Class / Patent application number | Description | Number of patent applications / Date published |
271110000 | Control of separator responsive to sensing of sheet | 85 |
20080265487 | Document feeder and method of preventing skew in a document feeder - A document feeder includes a tray for holding one or more document sheets and a first flag disposed adjacent to the tray so as to engage a document sheet in the tray. A second flag is disposed adjacent to the tray to engage the document sheet so that the first and second flags produce balanced amounts of friction on the document sheet. | 10-30-2008 |
20080265488 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - Sheets fed out of a cassette supporting the sheets by a pickup roller are separated and fed by a sheet separation feeding unit having a feed roller and a separating roller which is rotatable in a direction opposite to a sheet feeding direction. A charge eliminating mechanism for eliminating charges of the separating roller is arranged on the upstream side in the sheet feeding direction in a separation nip portion between the feed roller and the separating roller. | 10-30-2008 |
20080296830 | Sound generator help system of shredder - A sound generator help system of a shredder is disclosed. A disorder signal during the operation of the shredder is transmitted to the sound generator help system which then suggests the user how to correct operate the shredder and fix the problem in voice. When a problem occurs, the system flashes light to notify the user. By making a switch, the user can determine whether to play voices of the suggestion. | 12-04-2008 |
20080315501 | Compact Structure Device for Extracting Sheets from Two Trays and Respective Printer | 12-25-2008 |
20080315502 | Feeding apparatus, and image forming apparatus incorporating feeding apparatus - A feeding apparatus including a feeding roller for conveying a sheet, a separation roller for conveying the sheet in a reverse direction, a transmission mechanism for transmitting the rotational force to the feeding roller, a limited force reverse transmission mechanism for transmitting the rotational force to the separation roller through a torque limiter, a forced reverse transmission mechanism for directly transmitting the rotational force to the separation roller, a temperature detector and a controller, wherein the controller controls the separation roller to receive rotational force through the forced reverse transmission mechanism after the limited force reverse transmission mechanism transmits the rotational force to the separation roller, then allows the limited force reverse transmission mechanism to transmit the rotational force to the separation roller, or to rotate the feeding via the transmission mechanism and the limited force transmission mechanism to transmit the rotational force to the separation roller. | 12-25-2008 |
20090322014 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - An apparatus includes a housing unit in which sheets are stacked, and a regulator in the housing unit including a body that has surfaces at which ends of the sheets are regulated. The apparatus further includes a stopper in the regulator, a retainer in the housing unit configured to engage with the stopper to lock the regulator to the housing unit, and a movement mechanism configured to move, when the body is pushed in a direction in which the regulator is to be moved, the stopper away from the retainer to disengage the stopper from the retainer. | 12-31-2009 |
20100001455 | SHEET SUPPLYING UNIT AND IMAGE FORMING DEVICE - A sheet supplying unit that supplies sheets includes a sheet accommodation tray that accommodates the sheets in a stacked state, the sheets including a first sheet which is an uppermost sheet in the stack of the sheets and a second sheet which is immediately below the first sheet; a pick-up roller that conveys the sheets in a sheet conveying direction; a detection sensor that detects passage of the sheets and is disposed downstream of the pick-up roller in the sheet conveying direction; and a control unit that controls operations of the pick-up roller in accordance with outputs from the detection sensor. The control unit includes a driving section that drives the pick-up roller to start conveying the second sheet when the detection sensor detects a trailing edge of the first sheet, if the second sheet is to be fed; a suspending section that temporarily stops driving the pick-up roller for a time period α-β when the detection sensor detects a leading edge of the second sheet, α being a predetermined time period, and β being a time period from a timing when the detection sensor detects the trailing edge of the first sheet to a timing when the detection sensor detects the leading edge of the second sheet; and a resuming section that resumes driving the pick-up roller to convey the second sheet after suspending for the time period α-β. | 01-07-2010 |
20100019441 | PICK-ARM MEMBER TO DETECT MEDIA AMOUNT - An imaging system includes a media holder configured to hold a plurality of sheets of media. A pick arm, including a pick roller, is positioned to contact an individual sheet of the plurality of sheets of media in the media holder. A member has a measurable property that is sensed by a sensor in correlation with a position of the individual sheet of the media in the media holder. The member or the sensor is movable by the pick arm along a path such that the measurable property is sensed by the sensor in order to provide a signal indicative of the position of the individual sheet of media in the media holder. The member produces zero drag upon the individual sheet of media. | 01-28-2010 |
20100032893 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - The present invention provides a sheet feeding apparatus and an image forming apparatus in which generation of a hollow at a separation roller can be prevented. | 02-11-2010 |
