Abstract: A sheet processing apparatus includes a sheet stacking unit where sheets to be processed are stacked, a regulating member, a sheet waiting unit, a first moving unit, a second moving unit, and a control unit. The regulating member abuts on one edge of sheets conveyed to the sheet stacking unit. The sheet waiting unit keeps sheets waiting, stacks the waiting sheets displaced sequentially, and then conveys the sheets to the sheet stacking unit. The first moving unit sequentially moves the conveyed sheets, starting from a lowermost sheet, to be abutted against the regulating member. The second moving unit moves the conveyed sheets to the first moving unit. The control unit controls a moving speed of the second moving unit so that a next sheet does not reach the first moving unit until the sheet moved by the first moving unit is abutted against the regulating member.
Abstract: A method and apparatus for controlling transfer of paper. In order to align the leading end of a sheet of paper, when the sheet arrives at a predetermined position in an image forming apparatus, a registration unit is stopped from operating and a driving unit that transfers the sheet from an auxiliary paper-feeding unit is also stopped from operating so that bending and crumpling of the sheet can be minimized.
Abstract: A sheet skew feeding correcting apparatus includes a shutter member which abuts against a leading end of the sheet conveyed by the conveying apparatus, the shutter member is movable between a first attitude where the shutter member abuts against the leading end of the sheet and a second attitude where the shutter member permits the sheet to pass therethrough, and a loop abutting portion against which a loop portion of the sheet formed while the sheet is conveyed by the first sheet conveying apparatus, wherein the loop portion of the sheet whose leading end is abut against the shutter member moves the shutter member from the first attitude to the second attitude by a force pressing the loop abutting portion.
Abstract: A sheet feeding mechanism includes a main body, a rotator rotatable coupled to the main body and capable of rotating about an axis, two feeders configured to feed a sheet and a differential mechanism transmitting a rotation from the rotator to the two feeding rollers.
Abstract: A sheet conveying apparatus including: a sheet conveying unit; an upstream side guiding member that forms an upstream side conveying route of a sheet; a downstream side guiding member that forms a downstream side conveying route of the sheet; an upstream side detection unit; and a downstream side detection unit, wherein a detection position of the sheet for the upstream side detection unit is set between the sheet conveying unit and a position where the sheet is in contact with the upstream side guiding member, and a detection position of the sheet for the downstream side detection unit is set between the sheet conveying unit and a position where the sheet is in contact with the downstream side guiding member.
Abstract: A paper feeding module and multi-function printer using the same are provided. The multi-function printer includes a body, a paper transferring passage and a paper feeding module. The paper transferring passage includes an entrance. The paper feeding module includes a photoreceptor axle, a transferring axle and a skew correction axle. The photoreceptor axle is disposed on the paper transferring passage. The transferring axle is disposed next to the photoreceptor axle and contacts the photoreceptor axle. The skew correction axle is disposed between the entrance of the paper transferring passage and the photoreceptor axle. The skew correction axle contacts the transferring axle. The axes of the photoreceptor axle, the transferring axle and the skew correction axle are parallel to one another.
Type:
Application
Filed:
June 27, 2012
Publication date:
February 28, 2013
Applicants:
Kinpo Electronics, Inc., Cal-Comp Electronics & Communications Company Limited
Abstract: A roller main body including a roller core and a roller holder that supports the roller main body. The roller main body includes a boss protruding from each of both side surfaces of an end portion of the roller core, and a rib formed on each of the both side surfaces of the roller core, the roller holder includes a groove portion that detachably and rotatably supports the boss, and a recess that fixes the roller main body by locking the rib of the roller main body that rotates about the boss, the groove portion includes a rotation sliding contact portion that rotatably slides the boss, and a guiding path portion that guides the boss to the rotation sliding contact portion, and the guiding path portion is formed to have a width smaller than a maximum diameter of the boss.
Abstract: A transportation alignment device, a control method for a transportation alignment device, and a recording device determine the alignment of media having a transparent part with high transmittance at its leading end with a simple configuration, and prevent idling of processes downstream from the alignment member. A plurality of optical media detection sensors arranged across the width of the transportation path on the upstream side of the alignment plates each detect a medium touching the alignment plates. If all of the media detection sensors do not detect the medium when the medium has been advanced sufficiently to contact the alignment plate and align the medium, a medium, such as a laminated medium, having a high transmittance part at the leading end thereof is determined to be aligned, the alignment plate is retracted from the transportation path, and the medium is conveyed to the downstream side of the transportation path.
Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet-shaped recording medium; a registration roller pair to convey the recording medium to the image forming unit; a sheet feed roller to convey the recording medium to the registration roller pair; and a controller to control driving of the registration roller pair and the sheet feed roller. In such an image forming apparatus, the controller starts driving of the sheet feed roller to feed the recording medium and stops driving of the sheet feed roller before the sheet feed roller has completed conveyance of the recording medium for a distance equal to a length of the settable minimum-sized recording medium in the conveyance direction.
Type:
Application
Filed:
August 10, 2012
Publication date:
February 21, 2013
Applicant:
RICOH COMPANY, LTD.
Inventors:
Ikuo FUJII, Takamitsu IKEMATSU, Ippei KIMURA, Kaoru TADA
Abstract: A conveying apparatus includes a first pair of rollers having a drive roller and a pinch roller driven by the drive roller, a second pair of rollers provided downstream of the first pair of rollers, and an arm member supporting the drive roller and adapted to be swingable such that a force for pressing the drive roller against the pinch roller increases as a conveyance resistance of the sheet increases. The force for pressing the drive roller against the pinch roller decreases if driven by the moving sheet. The conveying speed of the second pair of rollers is set to be higher than the conveying speed of the drive roller so as to cause the drive roller to be driven by the sheet in the case where a skew of the sheet has been corrected and the sheet having the skew corrected is conveyed by the second pair of rollers.
Abstract: A sheet processing system capable of performing lateral shift correction of a sheet in an upstream sheet processing apparatus based on an amount of lateral shift to be caused by conveying thereof into a downstream sheet processing apparatus. A side edge sensor of a stacker detects a lateral shift amount of a sheet conveyed into the stacker. A stacker controller corrects lateral shift of the sheet by a shift unit. A side edge sensor of a finisher disposed downstream of the stacker detects a lateral shift amount of a sheet conveyed into the finisher. The finisher sends the detected lateral shift amount to the stacker. The stacker receives the lateral shift amount from the finisher, and the stacker controller corrects lateral shift of subsequent sheets based on both the lateral shift amount detected in the stacker and the lateral shift amount sent from the finisher.
Abstract: In an image-forming device the first sensor detects a recording sheet manually inserted from a manual sheet insertion opening. The sheet-skew correction roller is provided downstream side of the first sensor in the conveying direction. The controller is configured to control the sheet-skew correction roller to begin rotating if a stopping time has elapsed from a moment when the first sensor detects the recording sheet. The stopping time is initially set to a first stopping time. The controller is configured to function as a determining unit and a changing unit. The determining unit is configured to determine whether the recording sheet is properly conveyed. The changing unit is configured to change the stopping time to a second stopping time from the first stopping time if the determining unit determines that the recording sheet is not properly conveyed, the second stopping time being longer than the first stopping time.
Abstract: This paper feeder brings the uppermost paper sheet of a plurality of stacked paper sheets into contact with paper feed rollers and feeds out the paper sheet in a paper feeding direction by the drive thereof. Side fences for guiding both side edges of the paper sheet on a paper feeding table are provided with a pair of blowing units for blowing air to both side edges of the paper sheet, whose air quantity can be controlled independently of each other. When skewing occurs, the blowing units are controlled to blow a larger quantity of air to the paper side edge having larger friction against a lower paper sheet as compared with the quantity of air to the other paper side edge. In paper feeding, problems such as skewing, multi-feeding and idle feeding can be addressed.
Abstract: A device includes a conveying unit conveying a sheet, a guide, disposed downstream of the conveying unit in a conveying direction, guiding one side end of the conveyed sheet while being in contact with a side end, a feeding unit obliquely conveying the sheet closer to the guide, a pressing unit pressing the conveyed sheet in a direction in which the sheet moves away from the guide, and a control unit controlling the pressing unit and the feeding unit so that the feeding unit nips the pressed sheet to form a loop in the sheet between the conveying unit and the feeding unit and then conveys the sheet while the side end of the sheet is in sliding contact with the guide.
