| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 271228000 | To control gripper-couple moving sheet to alignment | 67 |
| 20080237975 | Method and system for determining improved correction profiles for sheet registration - The presently described embodiments are directed to a method and system for improving sheet registration in a document processing device. The presently described embodiments implement a technique the produces accurate results with merely a small tail wag. To do so, the method ultimately establishes or determines a variety of parameters (e.g. lateral position of a sheet, skew, registration time, nominal sheet velocity, and correction velocity). These parameters are then used by the system to calculate a lateral velocity profile. In this regard, the calculated velocity profiles are applied to the wheels or nips, in the paper path. Thus, the wheels can be controlled and will allow for improved sheet registration in the document processing device. | 10-02-2008 |
| 20080265497 | SHEET FEEDING DEVICE AND SKEW DETECTING METHOD - A plurality of moving-amount detecting units respectively detects a moving amount of the sheet fed by a feeding unit at a plurality of points in a width direction of the sheet. A skew detecting unit detects a skew of the sheet based on the moving amount of the sheet detected by the moving-amount detecting units. | 10-30-2008 |
| 20090033027 | Drive conntrol method and apparatus for sheet processing machine - A drive control method for a sheet processing machine includes the steps of operating a driving motor of a sheet feed device which feeds a sheet to a sheet processing device that processes the sheet, in synchronism with a rotary member of the sheet processing device, and adjusting a rotary phase of the rotary member of the sheet processing device and a rotary phase of the driving motor of the sheet feed device relative to each other. A drive control apparatus is also disclosed. | 02-05-2009 |
| 20090051105 | Sheet separating apparatus and method - A sheet separating mechanism and a method of separating sheets is provided to prevent the multifeeding of sheets into printers or copiers. The sheet separating mechanism provides a first nip and a second nip for feeding a series of sheets therebetween. The first nip can include a first motor and the second nip can include a second motor for feeding a leading sheet from the first nip to the second nip. The mechanism further provides a first sensor for sensing a trailing edge of the leading sheet and a second sensor for sensing a leading edge of the leading sheet. The first sensor is upstream of the first motor and the second sensor is downstream of the second motor. A trailing sheet can be prevented from feeding with the leading sheet by stopping the first motor when the leading edge of the leading sheet is sensed by the second sensor while simultaneously the first sensor remains occluded. | 02-26-2009 |
| 20090057994 | SHEET CARRYING DEVICE AND SHEET CARRYING METHOD - A technique is provided that can realize highly accurate skew correction without employing any particularly complicated device configuration. The quantity of skew of a sheet is determined in accordance with a detection result from a first pair of sensors. Driving of each of first rollers and second rollers is separately controlled to carry the sheet in such a manner as to reduce the quantity of skew determined in accordance with the detection result from the first pair of sensors. The quantity of skew of the sheet is determined in accordance with a detection result from a second pair of sensors. Driving of each of the first rollers and the second rollers is separately controlled to carry the sheet in such a manner as to reduce the quantity of skew determined in accordance with the detection result from the second pair of sensors. | 03-05-2009 |
| 20090096155 | Alignment of Media Sheets In An Image Forming Device - The present application is directed to methods and devices for aligning a media sheet in a media feed path of an image forming device. One embodiment includes a drive shaft with skew correction rollers spaced apart on the drive shaft. The media sheet contacts a first skew correction roller and then contacts a second skew correction roller. The drive shaft is then rotated, driving the second skew correction roller and aligning the media sheet to the media feed path. | 04-16-2009 |
| 20090121419 | SKEW ADJUSTMENT OF PRINT SHEETS - Systems and methods for reducing sheet skew in a document processing device are disclosed. A document processing device may include a plurality of nips, a sheet skew measurement system, a feedback controller and an actuator. Each nip may include an idler wheel and a drive wheel. The sheet skew measurement system may be configured to measure sheet skew for a sheet. The feedback controller may be configured to generate a control signal in response to the sheet skew measured by the sheet skew measurement system. The actuator may be configured to adjust a loading force applied to a sheet by an idler wheel for at least one nip in response to the control signal. | 05-14-2009 |
| 20090152806 | SHEET LATERAL POSITIONING DEVICE - An apparatus for registering a sheet along a transport path, including a plurality of spaced apart sheet feeding nip sets of plural sheet feeding nips in the sheet transport path, the plural sheet feeding nips of the sheet feeding nip sets comprise plural drive wheels and plural mating idlers, steerable drive mechanism for changing the drive wheel to idler alignment to thereby transport the sheet along the paper path while imparting a lateral motion to the sheet as it is transported along the paper path. | 06-18-2009 |
| 20090194936 | METHOD AND APPARATUS FOR RELIEVING STRESS IN A PRE-REGISTRATION NIP - A method of using a buckle for relieving the stresses in sheets caused by differential displacements of drive nips during the registration process includes creating a buckle between pre-registration nips and registration nips. The velocities of the pre-registration nips and registration nips are closely controlled so that the magnitude of buckle between them is large enough to relieve the stresses in the sheet during the registration process, yet small enough to not interfere with the registration process. | 08-06-2009 |
