundary of the drying zone for removing the air directed onto the material by the acoustic resonant chambers; and, 'a pneumatic transducer unit having a width dimension that spans a width of the material includinga blower for pulling air through the exhaust air channels at an exhaust flow rate.2. The acoustic air impingement drying system of wherein the drying zone is fully surrounded by a single continuous peripheral exhaust air channel.3. The acoustic air impingement drying system of wherein the pneumatic transducer unit ...

ELECTROPHOTOGRAPHIC PRINTER AND CLEANING SYSTEM

Cleaning systems for an electrostatic imaging member and printers having cleaning systems are provided. In one aspect, a cleaning system has a wiper, a mounting holding the wiper so that an extension length of the wiper extends from the mounting and a frame positioning the mounting relative to the electrostatic imaging member so that the wiper extends along a holding angle toward the electrostatic imaging member and so that the mounting is separated from the electrostatic imaging member by an extension distance along the holding angle that is less than the extension length with the wiper resiliently bending to fit within the extension distance to define a working angle. The extension distance is within a range of extension distances that cause the working angle to be within a range of working angles that are greater than a range of working angles associated with a greater range of extension distances. 1. A cleaning system for an electrostatic imaging member , the cleaning system comprisinga wiper; and,a mounting holding the wiper so that an extension length of the wiper extends from the mounting;a frame positioning the mounting relative to the electrostatic imaging member so that the wiper extends along a holding angle toward the electrostatic imaging member and so that the mounting is separated from the electrostatic imaging member by an extension distance along the holding angle that is less than the extension length with the wiper resiliently bending to fit within the extension distance to define a working angle where the wiper contacts the electrostatic imaging member; and,wherein the extension distance is within a range of extension distances that cause the wiper to have a working angle that is within a range of working angles are greater than the working angles of an alternative range of working angles if the wiper were to be positioned within an alternative range of extension distances that is greater than the range of extension distances.2. The cleaning ...

Electrophotography-based 3D printing with improved layer registration

An additive manufacturing system includes a transfer belt traveling along a belt path including first and second moveable-position rollers and a plurality of fixed-position rollers. The belt path includes a fixed-velocity portion from the first moveable position roller to the second moveable position roller, and a variable-velocity portion from the second moveable position roller to the first moveable position roller. An electrophotography engine positioned along the fixed-velocity portion deposits a part material layer onto the transfer belt, and an image transfer assembly positioned along the variable-velocity portion transfers the part material layer onto a receiver medium. An image sensing system positioned along the belt path between the second moveable position roller and the image transfer assembly captures an image which is analyzed to determine an in-track registration error, and the positions of the first and second moveable position rollers are adjusted to compensate for the in-track registration error.

Web transport system including fluid shield

A web transport system for transporting a web of media along a web-transport path includes a fluid bar for guiding the web of media, and first and second fluid shields positioned proximate to first and second ends of the fluid bar. A liquid is pumped through holes in an exterior bearing surface of the fluid bar into a region between the web of media and the bearing surface of the fluid bar, thereby pushing the web of media away from the fluid bar. The fluid shields are positioned to redirect fluid that is ejected from the region between the web of media and the bearing surface of the fluid bar along the edges of the web of media.

ELECTROPHOTOGRAPHIC PRINTER AND TRANSITIONAL CLEANING SYSTEM

Printers and cleaning systems are provided. A cleaning system has an actuator that moves the electrostatic imaging member in a second direction opposite the first direction and a frame positions a mounting within a first range of mounting distances from the electrostatic imaging member with the mounting holding a cleaning blade at a holding angle that causes a free length of the cleaning blade to extend along a first direction to position a cleaning end of the cleaning blade to engage the electrostatic imaging member for movement therewith. The electrostatic imaging member urges the cleaning end in the second direction to deflect the cleaning blade to extend along the second direction to position the cleaning end to wipe the electrostatic imaging member and the free length, the holding angle and the working angle cause the cleaning edge to wipe at a working angle between about 85 and 89 degrees.