Abstract: A sheet feeding mechanism includes a main body, a rotator rotatable coupled to the main body and capable of rotating about an axis, two feeders configured to feed a sheet and a differential mechanism transmitting a rotation from the rotator to the two feeding rollers. The differential mechanism allows the two feeding rollers to rotate at different speeds in the case of any paper misalignment and thus to correct any skew of the sheet.
Abstract: An aspect of the invention provides a sheet conveying apparatus, an image forming apparatus, and an image reading apparatus, in which generation of skew feeding caused by the shock in pressure contact of a rotation body can be reduced. An interlocking mechanism brings a driven roller 222 biased by a biasing member into pressure contact with a feeding portion 221c of a driving roller 221 in conjunction with rotation of the driving roller 221. The driving roller 221 includes a non-feeding portion 221d in a circumferential surface thereof. The driven roller 222 is caused to abut on a pressure holder 225 before the driven roller 222 moved in a direction in which the interlocking mechanism brings the driven roller 222 into the pressure contact with the driving roller 221 is brought into the pressure contact with the driving roller 221.
Abstract: A mechanism for guiding a recording medium into a nip formed between a first rotary member subjected to heating, and a second rotary member pressed against the first rotary member includes a guide member and a biasing member. The guide member is disposed upstream from the nip to guide the recording medium therealong. The biasing member is connected to the guide member to mechanically bias the guide member. The guide member is subjected to a constant biasing force from the biasing member and to a pressure force from the recording medium. The pressure force is opposite the biasing force and variable with a stiffness of the recording medium being guided. The guide member is movable to different operational positions depending on the biasing and pressure forces acting thereon.
Abstract: The present invention provides a sheet conveying apparatus and an image forming apparatus capable of preventing occurrence of skew feeding when correcting sheet lateral deviation. A pair of lateral-shift correcting rollers 305 to correct positional deviation in the sheet width direction based on positional deviation quantity detected by a lateral-registration detection sensor 204c is controlled after controlling a skew feeding correcting roller 203 so as to correct sheet skew feeding based on skew-feeding quantity at a sheet leading edge detected by skew-feeding detection sensors 204a and 204b. Then, skew-feeding quantity of the sheet leading edge to be detected by the skew-feeding detection sensors 204a and 204b for correcting skew feeding of the next sheet is adjusted with skew-feeding quantity at the sheet trailing edge detected by the lateral-registration detection sensor 204c after positional deviation in the sheet width direction is corrected.
Abstract: A media sheet transport including a belt for supporting the media thereon. The belt is operably connected to a drive mechanism for moving the belt in a process direction past an image marking unit. The belt has a plurality of openings therein. A vacuum plenum has a surface disposed below the belt and is operably connected to a vacuum source. The vacuum plenum is adapted to applying a negative pressure to the media for holding the media to the belt. An electrostatic hold down apparatus includes a first tacking roller spaced in a cross-process direction from a second tacking roller. The first and second tacking rollers are engagable with the belt. The first tacking roller is disposed to engage the inboard edge of the media, and the second tacking roller is disposed to engage the outboard edge of the media. The first and second tacking rollers impart an electrostatic charge to the edges of the media for electrostatically securing the inboard and outboard edges of the media to the belt.
Abstract: A film feeding apparatus for a film scanner includes a bottom plate, a top plate formed with a slide slot and a feed-in hole, a movable plate movable between the bottom plate and the top plate, and an actuator member co-movable with the movable plate. The movable plate cooperates with the actuator member to constitute a sliding seat that is movable between a non-feeding position whereat the actuator member is disposed in an end of the slide slot such that the movable plate is misaligned from the feed-in hole in the top plate, and a feeding position whereat the actuator member is disposed in an opposite end of the slide slot such that the movable plate is aligned with the feed-in hole. When the sliding seat is moved from the non-feeding position to the feeding position, a film is pushed into the film scanner.
Abstract: A conveying roller conveys a sheet. A sheet holding portion receives a sheet from below and holds the received sheet with keeping its forward end upward and its rear end downward. The sheet holding portion has: a storing guide provided in a vertical state and having a guide surface configured to guide the received sheet upward; a conveying guide provided to face the guide surface and having a curved surface portion whose distance from the guide surface increases in the upward direction; and a holding member provided between the guide surface and the curved surface portion and configured to roll on the curved surface portion toward the guide surface to nip the received sheet with the guide surface. An inclination angle of the curved surface portion with respect to the guide surface decreases with distance from the guide surface.