| 20090278305 | IMAGE FORMING APPARATUS - An image forming apparatus has a sheet feeding portion feeding a sheet; a conveyance passage for conveying the sheet inside the apparatus; an image forming portion forming an image on the sheet; a skewing detector disposed in the conveyance passage between the sheet feeding portion and the image forming portion, detecting arrival and departure of the sheet, and detecting skewing amount of the sheet in the conveyance passage; a display portion displaying an apparatus state; a storage portion storing data; and a control portion controlling sheet feeding and conveying, and grasping the sheet skewing amount based on the output of the skewing detector to stop printing when the skewing amount is at or above a first predetermined amount stored in the storage portion. | 11-12-2009 |
| 20090295076 | SHEET CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A sheet conveying device which has a reduced size and is capable of detecting the amount of lateral sheet registration deviation and correcting the deviation at high speed. The sheet conveying device includes shift roller pairs for conveying sheets, and a shift unit for shifting a conveyed sheet in a direction orthogonal to a sheet conveying direction. After the sheet has reached a position where it is to be detected by a lateral registration deviation-detecting sensor unit, a CPU causes the sensor unit and the sheet to be shifted in respective opposite directions, detect a sheet lateral edge, and thereby measure the position of the sheet lateral edge. Further, the CPU causes the sheet to be shifted based on a result of the measurement, such that the sheet lateral edge is aligned with a predetermined position. | 12-03-2009 |
| 20100007082 | APPARATUS FOR FEEDING AND ALIGNING SHEETS FED TO A PROCESSING MACHINE, IN PARTICULAR A PRINTING MACHINE - An apparatus for feeding and aligning sheets which are fed to a processing machine, e.g. a printing machine, includes at least two parallel transporting belts which, on a side directed toward the sheet, subject the sheet to different retaining forces, in such a way that the retaining force in outer peripheral regions is greater than in an inner region located therebetween. The transporting belts can be activated individually in dependence on the position of the sheet, and they can therefore align the sheet in its transporting direction and obliquely thereto. | 01-14-2010 |
| 20100013149 | SHEET CONVEYING APPARATUS AND SHEET CONVEYING METHOD - To provide a sheet conveying technique that can realize highly accurate skew correction with an inexpensive and simple apparatus configuration. A sheet conveying apparatus includes: first and second rollers that are arranged in positions different from each other in a direction orthogonal to a sheet conveying direction and can be driven to rotate independently from each other; a first skew detecting unit that is arranged on an upstream side or a downstream side of the first and second rollers in the sheet conveying direction and detects skew of a sheet at first skew detection accuracy; and a second skew detecting unit that is arranged further on the downstream side than the first skew detecting unit in the sheet conveying direction and detects skew of the sheet at second skew detection accuracy higher than the first skew detection accuracy. A skew amount of the sheet is determined on the basis of detection results of the respective first and second skew detecting units. To reduce the determined skew amount, the first and second rollers are driven to rotate independently from each other and convey the sheet. | 01-21-2010 |
| 20100072694 | METHOD AND APPARATUS FOR LATERALLY ALIGNING A SHEET IN A PROCESSING MACHINE AND SHEET-FED PRINTING MACHINE HAVING THE APPARATUS - A method and an apparatus for laterally aligning a sheet in a processing machine, in particular a printing machine, carries out lateral sheet alignment on a cylinder of the printing machine, e.g. a feed cylinder. In order to achieve large correction distances in relation to a possible lateral movement capability of a gripper bar, the latter is prealigned prior to correction in such a way that, in the event of deviation from predetermined desired values, it is prealigned laterally to defined positions. A sheet-fed rotary printing machine having the apparatus, is also provided. | 03-25-2010 |
| 20100207322 | SHEET CONVEYING APPARATUS EXECUTING ORIENTATION CORRECTION - In a sheet conveying apparatus a first shape information that expresses at least a part of the outer shape of a sheet. An obtaining unit obtains second shape information that expresses at least the part of the outer shape of the sheet. A correction amount computing unit computes a correction amount of the sheet for correcting an image to be formed on the sheet and/or correcting the position and/or orientation of the sheet based on the first shape information and the second shape information. A correction amount computing unit computes a correction amount for correcting the position and/or orientation of the sheet relative to the conveying direction from the computed skew amount. A position and/or orientation correction unit corrects an image to be formed on the sheet and/or the position and/or orientation of the sheet, according to the computed correction amount. | 08-19-2010 |
| 20100276872 | EARLY CARRIAGE RESET MOVE FOR LATERALLY MOVABLE REGISTRATION DEVICE - A method and system feeds a sheet through a media path in a process direction. When the sheet is within a sheet registration carriage of the media path, the method and system align the sheet to a predetermined lateral position within the media path. The aligning process comprises unevenly activating nips within the sheet registration carriage and moving the sheet registration carriage in a lateral direction perpendicular to the process direction. When the sheet is within the sheet registration carriage, the method and system determine a lateral movement distance the sheet registration carriage will move in the lateral direction during the aligning of the sheet. If the lateral movement distance exceeds a predetermined distance, the method and system move the sheet registration carriage toward the starting position after the nips have released the sheet, but before the sheet has passed by the nips. If the lateral movement distance does not exceed the predetermined distance, the method and system delay moving the sheet registration carriage toward the starting position until after the sheet has passed by the nips. | 11-04-2010 |