WEB TRANSPORT SYSTEM INCLUDING FLUID SHIELD

A web transport system for transporting a web of media along a web-transport path includes a fluid bar for guiding the web of media, and first and second fluid shields positioned proximate to first and second ends of the fluid bar. A liquid is pumped through holes in an exterior bearing surface of the fluid bar into a region between the web of media and the bearing surface of the fluid bar, thereby pushing the web of media away from the fluid bar. The fluid shields are positioned to redirect fluid that is ejected from the region between the web of media and the bearing surface of the fluid bar along the edges of the web of media. 1. A web transport system for transporting a web of media along a web-transport path , the web of media having a width in a cross-track direction from a first edge to a second edge , comprising:a fluid bar disposed along the web-transport path and spanning the width of the web of media, the web of media being guided as it passes the fluid bar with a first surface of the web of media facing an exterior bearing surface of the fluid bar, wherein a liquid is pumped through holes in the bearing surface of the fluid bar and into a region between the first surface of the web of media and the bearing surface of the fluid bar, thereby pushing the web of media away from the fluid bar, and wherein the fluid bar is not submerged in a liquid; andfirst and second fluid shields positioned proximate to first and second ends of the fluid bar, respectively, the first and second fluid shields being positioned to redirect fluid that is ejected from the region between the first surface of the web of media and the bearing surface of the fluid bar along the first and second edges of the web of media, respectively.2. The web transport system of claim 1 , wherein the first and second fluid shields partially surround the first and second ends of the fluid bar claim 1 , respectively.3. The web transport system of claim 1 , wherein the first and second fluid shields ...

INKJET PRINTING METHOD AND APPARATUS WITH FEEDBACK CONTROL

An inkjet printing method and system includes an arrangement that is adapted to repair a printed image using a combination of in-line imaging and feedback control of an inkjet printhead or printing with a redundant inkjet printhead. The inkjet printing method and system is further adapted to print at higher optical density than is normally possible by use of multi-pass capabilities. 1. A method of printing comprising the steps of:transporting media in an initial print pass to an inkjet printhead;using the inkjet printhead to print an image on the media by applying ink from nozzles on the inkjet printhead onto said media;inspecting the printed image on the media to detect a presence of at least a streak in said printed image caused by at least one defective nozzle in said inkjet printhead;transporting the media with the printed image thereon in an additional print pass back to said inkjet printhead if a streak is detected on said printed image;adjusting a cross track position of one of the media or the inkjet printhead relative to the other of the media or the inkjet printhead to position a non-defective nozzle of the inkjet printhead over the detected streak; andapplying ink from the non-defective nozzle to an area of the printed image corresponding to the detected streak to repair the streak in said printed image.2. A method according to claim 1 , further comprising:processing the printed image if a streak is detected to determine a location of the detected streak relative to an edge of the printed image on the media, such that said adjusting step adjusts the cross track position of the one of the media or the inkjet printhead relative to the other of the media or the inkjet printhead in accordance with the determined location of the detected streak.3. A method according to claim 1 , wherein said inspecting step comprises scanning the printed image on the media to detect the presence of the streak.4. A method according to claim 1 , wherein the media with the ...

PERFORATOR WITH BACKER AND TRANSLATING PERFORATING DEVICES

Apparatus for perforating a moving receiver includes a backer member across a sheet area. Perforating devices each have two perforating wheels selectively pressed towards the backer member. A drive mechanism rotates the backer member or the perforating wheels to perforate the moving receiver. A transport mechanism selectively moves the perforating devices perpendicular to the receiver feed direction. A controller receives a job specification including two or more specified perforation locations and causes the transport mechanism to disengage two or more perforating devices, laterally position them to perforate the moving receiver in the specified perforation locations, and then engage them to perforate.

CONCURRENTLY REMOVING SHEET CHARGE AND CURL

Decurling a charged sheet and removing charge from the charged sheet prior to stacking, includes forming a nip between a roller and a compliant surface and applying pressure between the roller and compliant surface so that the nip has a decurling shape and when the nip engages the sheet it will perform a decurling function; and moving the charged sheet through the nip while the compliant surface has an AC voltage applied thereto so that a first side of the charged sheet is in contact with the compliant surface and has its charge substantially dissipated, whereby charge substantially remains on a second side of the charged sheet in contact with the roller and curling of the charged sheet is reduced. The method further includes using at least one non-contact charge removal device to remove charge from the second side of the charged sheet; and stacking the discharged sheet.

Cleaning blade member and apparatus with controlled tribocharging

A cleaning system has a composite photoreceptive imaging member having a support layer, an electrically conductive layer interfacing with the support layer, a photoconductive charge generation layer interfacing with the electrically conductive layer and generating charge holes and electrons in response to exposure to electromagnetic radiation; a charge transport layer that allows charge holes to migrate from the charge generation layer to the outer surface while resisting migration of electrons from the charge generation layer to the outer surface and a cleaning blade member having a cleaning surface layer against the electrostatic surface to at least in part remove toner and debris from the outer surface. The cleaning surface layer has a first material and a second material that are combined in proportions that cause a triboelectric charge to be formed on the outer surface having a difference of potential of between zero and minus 20 volts.