Abstract: A sheet storage cassette can include a sheet supporting board and a restriction guide. The sheet supporting board can support at least one sheet thereon. The restriction guide can be arranged on the sheet supporting board and include a sheet holding surface that is substantially perpendicular to the sheet support board. The restriction guide can further include a mark indicated part at an upper side thereof, where the mark indicated part can extend at least partly along a plane that intersects a plane of the holding surface and can indicate a maximum storage capacity level of the sheet storage cassette.
Abstract: When the sheet (100) is mounted onto the conveyance surface (20), the alignment guide (3) is located at the retraction position by the alignment guide moving mechanism, and after the sheet (100) is mounted onto the conveyance surface (20), the alignment guide (3) is located at the guide position by the alignment guide moving mechanism.
Abstract: An image forming system includes an image forming unit, a feeding unit, a side edge reversal unit, a leading edge reversal unit, and a control unit, wherein, when there is a request for image formation on a bundle of sheets including a special sheet having a special part at an edge so that the edge is not straight and there is a request for image formation on both surfaces of the special sheet, the control unit controls the feeding unit, the image forming unit, the side edge reversal unit, the image forming unit to transport the special sheet having the image of the preceding page formed thereon to the downstream side after the front and back of the sheet are reversed by the leading edge reversal unit.
Abstract: A recording material transporting device includes a transport path along which a recording material is transported, a first transporting unit that includes a first rotating member and a second rotating member being arranged apart from each other in a direction crossing the transport path, the first transporting unit correcting skew of the recording material by rotating the first rotating member and the second rotating member in a different speed, and a second transporting unit that includes a third rotating member and a fourth rotating member being arranged apart from each other in the crossing direction, the second transporting unit correcting skew of the recording material by rotating the third rotating member and the fourth rotating member in a different speed, wherein the third rotating member and the fourth rotating member are arranged between the first rotating member and the second rotating member.
Abstract: A medium feeding device includes a medium feeding unit that feeds a medium placed in a set position, and a friction separation member that is disposed downstream of the medium feeding unit and is configured to come into contact with the underside of the medium, the friction separation member being deformable, and feed path restriction members that are arranged such that the friction separation member is located between the feed path restriction members, the contact portion of the feed path restriction member which comes into contact with the topside of the medium being located at a position lower than the upper surface of the friction separation member.
Abstract: An automatic teller machine (ATM) may include a medium transfer portion to transfer paper mediums from a paper medium storage portion storing the paper mediums, a carrier position adjustment portion rotatably mounted at a rear end of the carrier transfer portion, to which a medium carrier stacking and carrying the paper mediums transferred along the medium transfer portion is rotatably mounted, and a sheet roller portion rotatably mounted between the medium carrier and the carrier position adjustment portion to transfer the paper mediums on the medium transfer portion into the medium carrier by a rotational operation and to align the paper mediums stored in the medium carrier, wherein the sheet roller portion contacts the paper medium such that a greater frictional force is generated at a middle area than an outer area when transferring the paper mediums on the medium transfer portion into the medium carrier or when aligning the paper mediums stored in the medium carrier.
Abstract: An apparatus for aligning a media sheet includes a sheet feed system for transporting the media sheet along a media feed path in a media feed direction and an alignment assembly is positioned to intersect the media feed path. The alignment assembly includes a deflectable member having a plurality of sets of arms, each of the arms of each set has a contact surface defining a plane unique to each set of arms. The media sheet aligns as it exerts a media engagement force on the alignment assembly and causes the alignment assembly to deflect when the media engagement force exceeds the aligning force.
Type:
Grant
Filed:
September 23, 2011
Date of Patent:
November 13, 2012
Assignee:
Lexmark International, Inc.