20100044953 | PAPER FEEDING CASSETTE - A paper feeding cassette includes: a cassette case configured to store sheets; a sheet tray on which the sheets are stacked, the sheet tray being rotatably attached to the cassette case; a push-up member configured to push up the sheet tray and rotate the sheet tray in one direction when driving force is input and release the push-up of the sheet tray to allow rotation of the sheet tray in the other direction when the input of the driving force is interrupted; and a buffer member configured to be nipped by the cassette case and the sheet tray and elastically deformed when the sheet tray rotates in the other direction. The buffer member is located, when viewed from a stacking direction of the sheets, in an area closer to a rotation axis of the sheet tray than a distal end of the sheet tray that is most distant from the rotation axis in the sheet tray. | 02-25-2010 |
20100072691 | Recording sheet feeder and image forming apparatus providing easy maintenance with simple structure - In a recording sheet feeder, a recording sheet tray moving mechanism moves a recording sheet tray between an upper position, at which an uppermost recording sheet of a plurality of recording sheets loaded on the recording sheet tray contacts a feed roller, and a lower position, at which the uppermost recording sheet separates from the feed roller. A first eccentric cam and a second eccentric cam rotate to press down the recording sheet tray. A driving force switch member drives the recording sheet tray moving mechanism when a driver rotates in a first direction, and rotates a feed roller driving shaft mounted with the feed roller when the driver rotates in a second direction. | 03-25-2010 |
20100072692 | Sheet processing system - A sheet pre-processing device includes a space portion as a sheet receiving unit that receives a pre-processed sheet, a first sheet conveying path for discharging the sheet to the sheet receiving unit, and a second sheet conveying path for reversing the sheet. A sheet post-processing device is removably attached into the space portion. When the sheet post-processing device is attached into the space portion, a conveying path and a reversing path works are provided, which are switched over by a switching unit. | 03-25-2010 |
20100078874 | DOCUMENT FEEDER, METHOD FOR CONTROLLING THE SAME, AND RECORDING MEDIUM - A document feeder to reverse a document by conveying the document to a reverse path. The document feeder includes a conveyance roller to convey the document, a reverse roller provided along a conveyance path of the document conveyed by the conveyance roller to convey the document to the reverse path by changing a direction of conveyance of the document, and a reverse roller control unit to control the reverse roller to correct skew of the document. The reverse roller control unit controls the reverse roller to correct the skew of the document by striking the document conveyed by the conveyance roller against a nip formed between the reverse roller and a roller provided opposite the reverse roller to temporarily bend the document. | 04-01-2010 |
20100096798 | METHOD AND MODULE FOR STORING AND DISPENSING PLANAR ITEMS SUCH AS BANKNOTES, WADS OF BANKNOTES OR THE LIKE - A method and a module are described for storing and dispensing flat items such as banknotes or wads of banknotes, wherein the items are retained between ribbon means and deposited on a rotating support element having at least two faces comprising one or more flat or convex portions, after crossing a pair of feed-in/dispensing main rollers. Means are provided for adjusting the length of the ribbon means along the portion that extends between the points of contact with the main rollers and the points of contact with the supporting element and/or with the items stored on the same. | 04-22-2010 |
20100133740 | Method for Applying Pick Retry Using a Modified Pick Roller Force to Reduce Likelihood of Failure to Pick Top Sheet From Stack - A method for applying a pick retry using a modified pick roller force includes operating an actuator in a first duty cycle to cause a pick roller to impose a first force on a media stack ordinarily sufficient to pick and feed a top sheet from the media stack to a media path, sensing whether or not the sheet arrives in the media path, and retrying the actuator in a second duty cycle different than the first duty cycle to cause the pick roller to impose a second force on the media stack different from the first force in response to not sensing the arrival of the sheet in the media path. The second force may be greater than the first force. The second duty cycle may be longer than the first duty cycle. Also, the method includes rotating the pick roller concurrently with or subsequently to operating the actuator. | 06-03-2010 |
20100148426 | PRINTING APPARATUS - Provided is a printing apparatus, including a sensor unit which optically detects, at a measurement position, a surface of a sheet, for measuring a moving state of the sheet. The sensor unit measures the moving state of the sheet when the sheet is located at the measurement position, and measures a moving state of a surface of the rotary member when the sheet is not located at the measurement position. | 06-17-2010 |
20110031680 | IMAGE FORMING APPARATUS - A controller sets a pressure-contact time from memory in accordance with rigidity of a sheet and starts a feeding operation of a sheet by causing a feeding roller to be pressure contacted with sheets on a sheet stacking plate. The controller controls the feeding roller to be separated from the sheets on the sheet stacking plate after passage of the pressure-contact time. In this way, it is possible to set the optimum pressure-contact time at the time of feeding sheets in accordance with the kind of sheet being fed and realize a stable feeding operation. Since the controller controls a driving unit based on a detection signal of a sheet-surface detecting flag that detects the height of the uppermost surface of a sheet bundle, it is possible to realize the stabilization and acceleration of a contacting operation. | 02-10-2011 |
20110049785 | PAPER TRAY OF PRINTER - A paper tray of printer is provided, which includes a paper tray body, a slide shaft, a first pick arm, a second pick arm and a paper width guide. The first pick arm is fixed on the slide shaft, and the second pick arm is slidely disposed on the slide shaft. The paper width guide is disposed on the paper tray body and is connected to the second pick arm through a linkage device to drive the second pick arm, so that a position of the second pick arm varies along with a position of the paper width guide. Accordingly, an interval between the first pick arm and the second pick arm can be varied along with a size of a paper, so as to avoid paper skew when the paper is fed. | 03-03-2011 |