| 20100301545 | Accurate Sheet Leading Edge Registration System and Method - Accurate sheet leading edge registration system and method including a first and second nip assembly, a first sheet leading edge sensor and a controller. The first and second nip assemblies being spaced apart from one another. The first sheet leading edge sensor capable of detecting an arrival of a leading edge of a sheet at a point in the process direction. The arrival being associated with engagement of the first and second nip assemblies with the sheet. The controller capable of imparting a rotational skew velocity to the sheet using the first and second nip assemblies. A center of rotation of the skew velocity being offset laterally from a center of the sheet leading edge. The method includes providing at least the above-mentioned nip assemblies, first sheet leading edge sensor and controller. | 12-02-2010 |
| 20110018193 | Extended Registration Control of a Sheet in a Media Handling Assembly - An apparatus for registering a sheet. The apparatus including a sheet registration nip assembly for changing a position and/or timing of the sheet. The apparatus also including a controller communicating a first signal to the sheet registration nip assembly to change a first sheet characteristic to a target characteristic. The first signal generated to impart the target characteristic to the sheet by the time the sheet reaches a preliminary datum. The preliminary datum disposed along the transport path between the sheet registration nip assembly and a delivery datum that is disposed downstream of the sheet registration nip assembly. The controller communicating a second signal to the sheet registration nip assembly to change a second sheet characteristic to the target characteristic. The second signal communicated when at least a portion of the sheet is disposed along the transport path between the preliminary datum and the delivery datum. | 01-27-2011 |
| 20110084443 | SHEET CONVEYING DEVICE, IMAGE FORMING APPARATUS, AND METHOD OF DETECTING DOUBLE-FEED OF SHEET - According to an embodiment, a sheet conveying device includes: a first roller configured to correct a tilt of a sheet to be conveyed; a first detecting unit located further on an upstream side in a conveying direction of the sheet than the first roller and configured to detect information concerning double-feed of the sheet; a second roller configured to convey the sheet to the first roller; a driving unit configured to drive the second roller; and a controller configured to control the driving unit to thereby temporarily stop the conveyance of the sheet in order to perform the detection by the first detecting unit in a state in which an end of the sheet on a downstream side in the conveying direction of the sheet is located further on the upstream side in the conveying direction of the sheet than a nip position of the first roller. | 04-14-2011 |
| 20110115154 | Recording medium conveyer capable of effectively conveying recording medium of various types - In a recording medium conveyer, a driver drives a feeding member and a conveying member provided downstream from the feeding member in a recording medium conveyance direction independently. A controller stops driving the feeding member when a first time period elapses after a recording medium reaches the conveying member. When a selector judges that the thickness of the recording medium identifies the recording medium as thin paper, the controller does not drive the feeding member after the controller starts driving the conveying member, and when the selector judges that the recording medium has a thickness greater than a thickness of the recording medium that identifies the recording medium as thin paper, the controller restarts driving the feeding member no later than when the controller starts driving the conveying member. | 05-19-2011 |
| 20110133396 | EDGE SENSOR CALIBRATION FOR PRINTMAKING DEVICES - According to aspects illustrated herein, there is provided a printmaking device, a method, and a system for calibrating sensors. The printmaking device includes a calibration system with a media path, a registration device, and at least one edge sensor. The registration device having a pair of nips connected by a lateral carriage and a calibration member disposed traversely and affixed to the lateral carriage. The lateral carriage is configured to move laterally relative to the media path. The at least one edge sensor may be configured to determine an extent of movement of a first portion of the calibration member. The registration device calibrates the at least one edge sensor by: moving the lateral carriage a predetermined distance; determining the extent of movement of the first portion of the calibration member; and comparing the predetermined distance and the extent of movement so as to determine the calibration factor. | 06-09-2011 |
| 20110148033 | SHEET REGISTRATION USING EDGE SENSORS - Accurate sheet registration is achieved by measuring the arrival of a leading edge and/or a trailing edge of the sheet using a first sensor. Also, measuring a first position of the sheet using a second sensor on a lateral edge of the sheet. Then performing a first adjustment moving the sheet laterally using the first position measurement. The first adjustment actuated prior to the sheet reaching a third sensor for measuring a second position of the sheet. The third sensor disposed downstream in the process direction of the second sensor and a sheet feeding nip. Then measuring a second position of the sheet using the third sensor on the lateral edge and performing a second adjustment of the sheet with regard to at least one of sheet skew, sheet velocity and sheet lateral position using at least one of the arrival, first position and second position measurements. | 06-23-2011 |
| 20110156345 | CLOSED LOOP LATERAL AND SKEW CONTROL - According to aspects illustrated herein, a method, a system, and a printmaking device for performing closed loop lateral and skew control of a sheet is provided. The printmaking device includes a feed path, printing module, and sheet registration system. First, the feed path moves the sheet in a process direction past the lateral sensor. Next, the sheet is registered by measuring a lateral position of one side edge of the sheet at a fixed reference using the lateral sensor and determining a lateral position error of the sheet using the lateral position measurement. After that, a sheet angular velocity is calculated based on the lateral position error using the registration controller. Then, the lateral position error is corrected using the at least one pair of registration nips to adjust the sheet by applying the sheet angular velocity to the sheet. | 06-30-2011 |