Inventors:
Adam Thomas Manor, Richard Winston Thomas
Abstract: A method of advancing successive sheets of media by providing a gear and a pick roller configured to rotate independently between a first and a second relative orientation; advancing a first sheet at a first advance speed to an intermediate roller by driving the gear to rotate the pick roller with the gear and the pick roller oriented at the first relative orientation; advancing the first sheet at a greater advance speed by rotating the intermediate roller, thereby orienting the gear and the pick roller in the second relative orientation; advancing the first sheet until the pick roller is in contact with a second sheet; driving the gear while the pick roller remains stationary until the gear and the pick roller are oriented in the first relative orientation; and advancing the second sheet at the first advance speed by driving the gear to rotate the pick roller.
Type:
Application
Filed:
April 28, 2011
Publication date:
November 1, 2012
Inventors:
Alan Keng Aik Boo, Ang Beng Keong, Wai Yuen Lee
Abstract: A system (1) for directing sheet articles (2) in arrival from an input line (L1) towards two output lines has first gripping and drawing devices for gripping and drawing the sheet articles (2) for release in a directing region (37). The sheet articles are then deviated along a first (D1) or a second (D2) orientating direction. Second gripping and drawing devices move the sheet articles (2) along the direction region. First and second counter-rotating pairs of rollers face one another and grip the sheet articles to move them towards the second (5) and third (6) gripping and drawing devices, all the devices and rollers being arranged and operating with respect to one another such that during transit through the directing region (37) the advancing sheet articles (2) are subjected to constant gripping by at least one device or one pair of rollers.
Abstract: A sheet conveying apparatus includes a conveying roller which conveys a sheet, a cylindrical motor which drives the conveying roller, an outer diameter of the motor being approximately equal to or smaller than an outer diameter of the conveying roller, and a supporting portion which supports the motor such that a rotational center of the motor is arranged coaxially with a rotational center of a rotational shaft of the conveying roller the motor is positioned within a maximum sheet that can be conveyed by the conveying roller in a width direction perpendicular to the sheet conveying direction.
Abstract: An improved media rotator/translator apparatus includes a cylinder on sphere nip. A series of beveled/spur gears are included, one of which rotates co-axially but independent to the drive roll shafts. This enables the drive rolls to be driven about their own axis while simultaneously allowing for rotation about the roll shaft axis. A ball idler is positioned above each drive roll providing media normal force. Thus, sheet translation, jogging, and rotation is obtained, but with no relative motion, thereby eliminating marking of certain media.
Type:
Application
Filed:
February 18, 2011
Publication date:
August 23, 2012
Applicant:
XEROX CORPORATION
Inventors:
Matthew M. Storey, Adam D. Ledgerwood, Aaron M. Moore, Derek A. Bryl
Abstract: An improved rotator/translator mechanism includes multiple thin discs that mate with an idler roll to distribute nip pressure and spin at different rotational velocities to produce the same linear velocity at the nip and thereby reduce marking on certain media.
Type:
Application
Filed:
February 18, 2011
Publication date:
August 23, 2012
Applicant:
XEROX CORPORATION
Inventors:
Derek A. Bryl, Adam D. Ledgerwood, Aaron M. Moore, Matthew M. Storey
Abstract: The apparatus of the present invention is provided with: a spherical conveying rotation member that is driven to rotate in a desired direction; a driven rotation member disposed above the conveying rotation member so as to be pressed onto an upper portion of the conveying rotation member so that the driven rotation member nips a sheet in cooperation with the conveying rotation member to convey the sheet; two driving rollers press with the conveying rotation member so as to drive the conveying rotation member to rotate; and a driven roller that is made in press-contact with the conveying rotation member to be driven together therewith, and in this structure, the two driving rollers and the driven roller are disposed below the conveying rotation member so as to support the conveying rotation member by the two driving rollers and the driven roller from below.
Abstract: A diverter for receiving printed products in a single stream and diverting the printed products into a plurality of streams is provided. The diverter includes a first rotating body rotating about a first axis and including first, second and third circumferential sections positioned around the first axis. Each circumferential section of the first rotating body extends radially a different distance from the first axis. The diverter also includes a second rotating body rotating about a second axis and including first, second and third circumferential sections positioned around the second axis. Each circumferential section of the second rotating body extends radially a different distance from the second axis. The first and second rotating bodies divert the printed products into three separate streams at a diverting area between the first and second axes. The diverter also includes a steeple positioned downstream of the diverting area.