20110049786 | MEDIA SEPARATING APPARATUS OF AUTOMATIC MEDIA DISPENSER - The present invention relates to a media separating device of an automatic media dispenser. In the present invention, a pick-up bracket | 03-03-2011 |
20110057382 | RECORDING APPARATUS AND DRIVING CONTROL METHOD THEREOF - Provided is a recording apparatus including: a holding tray which is inserted in a transportation path facing a recording head, and is capable of holding a recording medium on a front surface thereof, the holding tray having a plane area used to horizontally hold the recording medium and a sloped area provided in a rear end in a transportation direction and inclined toward a rear surface thereof as it becomes closer to a rear edge; a driving roller which comes into contact with the rear surface of the holding tray; a driven roller which comes into contact with the front surface of the holding tray and pinches the holding tray between the driving roller and the driven roller; and a control device which controls the driving roller in response to the case of transporting the plane area of the holding tray and the case of transporting the sloped area thereof. | 03-10-2011 |
20110074091 | PAPER SHEET CONVEYING DEVICE AND PAPER SHEET CONVEYING SYSTEM - A paper sheet conveying device is equipped with a conveying path ( | 03-31-2011 |
20110089628 | SHEET CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position. | 04-21-2011 |
20110115151 | AUTOMATIC DOCUMENT FEEDER - An automatic document feeder includes a top cover having a fixing structure and first attracting element, a sheet pick-up module and a second attracting element. The fixing structure and the first attracting element are disposed on an inner surface of the top cover. The sheet pick-up module includes a sheet pick-up arm. The sheet pick-up arm is rotated to either a standby position or a sheet feeding position. The second attracting element is disposed on the sheet pick-up arm. When the sheet pick-up arm is rotated to the sheet feeding position, the sheet pick-up module feeds the sheet into an internal portion of the automatic document feeder. When the sheet pick-up arm is rotated to the standby position, the first attracting element and the second attracting element are attracted by each other so that the sheet pick-up arm is fixed on the standby position. | 05-19-2011 |
20110127712 | SHEET FEEDING APPARATUS - A sheet feeding apparatus capable of obtaining a sufficient conveying force for pulling back double-fed overlapping sheets to a stacking tray side. A sheet feeding member feeds sheets incoming from a stacking tray which stacks the sheets into a conveying pass. A separating member separates the sheets fed to the conveying pass by the sheet feeding member one by one. A double feed detection sensor generates an output for detecting double feed of sheets fed to the conveying pass. A rotatable member contacts the fed sheet. A driving unit rotationally drives at least the rotatable member in a rotational direction for reverse feeding of sheets. A control unit controls the driving unit when the double feed of sheets is detected based on the output of the double feed detection sensor, such that the rotatable member is rotationally driven in the rotational direction for reverse feeding of sheets. | 06-02-2011 |
20110133391 | PAPER FEEDING APPARATUS, IMAGE FORMING APPARATUS AND PAPER FEEDING METHOD - A paper feeding apparatus which can certainly detect the position of a pickup roller, and an image forming apparatus including the paper feeding apparatus are provided. The paper feeding apparatus feeds a sheet stacked on a paper feed cassette by the pickup roller, and includes a sensor and the pickup roller rotatably supported by a support shaft and including a detection object part in which a first detection object part having a first length in a movement direction of movement around the support shaft and detected as a first detection state by the sensor, a second detection object part having a second length different from the first length in the movement direction and detected as the first detection state by the sensor, and a third detection object part formed between the first detection object part and the second detection object part and detected as a second detection state different from the first detection state by the sensor are arranged in the movement direction. | 06-09-2011 |
20110133392 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING SAME - A sheet processing apparatus capable of improving sheet processing performance and productivity is provided. While sheets are conveyed in a piled state toward a rear-end stopper, displacement is produced between the sheets by a pair of discharge rollers. Even if adhesion occurs between the sheets during conveyance thereof, the adhesion between the sheets can be removed before the sheets come into contact with the rear-end stopper. | 06-09-2011 |
20110140346 | SHEET DETECTION APPARATUS AND IMAGE FORMING APPARATUS - According to an embodiment of the present invention, a sheet detection apparatus that detects a sheet includes an actuator unit that is rotatable around a rotational axis so as to adopt any of a protruding position in which the actuator unit protrudes into a detection area for detecting the sheet and a retracted position in which the actuator unit is retracted from the detection area, and an operation unit that is capable of switching between a retracted state in which the actuator unit is set to the retracted position and a protruding state in which the actuator unit is set to the protruding position. An image forming apparatus according to an embodiment of the present invention includes the sheet detection apparatus, and the sheet detection apparatus is provided in a main body of the image forming apparatus. | 06-16-2011 |
20110180984 | Sheet conveying device, image reader, and image forming apparatus - A sheet conveying device includes: an openable-and-closable cover including a handle and a detecting member that detects presence of a sheet, wherein the detecting member is caused to rotate in association with the handle in a process of closing the cover. | 07-28-2011 |