Flexographic printing system with solvent replenishment

本發明係關於一種柔版印刷系統，其係使用柔版印刷板以在基板上產生出印刷圖案。使用油墨再循環系統以減小由於油墨黏度改變所致之系統性能可變性。再循環泵使油墨移動通過連接至油墨貯集槽之油墨再循環管線。計量泵自溶劑補給室添加控制流速的溶劑進入油墨再循環管線中，因而提供補給油墨。該補給油墨經在複數個橫跨油墨貯集槽寬度之隔開位置處包括複數個供應口之分配管返送至油墨貯集槽。使用控制系統以控制由計量泵所提供溶劑的流速。

Web transport system including scavenger blade

A web transport system for transporting a web of media along a web-transport path including a fluid bar for guiding the web of media, and a scavenger blade positioned downstream of the fluid bar. A liquid is pumped through holes in an exterior bearing surface of the fluid bar, thereby pushing the web of media away from the fluid bar. The scavenger bar includes a blade edge facing the first surface of the web of media, the blade edge being spaced apart from the first surface of the web of media by a gap distance. The scavenger blade removes at least some liquid from the first surface of the web of media as it passes by the scavenger blade, thereby reducing the amount of liquid that is carried along to portions of the web-transport path that are downstream of the scavenger blade.

ELECTROPHOTOGRAPHY-BASED ADDITIVE PRINTING WITH IMPROVED LAYER REGISTRATION

An additive manufacturing system includes a transfer belt traveling along a belt path. An electrophotography engine positioned along belt path deposits a part material layer onto the transfer belt, and an image transfer assembly positioned along the belt path transfers the part material layer onto a build platform. An image sensing system positioned along the belt path between the electrophotography engine and the image transfer assembly captures an image which is analyzed to determine an in-track registration error. An in-track position of the build platform is adjusted to compensate for the in-track registration error. 1. An electrophotography-based additive manufacturing system , comprising:a transfer belt traveling along a belt path;an electrophotography engine positioned along belt path that deposits a part material layer onto the transfer belt;an image transfer assembly positioned along the belt path that transfers the part material layer onto a build platform;an image sensing system positioned along the belt path between the electrophotography engine and the image transfer assembly adapted to capture an image of the part material layer on the transfer belt; and analyzes a captured image from the image sensing system to determine an in-track registration error between an intended position of the part material layer and an actual position of the part material layer; and', 'adjusts an in-track position of the build platform to compensate for the in-track registration error before the part material layer is transferred onto the build platform in registration with previously transferred part material layers., 'a control system that2. The electrophotography-based additive manufacturing system of claim 1 , wherein the additive manufacturing system builds a three-dimensional part by building up a sequence of part material layers on the build platform.3. The electrophotography-based additive manufacturing system of claim 2 , wherein the image transfer assembly is an ...

ELECTROLESS PLATING SYSTEM INCLUDING BUBBLE GUIDE

A roll-to-roll electroless plating system, including a plating tank containing plating solution, and a web advance system for advancing a web of media along a web-transport path that passes through the plating tank. One or more fluid guides are positioned within the plating tank to redirect plating fluid containing gas bubbles introduced by a gas bubble source away from the web of media as it is advanced through the plating solution in the plating tank.

ACOUSTIC DRYING SYSTEM WITH MATCHED EXHAUST FLOW

An inkjet printing system, comprising: one or more inkjet printheads for printing drops of ink onto a receiver medium, and an acoustic air impingement drying system positioned in proximity to at least one of the inkjet printheads. The acoustic air impingement drying system includes: an airflow source providing a supply flow rate; an acoustic resonant chamber having an inlet slot that receives air from the airflow source and an outlet slot that directs air onto the receiver medium; an exhaust air channel for removing the air directed onto the receiver medium by the acoustic resonant chamber; a blower for pulling air through the exhaust air channel at an exhaust flow rate; and a blower controller that controls the supply flow rate and the exhaust flow rate, wherein the exhaust flow rate is controlled to match the supply flow rate to within 1%, or to exceed the supply flow rate. 1. An inkjet printing system , comprising:one or more inkjet printheads, each having an array of ink nozzles for printing drops of ink onto a receiver medium;a receiver media transport system for moving the receiver medium past the inkjet printheads; and an airflow source providing air at a supply flow rate;', 'an acoustic resonant chamber having an inlet slot that receives air from the airflow source and an outlet slot that directs air onto the receiver medium, wherein the acoustic resonant chamber imparts acoustic energy to the air flowing through the acoustic resonant chamber;', 'an exhaust air channel for removing the air directed onto the receiver medium by the acoustic resonant chamber;', 'a blower for pulling air through the exhaust air channel at an exhaust flow rate; and', 'a blower controller that controls the exhaust flow rate, wherein the exhaust flow rate is controlled to match the supply flow rate to within 1%, or to exceed the supply flow rate., 'an acoustic air impingement drying system positioned in proximity to at least one of the inkjet printheads, the acoustic air ...