| 20110163494 | Device For Horizontally Rotating Flat Articles Supplied Along A Transport Line - The device ( | 07-07-2011 |
| 20110193286 | DEVICE AND METHOD FOR THE ALIGNMENT OF SHEETS - For a device for the alignment of sheets, which comprises at least one first and one second driving roller ( | 08-11-2011 |
| 20110210500 | SHEET CONVEYING DEVICE AND RECORDING APPARATUS - 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. | 09-01-2011 |
| 20110215524 | MEDIUM PROCESSING APPARATUS AND METHOD - A medium processing apparatus which corrects the tilt of a medium is provided. The medium processing apparatus according to one embodiment of the present disclosure includes a conveyer configured to convey a medium along a conveying path, and a shutter located along the conveying path to block the conveyance of the medium. The medium processing apparatus further includes a detector configured to detect a tilt of the medium with respect to the shutter, and a shutter controller configured to control the shutter to unblock the conveyance of the medium when the detector determines that the tilt of the medium is corrected. | 09-08-2011 |
| 20110266742 | SHEET CONVEYANCE APPARATUS AND RECORDING APPARATUS - An apparatus includes a first conveyance unit configured to convey a sheet, a first guide located downstream of the first conveyance unit in a conveyance direction and configured to guide a first side end of the conveyed sheet, a skew unit configured to convey the sheet in an oblique direction to come closer to the first guide, a second guide configured to contact a second side end opposite the first side end to guide the second side end, a second conveyance unit located downstream of the first guide in the conveyance direction, and a control unit configured to perform control so that, after conveying the sheet by the skew unit with the first guide contacting the first side end while the second guide is separated from the second side end, the second guide moves to a position close to the second side end. | 11-03-2011 |
| 20110291352 | Accurate Sheet Leading Edge Registration - Accurate sheet leading edge registration system and method including a first and second nip assembly, a first sheet leading edge sensor and a controller. The first and second nip assemblies being spaced apart from one another. The first sheet leading edge sensor capable of detecting an arrival of a leading edge of a sheet at a point in the process direction. The arrival being associated with engagement of the first and second nip assemblies with the sheet. The controller capable of imparting a rotational skew velocity to the sheet using the first and second nip assemblies. A center of rotation of the skew velocity being offset laterally from a center of the sheet leading edge and being coincident with a lateral position of a virtual point, the virtual point lateral position being offset from a lateral position of the first sheet leading edge sensor. | 12-01-2011 |
| 20120013067 | Adjustable Idler Rollers for Lateral Registration - An assembly including two nip assemblies spaced apart along a first axis. Each nip assembly including a driven wheel and an idler roller. The driven wheel rotatably supported about the first axis. The idler cooperating with the driven wheel to engage a sheet. The idler rotatably supported about a second axis. The second axis being selectively moveable relative to the first axis. The selective movement between a first and second orientation while the sheet is moved along the transport path. In the first orientation the second axis extends parallel to the first axis. In the second orientation the second axis extends at an oblique angle to the first axis. The selective movement pivoting about a third axis extending through a centerline common to both the driven wheel and the idler. The selective movement of one of the two nip assemblies being independent from the selective movement of the other. | 01-19-2012 |
| 20120080838 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus including: a conveying roller pair conveying a sheet by a nip portion; a shutter portion which is rotatably supported on a rotary shaft of the first conveying roller; a same radius portion, provided in the shutter portion, which is formed to have substantially the same radius as a radius of the first conveying roller; an abutment portion, provided in the shutter portion, and against which the leading edge of the sheet is abutted; and a boundary portion, provided in a boundary of the abutment portion and the same radius portion, which guides the leading edge of the sheet to the nip portion when the shutter portion is rotated by abutting the leading edge of the sheet against the boundary portion. | 04-05-2012 |
| 20120181743 | SHEET TRANSPORT DEVICE, SHEET TRANSPORT CONTROL METHOD, AND PRINTER - According to one aspect of the embodiment, a sheet transport device includes a detecting unit configured to detect skew with respect to a transport direction of a sheet that is supplied, a transport unit configured to transport the sheet using a plurality of transport members disposed on the right and on the left at different intervals from an upstream side toward a downstream side in the transport direction and a control unit configured to cause rotation velocities of transport members on the right among the plurality of transport members to be different from rotation velocities of transport members on the left among the plurality of transport members in accordance with the skew of the sheet detected by the detecting unit. | 07-19-2012 |
| 20120235350 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus, including: a first conveying portion; a second conveying portion arranged downstream of the first conveying portion; a shutter member rotated by the pressure of the sheet and including a plurality of abutment surfaces against which a leading edge of the sheet conveyed by the first conveying portion abuts to correct a skew feed of the sheet; and an urging portion which provides the shutter member with an urging force for positioning one abutment surface at an abutment position at which the leading edge of the sheet abuts against the one abutment surface, the urging portion providing the shutter member with an urging force for rotating the shutter member to position another abutment surface at the abutment position after the leading edge of the sheet is nipped by the second conveying portion. | 09-20-2012 |