20110210498 | RECORDING DEVICE AND RECORDING METHOD - A recording device which carries out the recording process with respect to a recording medium using a recording unit mounted on a moving member that reciprocates along a scan direction intersecting a feeding direction of the recording medium, including a reception unit that receives a recording instruction; an end portion detection unit that detects a position of an end portion in the width direction of the recording medium, based on a detection signal that is output from a signal output portion provided in the moving member; a memory unit that stores end portion positional information; and a control unit that controls the movement of the moving member so that, when the end portion positional information is stored in the memory unit and an edge recording is instructed by the recording instruction, the position of the end portion in the width direction of the recording medium is not detected. | 09-01-2011 |
20110241280 | SHEET PROCESSING APPARATUS - A sheet processing apparatus includes a sheet-table unit, a sheet-separating unit, a convey unit, a discharge unit, a sheet processing unit, and a sensor arranged at an upstream end of the convey unit and spaced from the discharge unit with a predetermined distance. The convey unit has at least one convey roller, at least one convey pulley, and an elastic device connected with the convey pulley. The elastic device has a stepping motor, a transmission system, a shaft and at least one torsional spring mounted on the shaft. Two ends of the torsional spring is connected with the convey pulley. When the signal resulted from a rear end of the sheet apart from the sensor is sent to the system controller, the stepping motor is commanded by the system controller to rotate the shaft. The torsional spring is twisted to make the convey pulley move away from but still contact with the convey roller. | 10-06-2011 |
20110254219 | Feeder for Feeding Document to Document Imaging System and Method for Feeding Documents - A method and apparatus for processing documents are provided. The apparatus includes a feeder for receiving a packet of a plurality of documents and separating the documents to serially feed the documents to a scanner. A retard adjacent the feeder is operable in first and second positions. In the first position the retard forms a nip with the feeder so that the retard is operable to impede the progress of one or more documents in the packet while the feeder feeds one of the documents in the packet. In the second position, the retard is spaced apart from the feeder to form a gap between the feeder and the retard. The system further includes a sensor for detecting a characteristic of the documents in a packet indicative of whether the number of documents in the packet exceeds a predetermined threshold. A drive mechanism automatically drives the retard pad between the first and second positions in response to the detected characteristic. | 10-20-2011 |
20110260391 | ERROR DETECTION METHOD OF SHEET HOLDER AND IMAGE FORMING APPARATUS USING THE SAME - According to one embodiment, an error detection device including a sensor which detects a state where an object has moved to a predetermined position, a drive device which drives the object to a predetermined position, and an error determination device which reports that a predetermined process is to be performed with respect to the target, if the sensor detects a state where the target does not move to the predetermined position within a predetermined time from if the drive device starts driving. | 10-27-2011 |
20110304094 | DOCUMENT FEEDER, IMAGE READER, AND IMAGE FORMING APPARATUS - A document feeder includes a document placing portion, a pick-up roller, a pair of feed rollers, a pair of registration rollers, a document sensor, a moving mechanism, and a control portion. The pick-up roller can move between a sheet feeding position where the pick-up roller contacts with the upper surface of the document placed on a placement surface and a standby position where the pick-up roller does not contact with the upper surface of the document placed on the placement surface. The document sensor detects a document between the feed rollers and the registration rollers in a document feed direction. The moving mechanism moves the pick-up roller up and down. The control portion moves the pick-up roller up to the standby position at a timing when the leading edge of the card document reaches the document sensor in a card document mode in which card documents are successively fed. | 12-15-2011 |
20120025450 | IMAGE FORMING APPARTUS AND FEED MECHANISM - An image forming apparatus, comprising: a feed roller; a separation unit; a position detection part includes: a detection member that can move to a retracted position, and a detector which detects that a image formation target material is disposed at the feed position or the feed setup position in a case of having detected that the detection member is at the retracted position; and a restricting member that is disposed at a restricting position that restricts the detection member from moving from the initial position to the retracted position by abutting the detection member, in a detached state in which the separation unit is detached from the mounting part. | 02-02-2012 |
20120056369 | PAPER CONTROLLER FOR IMAGE FORMING APPARATUS - A paper controller of an image forming apparatus includes a machine base having a main passage and a bypass therein. Three conveying rollers are pivoted on the machine to send papers going through the main passage and the bypass respectively. One conveying roller adjacent to the paper outlet has a driving portion and a driving-free portion, which is a flat face on the circumference, that the driving portion touches a driven roller to make it rotating and the driving-free portion will not touch the driven roller when the conveying roller is rotating that a gap is formed between the driving-free portion and the driven roller to prevent the paper from jamming at the paper outlet. | 03-08-2012 |