Flexographic printing system with solvent replenishment

A flexographic printing system uses a flexographic printing plate to produce printed patterns on a substrate. An ink recirculation system is used to reduce variability in system performance resulting from ink viscosity changes. A recirculation pump moves ink through an ink recirculation line connected to an ink reservoir. A metering pump adds a controlled flow rate of solvent from a solvent replenishment chamber into the ink recirculation line, thereby providing replenished ink. The replenished ink is returned to the ink reservoir through a distribution tube that includes a plurality of supply ports at a plurality of spaced apart locations across a width of the ink reservoir. A control system is used to control the flow rate of solvent provided by the metering pump.

ACOUSTIC DRYING SYSTEM WITH MATCHED EXHAUST FLOW

An inkjet printing system, comprising: one or more inkjet printheads for printing drops of ink onto a receiver medium, and an acoustic air impingement drying system positioned in proximity to at least one of the inkjet printheads. The acoustic air impingement drying system includes: an airflow source providing a supply flow rate; an acoustic resonant chamber having an inlet slot that receives air from the airflow source and an outlet slot that directs air onto the receiver medium; an exhaust air channel for removing the air directed onto the receiver medium by the acoustic resonant chamber; a blower for pulling air through the exhaust air channel at an exhaust flow rate; and a blower controller that controls the supply flow rate and the exhaust flow rate, wherein the exhaust flow rate is controlled to match the supply flow rate to within 1%, or to exceed the supply flow rate. 1. An inkjet printing system , comprising:one or more inkjet printheads, each having an array of ink nozzles for printing drops of ink onto a receiver medium;a receiver media transport system for moving the receiver medium past the inkjet printheads; and an airflow source providing air at a supply flow rate;', 'an acoustic resonant chamber having an inlet slot that receives air from the airflow source and an outlet slot that directs air onto the receiver medium, wherein the acoustic resonant chamber imparts acoustic energy to the air flowing through the acoustic resonant chamber;', 'an exhaust air channel for removing the air directed onto the receiver medium by the acoustic resonant chamber;', 'a blower for pulling air through the exhaust air channel at an exhaust flow rate; and', 'a blower controller that controls the supply flow rate and the exhaust flow rate, the supply flow rate being controlled by sensing the supply flow rate and adjusting the supply flow rate when a difference between the sensed supply flow rate and a predefined aim supply flow rate exceeds a predefined threshold, and ...

Flexographic printing system with solvent replenishment

WEB TRANSPORT SYSTEM INCLUDING SCAVENGER BLADE

A web transport system for transporting a web of media along a web-transport path including a fluid bar for guiding the web of media, and a scavenger blade positioned downstream of the fluid bar. A liquid is pumped through holes in an exterior bearing surface of the fluid bar, thereby pushing the web of media away from the fluid bar. The scavenger bar includes a blade edge facing the first surface of the web of media, the blade edge being spaced apart from the first surface of the web of media by a gap distance. The scavenger blade removes at least some liquid from the first surface of the web of media as it passes by the scavenger blade, thereby reducing the amount of liquid that is carried along to portions of the web-transport path that are downstream of the scavenger blade. 1. A web transport system for transporting a web of media along a web-transport path , comprising:a fluid bar disposed along the web-transport path, the web of media being guided as it passes the fluid bar with a first surface of the web of media facing an exterior bearing surface of the fluid bar, wherein a liquid is pumped through holes in the bearing surface of the fluid bar and into a region between the first surface of the web of media and the bearing surface of the fluid bar, thereby pushing the web of media away from the fluid bar, and wherein the fluid bar is not submerged in a liquid; anda scavenger blade disposed along the web-transport path downstream of the fluid bar, the scavenger blade spanning the web of media in a cross-track direction and including a blade edge facing the first surface of the web of media, the blade edge being spaced apart from the first surface of the web of media by a gap distance, wherein the scavenger blade removes at least some liquid from the first surface of the web of media as it passes by the scavenger blade, thereby reducing the amount of liquid that is carried along to portions of the web-transport path that are downstream of the scavenger blade.2. ...