Type:
Application
Filed:
February 8, 2011
Publication date:
August 9, 2012
Applicant:
Goss International Americas, Inc.
Inventors:
John J. DOWLING, David Clarke POLLOCK, David Elliot WHITTEN
Abstract: According to one embodiment, a sheet conveying apparatus includes: a guide section that forms a one side guide surface of a sheet conveying path, the guide section having a first guide member and a second guide member which are continuously arranged from a conveying direction upstream side to a conveying direction downstream side, at least one of the first guide member and the second guide member being a guide member that rotates to open and close; and a joint section that forms an uneven joint with a conveying direction downstream side end of the first guide member and a conveying direction upstream side end of the second guide member, the downstream side end of the first guide member being arranged further on an inner side than the upstream side end of the second guide member with respect to the sheet conveying path if at least one of the first guide member and the second guide member is closed.
Abstract: A sheet conveying apparatus has a conveyance portion configured to convey a sheet along a conveyance path; a skew-feed correction member positioned in the conveyance path such that a leading edge of the sheet conveyed by the conveyance portion contacts the skew-feed correction member to correct a skew-feed of the sheet; a receiving portion configured to receive information indicative of the width of the conveyed sheet, the width being in a direction orthogonal to a sheet conveyance direction; and a control portion configured to adjust a skew-correction conveyance amount of the conveyance portion applied to correct the skew-feed of the sheet by the skew-feed correction member. The skew-correction conveyance amount is adjusted on information which the receiving portion receives such that the skew-correction conveyance amount is set to be larger for a sheet of smaller width compared to a sheet of greater width.
Abstract: Provided is a device for the alignment of sheets in a printing machine, said device comprising two pairs of rollers for the alignment of the sheets in their advance direction, for the alignment transverse to their advance direction and with respect to skewing, whereby each pair of rollers consists of a driving roller and of a counter-pressure roller. One drive unit is provided for each of the two driving rollers, whereby each of the drive units consists of a motor and a drive shaft linked therewith, whereby the driving rollers are non-torsionally accommodated on respective drive shafts. The driving rollers can be slid in linear direction on their drive shaft, or the respective drive shafts, and thus the driving rollers accommodated thereon, can be linearly shifted with respect to their drive motors.
Type:
Grant
Filed:
September 17, 2007
Date of Patent:
July 10, 2012
Assignee:
Eastman Kodak Company
Inventors:
Thomas Jacobsen, Juergen Sahlmann, Bernhard A. Linke, Rolf Spilz, Christoph J. Ochmann, Joerg V. Malottki
Abstract: A stapler system for an image forming apparatus according to one example embodiment includes a housing and a mounting device for mounting the housing to the image forming apparatus. A staple head is positioned within the housing for stapling media. A media sheet path is disposed within the housing for directing media received from the image forming apparatus to the staple head for stapling. When the housing is mounted on the image forming apparatus, a portion of the housing extends above an output bin of the image forming apparatus to permit delivery of stapled media from the housing to the output bin of the image forming apparatus.
Abstract: A sheet conveyance device comprises first and second sheet parallel conveyance paths each having first and second conveyance roller units each to receive and convey a sheet and first and second skew correctors each to correct skew of a sheet therein. A third conveyance path is disposed downstream of the first sheet conveyance path and the second sheet conveyance path, in which those sheet conveyance paths flow into each other. The sheet conveyance device alternately conveys the sheet to first sheet conveyance path and the second sheet conveyance path. One of the first pair of sheet conveyance rollers is one of the second pair of sheet conveyance rollers as a common roller.
Abstract: A printing device includes: a registration roller that once stops a transferred sheet and then feeds the transferred sheet toward an inkjet head unit; a sheet feed system that transfers and feeds a sheet to the registration roller; a sheet refeed system that, during both-side printing, reverses a one-side printed sheet and transfers the one-side printed sheet to the registration roller; and a controller that, during both-side printing, controls the registration roller so as to feed a sheet, which is fed by the sheet feed system and the sheet refeed system, toward the inkjet head unit in accordance with a predetermined print schedule. The controller controls the sheet feed system in accordance with the print schedule so that a speed when a sheet fed from the sheet feed system is abutted against the inkjet head unit becomes lower during both-side printing than during one-side printing.