20120080835 | SERVO EDGE PRESSING PAPER FEEDING DEVICE - A paper feeding mechanism includes a vacuum absorption variable-speed paper feeding mechanism and a vacuum absorption constant-speed paper feeding mechanism, two edge pressing wheels are installed on a edge pressing paper feeding shaft arranged above a constant-speed paper feeding wheel in the middle, the gaps between the edge pressing wheels and the constant-speed paper feeding wheel in the middle are smaller than the thickness of a paper board, and the distance between the two edge pressing wheels is adjusted by moving on the edge pressing paper feeding wheel shaft. | 04-05-2012 |
20120091652 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus including, a conveying portion conveying a sheet; a rotation detection portion rotatably provided; a sensor portion detecting the conveyed sheet based on a rotational position of the rotation detection portion; a rotation transmission portion transmitting a rotational driving force to the rotation detection portion to rotate the rotation detection portion in a predetermined rotational direction after the rotation detection portion is rotated by being pushed by the leading end of the sheet; and an urging unit configured to apply an urging force to the rotation detection portion so that the rotation detection portion comes into contact with a surface of the sheet, thereafter the rotation detection portion is returned to a waiting position along with the passage of the rear end of the sheet through the rotation detection portion after the rotation detection portion is rotated by the rotational driving force of the rotation transmitting unit. | 04-19-2012 |
20120104680 | Method for Feeding Compressible Media in an Image Forming Device - A pick mechanism according to one exemplary embodiment includes transmission housing and a drive transmission engageable with a drive shaft for receiving rotational force from the drive shaft. A pick axle has at least one pick wheel mounted thereon and is operatively connected to the drive transmission for rotating the at least one pick wheel. A first stop extends from the transmission housing for limiting the rotation of the pick mechanism about the drive shaft. A method for feeding compressible media according to one embodiment includes rotating a pick mechanism downward about a drive shaft, limiting the downward rotation of the pick mechanism to convert the pick mechanism from a compliant element to a non-compliant element, and feeding a first compressible media from a top surface of a lift plate in a media process direction with the non-compliant pick mechanism. | 05-03-2012 |
20120104681 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - In a sheet feeding apparatus and image forming apparatus of the present invention having stable performance without occurrence of double-feeding and non-feeding regardless of a type of sheet, a sheet holding portion which distorts a sheet as restricting sheet movement in a sheet drawing direction by pressing the upper face of sheets stacked on a bottom plate of a sheet cassette is disposed to the downstream in the sheet drawing direction of a feeding roller which is capable of performing forward and reverse rotation and a sheet holding position by the sheet holding portion is set to be closer to the feeding roller with decrease of sheet stiffness. | 05-03-2012 |
20120146281 | SHEET FEEDING DEVICE, CONTROL METHOD FOR THE SHEET FEEDING DEVICE, AND IMAGE FORMING APPARATUS INCORPORATING THE SHEET FEEDING DEVICE - A sheet feeding device includes a feeding device and a detector. The feeding device is configured to feed a sheet to a destination. The detector is configured to detect the sheet at the destination. If the detector does not detect the sheet within a predetermined time after the start of preparation for a feeding operation by the feeding device, it is determined that the sheet is misfed. Further, the start of the feeding operation of a sheet is changed in accordance with the result of detection by the detector of the presence or absence of a sheet standing by at the destination. | 06-14-2012 |
20120169008 | SHEET PROCESSING APPARATUS - In a sheet processing apparatus that, for example, sorts or staples sheets after image formation, when preceding finishing is not completed on a processing tray, a third sheet fed anew into awaiting tray of a sheet placing member configuring a sheet waiting unit, which temporarily puts a sheet conveyed thereto on standby, is stacked to be shifted such that leading ends of second and third sheets are located further on a conveying direction upstream side than a leading end of a first sheet. Consequently, longitudinal alignment in the processing tray after that is surely performed. | 07-05-2012 |
20120175839 | SHEET ITEM FEEDER - A feeder for feeding sheet items has at least one circulatable feeding surface for frictionally engaging a sheet item from a stack and at least one separation surface for frictionally engaging the sheet item or an entrained next sheet item from an opposite side. In a lateral direction transverse to the feeding direction, the at least one feeding surface is located between two of the separation surfaces and/or the at least one separating surface is located between two of the feeding surfaces. At least the feeding surface or the separating surface has a resilient zone and a stiff zone more remote from a laterally adjacent separating surface or surfaces or, respectively feeding surface or surfaces than the resilient zone. | 07-12-2012 |
20120181741 | SHEET DETECTING APPARATUS AND IMAGE FORMING APPARATUS - The present invention provides a sheet detecting apparatus that detects a sheet, the sheet detecting apparatus comprising: a lever member; a biasing portion that biases the lever member for a first position where the abutting surface abuts against the leading end of the sheet; a supporting mechanism that movably supports the lever member to move in an order of the first position, a second position to which the lever member moves by the sheet against the biasing force of the biasing member, and a third position where the lever member abuts on a surface of the sheet and waits in order to move to the first position when a trailing end of the sheet passes the lever member, while keeping a abutting surface of lever member facing upstream; an interlocking portion that interlocks with the lever member; and a detector that detects a position of the interlocking portion. | 07-19-2012 |