ACOUSTIC DRYING SYSTEM WITH INTERSPERSED EXHAUST CHANNELS

An acoustic air impingement drying system is provided for drying a material. An inlet chamber receives air from an airflow source provides air at a supply flow rate. A plurality of acoustic resonant chambers are provided, each having an inlet slot that receives air from the inlet chamber and an outlet slot that directs air onto the material, wherein the acoustic resonant chambers impart acoustic energy to the transiting air, the outlet slots being oriented at an oblique angle relative to the width dimension of the pneumatic transducer unit. A plurality of exhaust air channels interspersed between the outlet slots remove the air directed onto the material by the acoustic resonant chambers. A blower pulls air through the exhaust air channels at an exhaust flow rate. 1. An acoustic air impingement drying system for drying a material , comprising:an airflow source providing air at a supply flow rate; an inlet chamber that receives air from the airflow source', 'a plurality of acoustic resonant chambers, each having an inlet slot that receives air from the inlet chamber and an outlet slot that directs air onto the material, wherein the acoustic resonant chambers impart acoustic energy to the transiting air, the outlet slots being oriented at an oblique angle relative to the width dimension of the pneumatic transducer unit; and', 'a plurality of exhaust air channels interspersed between at least some of the outlet slots for removing the air directed onto the material by the acoustic resonant chambers; and, 'a pneumatic transducer unit having a width dimension that spans a width of the material includinga blower for pulling air through the exhaust air channels at an exhaust flow rate.2. The acoustic air impingement drying system of claim 1 , wherein exhaust air channels are interspersed between all of the outlet slots3. The acoustic air impingement drying system of further including one or more air barriers arranged around the outer boundary of the peripheral exhaust air ...

Flexographic ink recirculation with anti-air-entrainment features

A flexographic printing system uses a flexographic printing plate to produce printed patterns on a substrate. A fountain roller partially submerged in ink in an ink pan is used to transfer ink to an anilox roller, which transfers a controlled amount of ink to the flexographic printing plate. An ink recirculation system is used to reduce variability in system performance resulting from ink viscosity changes. A recirculation pump moves ink through an ink recirculation line connected to an ink recirculation port in an ink pan. The design of the ink pan and ink recirculation port is arranged so that an opening of the ink recirculation port is fully covered by the ink during printing by the flexographic printing system.

INKING SYSTEM FOR FLEXOGRAPHIC PRINTING

A flexographic printing system comprising a print module including a plate cylinder on which is mounted a flexographic printing plate, an impression cylinder, an ink pan containing an ink, and an anilox roller for transferring the ink to the flexographic printing plate. A fountain roller mounted to the ink pan is at least partially immersed in the ink in the ink pan and transfers the ink to the anilox roller. A doctor blade mounted to the ink pan and is on a side of the anilox roller proximate to the impression cylinder removes excess amounts of the ink from the patterned surface of the first anilox roller before the ink is transferred to the flexographic printing plate. 1. A flexographic printing system comprising: a first plate cylinder on which is mounted a first flexographic printing plate having raised features defining a first image to be printed on the first side of the substrate, the first plate cylinder rotating in a first direction of rotation;', 'a first impression cylinder that is configured to force the first side of the substrate into contact with the first flexographic printing plate, the first impression cylinder rotating in a second direction of rotation opposite to the first direction of rotation;', a front wall disposed proximate to the first impression cylinder;', 'a rear wall disposed distal to the first impression cylinder;', 'a floor extending between the front wall and the rear wall; and', 'first and second side walls that extend between the front wall and the rear wall and intersect the floor, the second side wall being opposite the first side wall;, 'a first ink pan containing a first ink, the first ink pan including, 'a first anilox roller having a patterned surface for transferring a controlled amount of the first ink from the first ink pan to the first flexographic printing plate, the first anilox roller rotating in the second direction of rotation;', 'a first fountain roller that is at least partially immersed in the first ink in the ...

Controlling line widths in flexographic printing

A method for controlling feature characteristics in a flexographic printing system that forms a printed pattern on a substrate by applying ink from an ink reservoir using a flexographic printing plate mounted on a plate cylinder. An imaging system is used to capture an image of the pattern printed on the substrate, and the captured image is analyzed to determine a feature characteristic of one or more features of the printed pattern. A control system automatically controls an amount of solvent used to replenish the ink in the ink reservoir responsive to the determined feature characteristic.