Abstract: An information processing device includes an opening and closing member that is configured to be movable between open and closed positions, and an interference member that is positioned in a middle of an opening and closing trajectory of the opening and closing member. The opening and closing member takes the open position after the opening and closing member moves in a direction away from the interference member and takes the closed position after the opening and closing member moves in a direction toward the interference member.
Abstract: An automatic document feeder includes a feeder casing, a pressing structure, a guiding notch, plural first guiding ribs and plural second guiding ribs. The pressing structure is disposed on a bottom part of the feeder casing. The guiding notch is formed in the pressing structure. The first guiding ribs are arranged downstream of the guiding notch. The second guiding ribs are arranged beside the first guiding ribs. The height of the first guiding rib is smaller than the height of the second guiding rib. The lower first guiding ribs are used for guiding a thicker paper. The higher second guiding ribs are used for guiding a thinner paper.
Abstract: The skew-feeding correcting apparatus of the present invention includes an abutment portion which is disposed to a conveying path to convey a sheet and to which a top end of the sheet is abutted to correct skew feeding of the sheet, a movement portion which moves the abutment portion in a sheet width direction perpendicular to a sheet conveyance direction, and a controller which controls driving of the movement portion to move the abutment portion to a position where a corner part of the sheet is not to be abutted to the abutment portion before the top end of the sheet is abutted to the abutment portion.
Abstract: A sheet skew-correcting device includes a sheet-conveying rotation body for conveying a sheet, a skew-correcting member that contacts an end of the sheet conveyed by the sheet-conveying rotation body for correcting skew of the sheet, and a driving unit for moving the skew-correcting member. The skew-correcting member moved in a sheet-conveying direction by the driving unit contacts the end of the sheet conveyed in the sheet-conveying direction by the sheet-conveying rotation body, so as to correct the skew of the sheet.
Abstract: An image forming apparatus having a structure to prevent print defects caused by residual paper. The image forming apparatus includes a main body, a paper feeding cassette separably mounted to the main body, a pickup member to pick up paper from the paper feeding cassette, and a paper separating member including a plurality of links to apply pressure to the pickup member when the paper feeding cassette is mounted to the main body and to release the pressure applied to the pickup member when the paper feeding cassette is separated from the main body. The paper separating member includes a first link to be pressed by the paper feeding cassette, a second link provided with a separating unit to press the pickup member, and an elastic member between the first link and the second link to allow the first link to press the second link.
Abstract: A sheet de-curling mechanism includes a passageway, a first roller and a second roller. The first roller, disposed in the passageway, transports a sheet at a first speed in a transporting direction. The second roller, disposed downstream of the first roller, transports the sheet at a second speed greater than the first speed, to stretch and flatten the sheet. A printing apparatus using the sheet de-curling mechanism is also provided.
Abstract: A sheet transport device includes: a registration roller pair that includes a first roller and a second roller lower in abrasion resistance than the first roller, and nips and transports a recording medium; and a drive mechanism that provides a rotation to the first roller to rotate at the first circumferential speed, and provides a rotation to the second roller to rotate at the second circumferential speed different from the first circumferential speed.
Abstract: A print device for registering a printable medium during a duplex printing process. The print device includes a controller, at least one leading edge sensor operably connected to the controller, the at least one leading edge sensor configured to detect a leading edge of a printable medium having a first and a second side when the first side is facing away from the at least one leading edge sensor, a coarse registration sensor operably connected to the controller, the coarse registration sensor configured to detect a leading edge of the printable medium when the second side of the printable medium is facing away from the at least one leading edge sensor, and at least one trail edge sensor operably connected to the controller, the at least one trail edge sensor configured to detect a trailing edge of the printable medium.
Type:
Grant
Filed:
April 30, 2009
Date of Patent:
May 15, 2012
Assignee:
Xerox Corporation
Inventors:
Paul N. Richards, Lloyd A. Williams, Joannes N. M. deJong, Matthew Dondiego
Abstract: A sheet ejection device capable of applying shift processing to the sheets on an ejection tray, using the alignment member contacting the sheets at a plurality of points in the direction in which the sheets are ejected.
Type:
Grant
Filed:
May 22, 2009
Date of Patent:
May 15, 2012
Assignee:
Konica Minolta Business Technologies, Inc.