| 20120242036 | PAPER TRANSPORT DEVICE, DOCUMENT READING APPARATUS PROVIDED WITH THE SAME, AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - A first resist roller ( | 09-27-2012 |
| 20120242037 | SHEET CONVEYANCE APPARATUS AND PRINTING APPARATUS - A sheet conveyance apparatus includes: a guide unit for guiding the side end of the sheet; a first roller pair arranged on the downstream side of the guide unit for conveying the sheet, including a driven roller held in contact with a whole sheet in a sheet width direction; and a second roller pair having a conveyance roller arranged on the downstream side of the roller and adapted to convey the sheet, and a plurality of pinch rollers pinching the sheet in cooperation with the conveyance roller, wherein each of the plurality of pinch rollers applies to the sheet a conveyance force inclined toward a conveyance path side end, which is nearer to the pinch roller, and wherein the smaller the distance between the pinch roller and the conveyance path side end, the greater the inclination of the conveyance force thereof. | 09-27-2012 |
| 20120280447 | CLAMPING DEVICE AND PRINTER | 11-08-2012 |
| 20120286468 | TRANSPORTING DEVICE AND IMAGE FORMING APPARATUS USING THE SAME - A transporting device includes steering rollers, a center roller which is disposed between the steering rollers and deflection-detecting sensors that are positioned downstream from the steering rollers. When a sheet of paper has a width which is narrower than a width of a reference sheet of paper, the positional deflection of the sheet of paper is corrected by transporting the sheet of paper to a shift roller with the sheet of paper being nipped by the center roller and thrusting a forward end of the sheet of paper against a shift roller. When a sheet of paper has a width which exceeds the width of the reference sheet of paper, the positional deflection of the sheet of paper is corrected by rotating the steering rollers separately based on a detected result of the sensors with the sheet of paper being nipped by the steering rollers. | 11-15-2012 |
| 20130015621 | AUTOMATIC DOCUMENT FEEDERAANM Doan; Long C.AACI San DiegoAAST CAAACO USAAGP Doan; Long C. San Diego CA USAANM Natalaray; ThaddieAACI SingaporeAACO SGAAGP Natalaray; Thaddie Singapore SGAANM Maung; Kyi ThuAACI SingaporeAACO SGAAGP Maung; Kyi Thu Singapore SGAANM Madsen; Jeffrey C.AACI EagleAAST IDAACO USAAGP Madsen; Jeffrey C. Eagle ID USAANM Albritton-McDonald; JimAACI WindsorAAST COAACO USAAGP Albritton-McDonald; Jim Windsor CO USAANM Goh; JeoffreyAACI SingaporeAACO SGAAGP Goh; Jeoffrey Singapore SGAANM Teoh; Hin PengAACI SingaporeAACO SGAAGP Teoh; Hin Peng Singapore SGAANM Behrend; Curtis J.AACI San DiegoAAST CAAACO USAAGP Behrend; Curtis J. San Diego CA USAANM Ng; Keng LeongAACI SingaporeAACO SGAAGP Ng; Keng Leong Singapore SG - An automatic document feeding device including a pick motor coupled with a pick assembly, a deskew motor coupled with a deskew assembly, a sensor assembly coupled with a main media path and the deskew motor, and a feed motor coupled with a feed assembly. The deskew motor drives the deskew assembly, the deskew assembly deskewing the media sheet and moving the media sheet from the pick assembly to the feed assembly, the deskew assembly moving independently of the pick assembly and the feed assembly. The sensor assembly includes a plurality of sensors. The sensor assembly senses the media sheet moving along the main media path and sends at least one signal to a computer. The computer, based on the at least one signal, sends, an activation signal to at least one of the pick, deskew and feed motors and the first scanner. | 01-17-2013 |
| 20130032995 | APPARATUS TO ALIGN MEDIA - A medium alignment apparatus may include an alignment body to form a transfer path is formed for passage of a medium and include an alignment reference surface for alignment of the medium is formed, an alignment roller portion mounted to the alignment body to align the medium while driving the medium simultaneously, and at least one alignment sensor portion to detect whether the medium is aligned by detecting a position of the medium passing along the transfer path. The alignment body may include a first body forming a transfer path for the medium, to which the alignment roller portion is mounted, and a second body disposed at one side of the first body to be movable relative to the first body at a speed corresponding to a transfer speed of the medium, providing a side directed to the first body as the alignment reference surface. | 02-07-2013 |
| 20130043648 | CONVEYING APPARATUS AND RECORDING APPARATUS - A conveying apparatus including a conveying path with a curved path through which a sheet is passed, a main conveying roller provided downstream of the conveying path in a conveying direction of the sheet, the roller being rotated in a first direction to perform a conveying operation of conveying the sheet in the conveying direction and being rotated in a second direction opposite to the first direction to perform an skew correcting operation of forming a loop of the sheet, and an auxiliary guide member which supports the sheet using an inner side of a curvature of the conveying path and which is tilted toward the conveying direction side during the conveying operation when subjected to a force of the sheet which is stronger than during the skew correcting operation. | 02-21-2013 |
| 20130056926 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - Disclosed is a sheet conveying apparatus including a skew correction apparatus of a sheet which prevents the sheet from encroaching on a nip portion of a registration roller by backward rotation of the registration roller and also controls the backward rotation of the registration roller to the minimum so as to prevent the curling the sheet. | 03-07-2013 |
| 20130082440 | IMAGE READING DEVICE CAPABLE OF READING SKEW SHEET - An image reading device includes a sheet tray, a conveying unit, a reading unit, a detecting unit, and a control unit. The conveying unit conveys the sheet along a conveying path in a conveying direction. The reading unit reads the sheet at a reading position in a main scanning direction orthogonal to the conveying direction. The control unit controls the reading unit to start reading the sheet when the detection unit detects that a leading edge of a sheet reaches a position upstream of the reading position by a first distance. The control unit controls the reading unit to stop reading the sheet when the detection unit detects that a trailing edge of the sheet reaches a position downstream of the reading position by a second distance. The first distance and the second distance are determined according to the size of the sheet. | 04-04-2013 |