FLEXOGRAPHIC PRINTING SYSTEM WITH SOLVENT REPLENISHMENT

A flexographic printing system uses a flexographic printing plate to produce printed patterns on a substrate. An ink recirculation system is used to reduce variability in system performance resulting from ink viscosity changes. A recirculation pump moves ink through an ink recirculation line connected to an ink reservoir. A metering pump adds a controlled flow rate of solvent from a solvent replenishment chamber into the ink recirculation line, thereby providing replenished ink. The replenished ink is returned to the ink reservoir through a distribution tube that includes a plurality of supply ports at a plurality of spaced apart locations across a width of the ink reservoir. A control system is used to control the flow rate of solvent provided by the metering pump. 1. A flexographic printing system including a print module comprising:a plate cylinder on which is mounted a flexographic printing plate having raised features defining a pattern to be printed on a substrate;an impression cylinder that is configured to force the substrate into contact with the flexographic printing plate;an ink reservoir containing an ink and including one or more ink recirculation ports;an anilox roller having a patterned surface for transferring a controlled amount of the ink from the ink reservoir to the flexographic printing plate; an ink recirculation line that is connected to the ink recirculation ports of the ink reservoir;', 'a recirculation pump for moving ink through the ink recirculation line;', 'a solvent replenishment chamber containing solvent;', 'a metering pump for pumping a controlled flow rate of solvent from the solvent replenishment chamber into the ink recirculation line;', 'a mixing device for mixing the solvent and the ink thereby providing replenished ink;', 'a distribution tube for supplying the replenished ink to the ink reservoir, wherein the distribution tube includes a plurality of supply ports for supplying the replenished ink to the ink reservoir at a ...

Flexographic printing system providing controlled feature characteristics

A flexographic printing system uses a flexographic printing plate to produce printed patterns on a substrate. An ink recirculation system is used to reduce variability in system performance resulting from ink viscosity changes. A recirculation pump moves ink through an ink recirculation line connected to an ink reservoir. A metering pump adds a controlled flow rate of solvent from a solvent replenishment chamber into the ink recirculation line, thereby providing replenished ink which is returned to the ink reservoir. A control system is used to control the flow rate of solvent provided by the metering pump responsive to feature characteristics determined by analyzing a captured image of the printed pattern.

SOLVENT REPLENISHMENT USING DENSITY SENSOR FOR FLEXOGRAPHIC PRINTER

A flexographic printing system uses a flexographic printing plate to produce printed patterns on a substrate. An ink recirculation system is used to reduce variability in system performance resulting from ink viscosity changes. A recirculation pump moves ink through an ink recirculation line connected to an ink reservoir. A metering pump adds a controlled flow rate of solvent from a solvent replenishment chamber into the ink recirculation line, thereby providing replenished in which is returned to the ink reservoir. A control system is used to control the flow rate of solvent provided by the metering pump responsive to an ink density measured using a density sensor. 1. A flexographic printing system including a print module comprising:a plate cylinder on which is mounted a flexographic printing plate having raised features defining a pattern to be printed on a substrate;an impression cylinder that is configured to force the substrate into contact with the flexographic printing plate;an ink reservoir containing an ink and including one or more ink recirculation ports;an anilox roller having a patterned surface for transferring a controlled amount of the ink from the ink reservoir to the flexographic printing plate; an ink recirculation line that is connected to the one or more ink recirculation ports of the ink reservoir;', 'a recirculation pump for moving ink through the ink recirculation line;', 'a solvent replenishment chamber containing solvent;', 'a metering pump for pumping a controlled flow rate of solvent from the solvent replenishment chamber into the ink recirculation line; and', 'a mixing device for mixing the solvent and the ink thereby providing replenished ink;, 'an ink recirculation system includinga density sensor for measuring a density of the ink; anda control system for controlling the flow rate of solvent provided by metering pump based on a measured density of the ink measured using the density sensor.2. The flexographic printing system of claim ...

Flexographic printing system with pivoting ink pan

A flexographic printing system (100) including an ink pan (290) configured to pivot around a pivot element (260) having a pivot axis (206). A first bracket (262) affixed to the ink pan (290) is configured to rest on the pivot element (260), and a second bracket (263) is affixed to the ink pan (260) in an adjustable position and is configured to constrain the motion of the ink pan (290) to a pivoting motion around the pivot axis (206). A fountain roller (201) is mounted on the ink pan (290) and is at least partially immersed in the ink (205) in the ink pan (290) for transferring the ink (205) to an anilox roller (275) having a patterned surface for transferring a controlled amount of ink (205) from the ink pan (290) to the flexographic printing plate (272). A height adjustment mechanism (297) is provided for adjusting a height of a distal portion of the ink pan (290) to control the extent of contact between the fountain roller (201) and the anilox roller (275).

Electrophotography-based 3d printing with improved layer registration

An additive manufacturing system (10) includes a transfer belt (22) traveling along a belt path including first (122) and second (124) moveable-position rollers and a plurality of fixed-position rollers (120). The belt path includes a fixed-velocity portion (112) from the first moveable position roller to the second moveable position roller, and a variable-velocity portion (114) from the second moveable position roller to the first moveable position roller. An electrophotography engine (12p, 12s) positioned along the fixed-velocity portion deposits a part material layer (64p) onto the transfer belt, and an image transfer assembly (140) positioned along the variable-velocity portion transfers the part material layer onto a receiver medium (68). An image sensing system (150) positioned along the belt path between the second moveable position roller and the image transfer assembly captures an image which is analyzed to determine an in-track registration error, and the positions of the first and second moveable position rollers are adjusted to compensate for the in-track registration error.