20120193863 | SHEET FEEDER WITH PICKUP ROLLER AND IMAGE FORMING APPARATUS - A sheet feeder includes a pickup roller for feeding a sheet on a tray toward a predetermined processing position, an arm member rotatably supporting the pickup roller, a rotary shaft supported on the housing to be rotatable about an axis thereof, a coupling member for coupling the arm member and the rotary shaft, a pivoting mechanism for pivoting the arm member via the rotary shaft so that the pickup roller shifts its position between a feeding position and a retracted position, and a controller for controlling the operation of the pivoting mechanism. The controller controls the arm member to pivot in such a direction that the pickup roller moves toward the retracted position when a sheet is placed on the tray. | 08-02-2012 |
20120200028 | IMAGE FORMING APPARATUS - An image forming apparatus includes a unit that detects the position of a sheet in a sheet transport path when jamming is detected, a forced moving processing unit that, when jamming is detected and rotational driving of sheet transport rollers is stopped, based on the position of the sheet in the sheet transport path, performs forced moving processing in which the sheet is transported so as to forcibly move the sheet to a sheet removal position, and a forced moving processing determination unit that determines whether the forced moving processing is to be performed by the forced moving processing unit in accordance with the position of the sheet that was detected by the sheet position detection unit. | 08-09-2012 |
20120228819 | SHEET FEEDING APPARATUS - A sheet feeding apparatus includes a sheet feeding channel, a sheet feeding structure, a sheet stopping structure, plural sensing arms, an optical sensor and a controller. By the sheet feeding structure, a paper sheet is fed into the sheet feeding channel. The sheet stopping structure is used for stopping the paper sheet from being moved forwardly. During the process of feeding the paper sheet, the plural sensing arms are pushed by the paper sheet to be rotated. According to the rotating statuses of the sensing arms, the optical sensor issues different signals to the controller. According to these signals, the controller will control the operations of the sheet stopping structure and the sheet feeding structure, thereby correcting the skew condition. | 09-13-2012 |
20120306147 | DUAL NIP MULTI-FEED DETECTION AND CONTROL SYSTEM - A paper feed system for use in a printing apparatus that detects multi-feeds and separates all sheets while allowing a single sheet to continue into the machine includes a nip with a drive roller for feeding sheets. A reversible pressure roller downstream of the drive roller is connected to a motor, but idles in the direction of the paper feed in normal operation. When a multi-feed is detected, the motor is turned ON and the reversible pressure roll actuated by a controller. The reversible pressure roller has more friction with the sheet in its contact than the friction between sheets. This drives the sheet in contact backwards. | 12-06-2012 |
20130026699 | IMAGE FORMING APPARATUS AND METHOD OF CONTROLLING AN IMAGE FORMING APPARATUS - An image forming apparatus comprises an image-forming part; a paper feeding part; a resist part; a rotating body; a detector for detecting the arrival of paper at the resist part; a timer part for measuring a measurement time from when feeding of a second sheet of paper from the paper feeding part is begun to when the detector detects the arrival of the second sheet of paper, and a sheet interval time from when the detector detects the passage of a first sheet of paper immediately preceding the second sheet of paper to when the arrival of the second sheet of paper is detected; and an identifier part for referring to the measurement time, a reference measurement time, the sheet interval time and a reference sheet interval time, and deciding the paper feeding part advancing or delaying the paper feed start timing. | 01-31-2013 |
20130043642 | CONVEYING APPARATUS - When continuous-conveying control is executed in a conveying apparatus which can handle various sizes of sheet, a conveying apparatus which can efficiently detect a conveying error by a required minimum conveyed amount or conveying time according to a sheet size is provided. For that purpose, a maximum conveyed amount from start of sheet feeding of the subsequent page to determination to be a sheet-feeding error is set based on a detection result of a rear end portion on a previous page by a PE sensor. The maximum conveyed amount when the rear end portion of the previous page is detected is set smaller than the maximum conveyed amount when not detected. | 02-21-2013 |
20130119599 | SPACING INTERVAL CONTROL METHOD AND SHEET LAMINATING APPARATUS USING THE SAME - A spacing interval control method is used in a sheet laminating apparatus for controlling a constant spacing interval between any two adjacent ones of multiple documents. The sheet laminating apparatus includes an automatic document feeding mechanism and a sheet laminating mechanism. By means of multiple sensors within the automatic document feeding mechanism, multiple documents are successively transported from the automatic document feeding mechanism to the sheet laminating mechanism at a constant spacing interval between any two adjacent ones of multiple documents. As a consequence, the documents after being heated or pressed by the sheet laminating mechanism will be cut into multiple separate and identical-sized laminated documents. | 05-16-2013 |