| 20130134663 | SKEW CORRECTING DEVICE AND IMAGE FORMING APPARATUS - A skew correcting device includes a first roller pair configured to nip and convey a sheet; a second roller pair disposed upstream of the first roller pair and configured to nip and convey the sheet; a contact portion disposed downstream of the first roller pair, the contact portion being a portion that the leading edge of the conveyed sheet comes into contact to correct skew of the sheet; a switching mechanism configured to change a nipping force of the first roller pair before the leading edge of the conveyed sheet comes into contact with the contact portion to form a loop in the sheet; and a control unit configured to make a determination on the basis of sheet information as to whether the nipping force of the first roller pair is to be changed, the control unit being configured to control the switching mechanism on the basis of the determination. | 05-30-2013 |
| 20130161900 | IMAGE FORMING APPARATUS, RECORDING MEDIUM CONVEYING METHOD, AND IMAGE FORMING SYSTEM - A recording medium conveyor includes a first conveyance part conveying a recording medium; a second conveyance part conveying the conveyed recording medium toward a transfer position; a detection part detecting the position of the recording medium conveyed by the second conveyance part; a position error detection part detecting a position error between the transfer position and a position at which there is to be the recording medium when an image reaches the transfer position; a position error storage part storing the detected position errors; a steady-state position error calculation part calculating a steady-state position error from the stored position errors; a first control part controlling the conveyance speed of the first conveyance part to reduce the steady-state position error; and a second control part controlling the conveyance speed of the second conveyance part to reduce the detected position error, with the steady-state position error being reduced. | 06-27-2013 |
| 20130187331 | SHEET ALIGNING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A sheet aligning device may include a sheet conveyance path; a detecting unit configured to detect a side edge of a sheet being conveyed in the sheet conveyance path; a stopper on an upstream side of the detecting unit and configured to open/close so as to allow/prevent passage of the sheet and to position a leading edge of the sheet; a first conveying unit on an upstream side of the stopper, the first conveying unit including a pair of first rollers configured to come in contact with/ separate from each other; a second conveying unit on an upstream side of the first conveying unit, the second conveying unit including a pair of second rollers configured to come in contact with/separate from each other; and a horizontal movement unit configured to move the pair of first rollers in an axial direction based on a detection result output by the detecting unit. | 07-25-2013 |
| 20130214482 | CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A conveying device includes a pair of first nipping rollers configured to be movable in a width direction while nipping a recording medium and rotate to convey the recording medium; a pair of second nipping rollers configured to be movable in the width direction while nipping the recording medium and rotate to convey the recording medium, the pair of second nipping rollers being arranged on an upstream side of the first nipping rollers in a conveying path; and a detecting unit configured to detect an amount of positional deviation in the width direction of the recording medium being conveyed in the conveying path. The pair of first nipping rollers is moved in the width direction based on a detection result of the detecting unit while the pair of first nipping rollers nips the recording medium so that a positional deviation of the recording medium in the width direction is corrected. | 08-22-2013 |
| 20130234387 | MEDIUM FEEDING DEVICE - A medium feeding device | 09-12-2013 |
| 20130256986 | SHEET FEEDING DEVICE AND IMAGE PROCESSING APPARATUS - A sheet feeding device having; a first conveyance roller pair that feeds a sheet; a second conveyance roller pair that feeds the sheet, the second conveyance roller pair being provided downstream from the first conveyance roller pair in a feed direction in which the sheet is fed; and a third conveyance roller pair that feeds the sheet, the third conveyance roller pair being provided downstream from the second conveyance roller pair in the feed direction, in which, when an edge of the sheet that is located on the downstream side of the feed direction is skewed with respect to a direction perpendicular to the feed direction, the second conveyance roller pair slides in the perpendicular direction with the sheet slacking between the first conveyance roller pair and the second conveyance roller pair. | 10-03-2013 |
| 20130277909 | POSITION DETECTION DEVICE FOR DETECTING SHEET POSITION, CONVEYANCE DEVICE, AND IMAGE FORMATION DEVICE - A threshold for detecting a position of a lateral edge of a sheet is more accurately determined, whereby the accuracy of detection of the lateral edge position of the sheet is improved. A line sensor includes a plurality of element blocks. Each element block includes a plurality of pixels. The threshold for detecting the lateral edge position is determined based on a light level and a dark level of signals output from an element block that is actually used to detect the lateral edge position of the sheet. | 10-24-2013 |
| 20130334769 | IMAGE FORMING APPARATUS AND SHEET ADJUSTING DEVICE INCORPORATED THEREIN - An image forming apparatus includes an image forming device and a sheet adjusting device to adjust a lateral position of the sheet by moving a sheet in a lateral direction perpendicular to a sheet conveyance direction. The sheet adjusting device moves a driving roller in one of a first direction and a second direction for adjusting a lateral position of the sheet between the driving roller and a driven roller and then adjusting a lateral position of the driven roller to the driving roller by moving the driving roller in the second direction until the misaligned driven roller laterally contacts respective stoppers to restrict a range of lateral movement of the driven roller while the sheet is separated from the driving roller and the driven roller and by further moving the driving roller to a predetermined position while the driven roller remains contacting the stoppers. | 12-19-2013 |