Inking system for flexographic printing

A flexographic printing system (100) comprising a print module (110, 120, 130, 140) including a plate cylinder (111, 121, 131, 141, 271) on which is mounted a flexographic printing plate (272), an impression cylinder (274), an ink pan (200) containing an ink (205), and an anilox roller (275) for transferring the ink (205) to the flexographic printing plate (272). A fountain roller (201) mounted to the ink pan (200) is at least partially immersed in the ink (205) in the ink pan (200) and transfers the ink (205) to the anilox roller (275). A doctor blade (220) mounted to the ink pan (200) and is on a side of the anilox roller (275) proximate to the impression cylinder (274) removes excess amounts of the ink (205) from the patterned surface of the first anilox roller (275) before the ink (205) is transferred to the flexographic printing plate (272).

Method for making light-blocking articles

A foamed, opacifying element useful as a light-blocking article is prepared with a dry opacifying layer on a substrate. The dry opacifying layer is densified, followed by application of a functional composition formulation to form a functional composition upon drying and curing at a coverage of 0.5-15 g/m2. The functional composition comprises at least: (i) glass particles such as hollow glass particles at a coverage of 0.1-2.2 g/cm2, and can also include any or combination of a (iv) water-soluble or water-dispersible organic polymeric binder that may be crosslinked, thickeners, coating aids having an HLB of at least 5, (ii) lubricants, (iii) tinting materials, and (v) crosslinking agents. Among other properties, the presence of the glass particles provides additional heat absorption for the foamed, opacifying elements that can be formed into light-blocking materials.

Electrophotography-based 3d printing with improved layer registration

Apparatus for refurbishing a fusing member

The present invention is an' apparatus for refurbishing a fusing member. The apparatus includes a fusing member (110) that contacts the toner image on a receiver medium and fuses the toner image to the receiver medium. The fusing member (110) has an outer contact surface (112) of a fluorothermoplastic resin The apparatus includes a tooling member (210) positionable adjacent to the outer contact surface (112) of the fusing member (110) forming a pressure nip between the outer contact surface (112) of the fusing member (110) and the tooling member (210). A heat source (117, 230) is provided for transferring heat to both the fusing (110) and tooling member (210), wherein the surface of the fuser member (110) is engagable with the tooling member (210) to rotate at a speed of at least 1 rpm at a pressure of at least 5 psi and at a temperature of at least 10 -C below the thermoplastic melting temperature of the outer contact surface (112).

Apparatus for refurbishing a fusing member

The present invention is an' apparatus for refurbishing a fusing member. The apparatus includes a fusing member (110) that contacts the toner image on a receiver medium and fuses the toner image to the receiver medium. The fusing member (110) has an outer contact surface (112) of a fluorothermoplastic resin The apparatus includes a tooling member (210) positionable adjacent to the outer contact surface (112) of the fusing member (110) forming a pressure nip between the outer contact surface (112) of the fusing member (110) and the tooling member (210). A heat source (117, 230) is provided for transferring heat to both the fusing (110) and tooling member (210), wherein the surface of the fuser member (110) is engagable with the tooling member (210) to rotate at a speed of at least 1 rpm at a pressure of at least 5 psi and at a temperature of at least 10 -C below the thermoplastic melting temperature of the outer contact surface (112).

Printer with variable length receiver supply

Printers with variable receiver supply are provided. In one aspect a printer is provided having a source of image data and production data for use in printing a set of images, with each image having a defined size and shape and a receiver supply having a web of receiver and a cutter adapted to cut the web of receiver to a determined length. The printer also has print engine to print the images on the receiver and a finishing system that is configurable between at least two configurations. A user input system receives user input from which a priority setting can be determined between an output rate priority and an efficiency priority; and a controller determines the configuration of the finishing system, receives the image data and production data and determines a priority setting. The controller determines an organization of the images for printing the images on the receiver in the defined sizes and shapes based upon the determined priority setting and the determined configuration of the finishing system and the controller determines a length of the receiver based on the organization of the images and causes the cutter to cut the web of receiver to supply the determined length of the receiver.

Printer with variable length receiver supply

Printers with variable receiver supply are provided. In one aspect a printer is provided having a source of image data and production data for use in printing a set of images, with each image having a defined size and shape and a receiver supply having a web of receiver and a cutter adapted to cut the web of receiver to a determined length. The printer also has print engine to print the images on the receiver and a finishing system that is configurable between at least two configurations. A user input system receives user input from which a priority setting can be determined between an output rate priority and an efficiency priority; and a controller determines the configuration of the finishing system, receives the image data and production data and determines a priority setting. The controller determines an organization of the images for printing the images on the receiver in the defined sizes and shapes based upon the determined priority setting and the determined configuration of the finishing system and the controller determines a length of the receiver based on the organization of the images and causes the cutter to cut the web of receiver to supply the determined length of the receiver.