20130134654 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus including, a conveying portion conveying a sheet; a rotation detection portion rotatably provided; a sensor portion detecting the conveyed sheet based on a rotational position of the rotation detection portion; a rotation transmission portion transmitting a rotational driving force to the rotation detection portion to rotate the rotation detection portion in a predetermined rotational direction after the rotation detection portion is rotated by being pushed by the leading end of the sheet; and an urging unit configured to apply an urging force to the rotation detection portion so that the rotation detection portion comes into contact with a surface of the sheet, thereafter the rotation detection portion is returned to a waiting position along with the passage of the rear end of the sheet through the rotation detection portion after the rotation detection portion is rotated by the rotational driving force of the rotation transmitting unit. | 05-30-2013 |
20130161896 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - When a sheet is fed, a feeding roller is rotated in the direction opposite to the direction in which the sheet is fed to draw out the uppermost sheet from a separation claw, and then the sheet is fed in such a manner that the feeding roller is rotated in the direction in which the sheet is fed to feed the drawn out sheet along the upper surface of a separation claw. When the sheet is fed, a curvature formation portion curves downward both ends in the width direction of the second and subsequent sheets to integrally lower pressing portions for pressing both ends in the width direction of the sheet along with the curved sheets and to separate the pressing portions from the uppermost sheet, thereby preventing the leading end of the uppermost sheet from catching the pressing portions. | 06-27-2013 |
20130249163 | PAPER TRANSMITTING MECHANISM AND THE DOCUMENT FEEDER WITH THE PAPER TRANSMITTING MECHANISM - A paper transmitting mechanism mounted on the transmitting path which includes a driving wheel, a driving system drives the driving wheel, a pressure wheel, a pressure wheel adjusting unit, and a paper sensor settled upstream to the driving wheel and pressure wheel. The pressure wheel adjusting unit includes an elastomeric unit; one end of the elastomeric unit is connected to the axle of the pressure wheel, and the other end is connected to a linear driving device. When the paper sensor detects the paper is going to enter or leave the driving wheel, the paper sensor will send a signal for adjusting the clamping force between the driving wheel and the pressure wheel to make the clamping force and the friction between the driving wheel and the pressure wheel adjustable according to the position of the paper, so as to avoid the paper slipping or vibrating during transmitting. | 09-26-2013 |
20140015192 | SHEET THICKNESS DETECTOR AND IMAGE FORMING APPARATUS INCLUDING SAME - A sheet thickness detector incorporated in an image forming apparatus includes a sheet conveying member to rotate and convey a sheet in a sheet conveyance direction, a driven sheet conveying member to contact the sheet conveying member and form at least one first transfer nip therebetween in a lateral direction and to displace by an amount equivalent to a thickness of the sheet passing through the first transfer nip and rotated with the sheet conveying member in the sheet conveyance direction, a displacement member to contact the sheet conveying member and form a second transfer nip smaller than the first transfer nip in the lateral direction and to displace by an amount equivalent to the thickness of the sheet passing through the second transfer nip and supported at a support member, and a displacement amount detector to detect an amount of displacement of the displacement member. | 01-16-2014 |
20140042690 | SHEET FEEDER AND IMAGE FORMING APPARATUS USING THE SAME - A sheet feeder including a sheet container on which sheets are placed, a transfer roller to transfer the sheets to an image forming unit via a transfer path; a friction pad to transfer the sheets together with the transfer roller; and a movable portion provided on the transfer path to alter a direction of the transfer path based on the sheets. | 02-13-2014 |
20140070481 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A sheet feeding roller | 03-13-2014 |
20140077442 | PRINTING APPARATUS AND METHOD FOR DETECTING ORIGIN OF CONVEYING ROLLER - The present invention is to provide a printing apparatus capable of correctly detecting an origin of a conveying roller for conveying a print medium at the time of its rotation with a simple configuration that does not accompany an increase of cost. For this purpose, the printing apparatus is equipped with a lock mechanism (a lock link lever) for stopping rotation of the conveying roller at a predetermined rotational position and saves a count value of a rotation amount of the conveying roller when the conveying roller is locked by the lock mechanism concerned as origin information. After this, driving of the conveying roller is controlled based on the saved origin information and a phase of rotation of the conveying roller obtained from the count value of the conveying roller. | 03-20-2014 |
20140103600 | SHEET FEEDING DEVICE - A sheet feeding device including: a sheet feeding roller configured to convey a sheet; a placing portion on which the sheet is configured to be placed; a moving unit configured to move the placing portion toward the sheet feeding roller; a separation pad to which a leading end of the conveyed sheet is configured to abut at a contact position; a separation roller configured to nip the sheet conveyed by the sheet feeding roller between the separation pad and the separation roller at a nip position while bringing the sheet into sliding contact with the separation pad; and a separation assistant member provided between the sheet feeding roller and the separation roller and configured to change a distance between the nip position and the contact position according to a basis weight of the sheet by coming into contact with the sheet. | 04-17-2014 |
20140103601 | Sheet Conveyer and Image Reading Apparatus - A sheet conveyer, including a first roller to rotate to convey a sheet in a conveying direction; a separator arranged to be opposed to the first roller and configured to nip the sheet and to separate the sheet from other sheets; a multiple sheet sensor arranged in a downstream position with respect to the first roller and configured to sense presence of multiple sheets, the multiple sheet sensor including an emitter and a receiver; and a second roller arranged in a downstream position with respect to the multiple sheet sensor and configured to convey the separated sheet, is provided. A component being at least one of the emitter and the receiver is arranged in an outer side position with respect to the separator, and at least a part of the component is arranged in an inner side position with respect to the second roller. | 04-17-2014 |