| 20130334770 | DEVICE FOR HANDLING VALUABLE DOCUMENTS HAVING AN ALIGNING UNIT FOR ALIGNING BANKNOTES AND CHECKS - The invention relates to a device ( | 12-19-2013 |
| 20140145397 | IMAGE FORMING APPARATUS - An image forming apparatus reflecting one aspect of the present invention includes a deviation detecting portion, a registration roller, and a leading end detecting portion. The deviation detecting portion detects a deviation amount of the sheet being fed from a reference position in a sheet width direction orthogonal to a feeding direction. The registration roller modifies deviation by swinging the sheet being fed in the sheet width direction in accordance with the deviation amount detected by the deviation detecting portion. The leading end detecting portion is disposed on the downstream side in the sheet feeding direction of the registration roller and detects a leading end of the sheet being fed. The leading end detecting portion detects the leading end of the sheet after deviation is modified by the registration roller. | 05-29-2014 |
| 20140183816 | BANKNOTE INCLINATION CORRECTION DEVICE AND ATM - A banknote inclination correction device and an ATM (Automatic Teller Machine) including the banknote inclination correction device. The banknote inclination correction device includes: an inner channel board ( | 07-03-2014 |
| 20140232060 | CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A conveying device includes a pair of first nipping rollers configured to be movable in a width direction while nipping a recording medium and rotate to convey the recording medium; a pair of second nipping rollers configured to be movable in the width direction while nipping the recording medium and rotate to convey the recording medium, the pair of second nipping rollers being arranged on an upstream side of the first nipping rollers in a conveying path; and a detecting unit configured to detect an amount of positional deviation in the width direction of the recording medium being conveyed in the conveying path. The pair of first nipping rollers is moved in the width direction based on a detection result of the detecting unit while the pair of first nipping rollers nips the recording medium so that a positional deviation of the recording medium in the width direction is corrected. | 08-21-2014 |
| 20140291924 | IMAGE FORMING SYSTEM AND INTERMEDIATE APPARATUS - An image forming system of one aspect of the present invention includes a first image forming apparatus arranged on the upstream side in a sheet conveyance direction, a second image forming apparatus arranged on the downstream side in the sheet conveyance direction, and an intermediate apparatus arranged between the first image forming apparatus and the second image forming apparatus and having a registration roller on the sheet conveyance path through which a sheet conveyed from the first image forming apparatus is conveyed to the second image forming apparatus. The intermediate apparatus has a path opening mechanism configured to release a pressure contact of the registration roller arranged on the sheet conveyance path. | 10-02-2014 |
| 20140300049 | SHEET RETENTION DEVICE - A sheet retention device is provided for retaining at least one sheet. The sheet retention device comprises a sheet supporting means for supporting at least a first portion of the sheet, a rotatable guiding means configured to enclose a second portion of the sheet, an urging means and a drive means for in operation controllably rotating the rotatable guiding means. The rotatable guiding means comprises a passageway arranged through the rotatable guiding means, which passageway is configured to enclose the second portion of the sheet, the passageway having an entrance portion at one side of an outer surface of the rotatable guiding means and an exit portion at another side of an outer surface of the rotatable guiding means. Said exit portion is arranged in the passageway at an opposite end with respect to the entrance portion. The rotatable guiding means comprises a sheet deflecting surface, wherein in operation during at least part of a revolution of the rotatable guiding means a portion of the sheet is guided by the sheet deflecting surface into a sheet retaining position. The sheet retaining position is defined by the outer surface of the rotatable guiding means and the urging means. The urging means are urged against a portion of the outer surface of the rotatable guiding means in said sheet retaining position. | 10-09-2014 |
| 20140319763 | SHEET CONVEYOR DEVICE AND IMAGE FORMING APPARATUS - A sheet conveyor device includes a registration roller, an intermediate roller, a first sheet detection section, a first drive controller, a second drive controller, and a third drive controller. The registration roller conveys a sheet toward an image forming section for image formation. The intermediate roller conveys the sheet toward the registration roller. The first sheet detection section is used for optically detecting the sheet between the registration roller and the intermediate roller. The first drive controller drives the intermediate roller, while suspending driving of the registration roller. The second drive controller drives the registration roller when a predetermined conveyance wait period elapses from detection of a sheet by the first sheet detection section. The third drive controller drives the registration roller when a predetermined forced conveyance period elapses from a start of conveyance of the sheet loaded on a sheet loading section. | 10-30-2014 |
| 20140361483 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus including: a locking member having an abutment surface abutting a sheet to correct skew feed of the sheet; a holding member configured to hold the locking member to rotate from a waiting position when the locking member is pushed by the sheet; a roller pair configured to nip the sheet abutting the abutment surface; a first urging portion configured to urge the holding member to the waiting position; a movable support portion configured to support the locking member in a manner that the locking member is located a retracted position where the locking member contacts a surface of the sheet and allows the sheet to pass; and a second urging portion configured to urge the locking member to a position where the abutment surface abuts a succeeding sheet. | 12-11-2014 |