Finnisher for cutting and scoring a receiver

Finnisher for cutting or scoring a receiver

A finisher for a receiver moving in a feed direction includes a cutting device having a cutting blade and a scoring blade on opposite sides of the receiver and oriented perpendicular to the feed direction, and a scoring notch on the opposite side of the receiver from, and parallel to, the scoring blade. An actuator selectively causes the scoring blade to engage the scoring notch as the receiver moves between the scoring blade and scoring notch, so that the receiver is scored, or causes the cutting blade to engage the scoring blade, so that the receiver is cut. A controller receives a job specification including one or more cut or score location(s) on the receiver and causes the receiver to be cut at the cut location(s) or scored at the score location(s).

Web transport system including scavenger blade

A web transport system for transporting a web of media along a web-transport path including a fluid bar for guiding the web of media, and a scavenger blade positioned downstream of the fluid bar. A liquid is pumped through holes in an exterior bearing surface of the fluid bar, thereby pushing the web of media away from the fluid bar. The scavenger bar includes a blade edge facing the first surface of the web of media, the blade edge being spaced apart from the first surface of the web of media by a gap distance. The scavenger blade removes at least some liquid from the first surface of the web of media as it passes by the scavenger blade, thereby reducing the amount of liquid that is carried along to portions of the web-transport path that are downstream of the scavenger blade.

Web transport system including scavenger blade

A web transport system for transporting a web of media along a web-transport path including a fluid bar for guiding the web of media, and a scavenger blade positioned downstream of the fluid bar. A liquid is pumped through holes in an exterior bearing surface of the fluid bar, thereby pushing the web of media away from the fluid bar. The scavenger bar includes a blade edge facing the first surface of the web of media, the blade edge being spaced apart from the first surface of the web of media by a gap distance. The scavenger blade removes at least some liquid from the first surface of the web of media as it passes by the scavenger blade, thereby reducing the amount of liquid that is carried along to portions of the web-transport path that are downstream of the scavenger blade.

Method for printing a set of images

Methods for operating a printer are provided. In one aspect, a method has the steps of receiving image data and production data for printing a set of images with each image having a defined size and shape, determining a finishing configuration of a finishing system; and determining a priority setting between an output rate priority and an efficiency priority. The images are organized for printing on the receiver in the defined sizes and shapes based upon the determined priority and the finishing configuration and the images are printed on the receiver as organized. The receiver is finished to provide prints of the images each having the defined size and shape for that image.

Printer with variable length receiver supply

Printers with variable receiver supply are provided. In one aspect a printer is provided having a source of image data and production data for use in printing a set of images, with each image having a defined size and shape and a receiver supply having a web of receiver and a cutter adapted to cut the web of receiver to a determined length. The printer also has print engine to print the images on the receiver and a finishing system that is configurable between at least two configurations. A user input system receives user input from which a priority setting can be determined between an output rate priority and an efficiency priority; and a controller determines the configuration of the finishing system, receives the image data and production data and determines a priority setting. The controller determines an organization of the images for printing the images on the receiver in the defined sizes and shapes based upon the determined priority setting and the determined configuration of the finishing system and the controller determines a length of the receiver based on the organization of the images and causes the cutter to cut the web of receiver to supply the determined length of the receiver.

A digital multi-color printing machine

A printing unit for a digital multi-color printing machine, in particular for an electrophotographically operating, preferably sheet-printing printing machine, said printing unit comprising at least one transfer element (11), preferably an imaging cylinder (31) and/or a cylinder bearing a rubber blanket, for the transfer of a printing image. The invention provides a multi-color printing machine which also allows the production of high-quality prints with fewer colors, i.e., in a more cost-effective manner than if a multi-color print were produced with the same printing machine. In accordance with the invention, this object is achieved by a printing unit for a digital multi-color printing machine, which is characterized in that the transfer element (11) is moved from a transfer position into an inoperative position.

Fusing apparatus for high speed electrophotography system

A fuser and receiver release system and method are provided for improving the release of receivers in high speed of printing systems. This system controls the release of a receiver in conjunction with a fuser in a printing system, and specifically the efficiency and accuracy of the release system. One embodiment of this method includes a belt fuser that allows the separating of the heat transfer and release functions of the fuser such that fuser roller could be made of hard metal core that can be heated to high temperatures without the fear of delaminating elastomeric coatings which are common in roller fusing.