| 20150084273 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus including: a cover that is provided in an apparatus main body in an openable and closable manner to open a sheet conveying path through which the sheet is conveyed, by rotating in an open direction from a closed position; a guide member that is movably provided in the cover and forms the sheet conveying path; and a moving portion that is provided with a contact portion coming into contact with the sheet conveyed through the sheet conveying path, and is movably provided in the guide member; wherein the guide member moves with respect to the cover by rotating the cover in the open direction from the closed position, and thereby the moving portion moves by its own weight in a direction in which the contact portion of the moving portion is retracted from the sheet conveying path. | 03-26-2015 |
| 20150115526 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus includes a restricting portion provided on a second roller side with respect to a sheet conveying path and near a nip portion. This restricting portion is configured such that a first abutment portion is positioned on the second roller side from a straight line connecting a point protruding most to the sheet conveying path of the restricting portion and the nip portion in a state in which a second abutment portion is in contact with a surface of a first sheet as a rotary member rotates in a predetermined direction by the first abutment portion being pushed by the first sheet. | 04-30-2015 |
| 20150353308 | PRINTING APPARATUS AND CONTROL METHOD THEREFOR - A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from a stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other, and a determination unit which determines whether to convey the succeeding sheet to a position facing the printing unit while keeping an overlap state between the preceding sheet and the succeeding sheet. The determination unit determines whether the printing sheet is suitable for overlap conveyance, and if the determination unit determines that the printing sheet is unsuitable for overlap conveyance, the conveyance control unit conveys the succeeding sheet while the succeeding sheet does not overlap the preceding sheet. | 12-10-2015 |
| 20150353311 | PRINTING APPARATUS AND CONTROL METHOD THEREFOR - A printing apparatus comprises a conveyance control unit which controls conveyance of printing sheets so that a trailing edge of a preceding sheet as a printing sheet precedingly fed from the stacking unit and a leading edge of a succeeding sheet as a printing sheet succeedingly fed from the stacking unit overlap each other; and a skew correction unit which performs skew correction of the succeeding sheet while the succeeding sheet overlaps the preceding sheet by the conveyance control unit. The skew correction unit makes the leading edge of the succeeding sheet abut against the conveyance roller during a time from an end of a last line feed operation by the conveyance roller for printing on the preceding sheet by the printing unit to start of a next conveyance operation. | 12-10-2015 |
| 20150375949 | FEED DEVICE AND RECORDING APPARATUS - A feed device includes a feed roller, a transport roller pair provided further to the downstream side in the transport direction of a sheet than the feed roller, a first motor by which the feed roller is driven, and a second motor by which the transport roller pair is driven, and in which a controller that controls the first motor, and performs a skew removal operation accompanying reverse transport of the sheet by the transport roller pair causes a reverse current and a hold current as suppression currents that suppress the reverse transport amount of the feed roller to the reverse transport amount of the transport roller pair or less to flow to the first motor in at least a part of the skew removal operation. | 12-31-2015 |
| 20160023858 | SHEET CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A sheet conveying device includes: a skew detection section configured to detect a tilt of a sheet to be conveyed; two skew correction roller sections that are arranged side by side in a sheet width direction and are independently able to be driven; a downstream-side conveying roller section arranged at a downstream side of the skew correction roller sections in a sheet conveying direction; and a control section configured to control conveying operations of the skew correction roller sections based on a detection result of the skew detection section, wherein at least one of the skew correction roller sections is configured to be movable in the sheet width direction, and the control section moves at least one of the skew correction roller sections outward in the sheet width direction at predetermined timing. | 01-28-2016 |
| 20160031664 | CASHBOX WITH LATCH ARRANGEMENT - A banknote drive arrangement adjacent a banknote inlet repositions and drives a banknote into a banknote processing pathway for validation. The drive arrangement includes two drive rollers preferably spaced either side of a longitudinal axis of the pathway and adjacent to the banknote inlet. Each drive roller is separately controlled to allow different rotational speeds thereof (and forward and rearward movement Of a banknote) to allow shifting of a received end portion of a banknote before receiving the entire length of the banknote. This arrangement is preferably used with a sensing arrangement for sensing misalignment of an inserted banknote and if sensed, using the different rotational speeds to correct misalignment and preferably center a banknote in the processing pathway. | 02-04-2016 |
| 20160096698 | Sheet handling apparatus - A sheet handling apparatus includes a sheet transport path, a pinch and drive mechanism disposed at an entry side of the transport path for conveying the sheets in a transport direction X along the transport path, at least one liftable pinch and drive mechanism disposed at the transport path downstream of said entry side pinch and drive mechanism, a sheet alignment mechanism disposed further downstream at the transport path and arranged to impart a movement in a direction Z normal to the transport direction X to at least a part of a sheet that passes through, and a controller arranged to receive a sheet length signal and to control said at least one liftable pinch and drive mechanism in accordance with the sheet length. | 04-07-2016 |
| 20160251185 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS | 09-01-2016 |