20140110899 | IMAGE FORMING APPARATUS WITH MOVABLE FEED GUIDE - An image forming apparatus according to an embodiment comprises a feed guide forming a feed path of a sheet and having an end portion movable between a closed position and an open position by rotating around a shaft, wherein the end portion is positioned above the shaft when the feed guide is in the open position, and the feed guide is configured to provide access for removal of a jammed sheet when in the open position. The image forming apparatus further comprises a holding unit configured to releasably hold the end portion of the feed guide in the open position. | 04-24-2014 |
20140125004 | PAPER CONVEYING DEVICE, IMAGE FORMING APPARATUS, AND PUSH-IN AMOUNT ADJUSTING METHOD - A paper conveying device includes an intermediate transfer member and a paper conveying member driven so as to rotate at the same rotational speed, and an adjusting device. On an outer peripheral surface of the intermediate transfer member, an elastic layer is provided. An axes distance between the intermediate transfer member and the paper conveying member is adjusted by the adjusting device so that drive torque for rotating the intermediate transfer member and the paper conveying member at the same rotational speed becomes smaller than a target set value. Accordingly, occurrence of the shear is suppressed without changing a rotational speed ratio of rollers arranged opposite to each other. | 05-08-2014 |
20140167347 | Sheet Transport Device - A sheet transport device includes a sheet supporting surface which receives a plurality of sheets set thereon, a separation roller which separates the sheets set on the sheet supporting surface sheet by sheet to transport a separated sheet in a predetermined transport direction, and a first detection unit which is disposed to the supporting surface and detects whether a sheet is set on the sheet supporting surface. The separation roller and the first detection unit are disposed to be separated at least in a sheet width direction orthogonal to the predetermined transport direction, and a distance between the first detection unit and an end edge of the separation roller at a side of the first detection unit is longer than a short side of a non-allowable sheet which is smaller than a minimum sheet size within an allowable transport range set in the sheet transport device. | 06-19-2014 |
20140183812 | SHEET CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A sheet conveying device includes a conveying unit configured to convey a sheet by a first rotating body and a second rotating body that is provided so as to be movable in a contacting/separating direction with respect to the first rotating body; a rotation amount measuring unit configured to measure a rotation amount of the second rotating body, the rotation amount measuring unit being provided so as to be movable in the contacting/separating direction along with the second rotating body; and a conveying distance calculating unit configured to calculate a conveying distance of the sheet based on a measurement result obtained by the rotation amount measuring unit. | 07-03-2014 |
20140239574 | CONVEYING APPARATUS, IMAGE RECORDING APPARATUS, AND METHOD TO BE EXECUTED BY CONVEYING APPARATUS - An image recording apparatus, including: a supply tray; a supply roller; a manual tray; a recording device; a motor; a supply driving power transmitter which transmits a reverse driving power of the motor to the supply roller; a conveyance driving power transmitter; a switcher switchable between a first state in which a driving power of the motor is transmitted to the supply driving power transmitter and a second state in which the driving power is not transmitted to the supply driving power transmitter; and a controller configured to, when an image is to be recorded on a sheet placed on the manual tray and when the switcher is in the first state, switches the switcher to the second state and rotates the motor reversely to rotate a conveyor roller in a second rotational direction reverse to a first rotational direction for conveying a sheet in a conveying direction. | 08-28-2014 |
20140284871 | SHEET CONVEYING APPARATUS, AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - A sheet conveying apparatus according to one aspect of the present disclosure includes a roller drive portion, a first drive portion, a restriction member, a second drive portion, and a drive control portion. Restriction member contacts with rear end of sheet surface, in conveying direction, of uppermost sheet in sheet stack stored in sheet storage portion to restrict feeding of sheet from sheet storage portion. Drive control portion controls roller drive portion, first drive portion, and second drive portion, and causes opposing member to separate from sheet feed roller, and causes restriction member to contact with sheet surface of second sheet to be conveyed immediately after first sheet, after first sheet located on uppermost position of sheet stack is fed by pickup roller and leading end of first sheet in conveying direction passes through sheet feed nip portion. | 09-25-2014 |
20140319755 | Methods for Feeding Media Sheets Having Increased Throughput - Methods for picking a following sheet of media before the prior sheet of media has been detected exiting a media input tray in an imaging apparatus to increase media throughput. The methods may further include processes for shifting an image area to a shingled sheet of media without having to stop the imaging process. | 10-30-2014 |
20150014914 | AUTO DOCUMENT FEEDER, SCANNER INCLUDING THE SAME, AND METHOD OF CONTROLLING AUTO DOCUMENT FEEDING - Provided are an auto document feeder (ADF), a scanner including the ADF, and a method of controlling auto document feeding. The ADF includes: a feed unit picking up a sheet of paper and carrying the sheet of paper to a scan unit; a feed control unit controlling the feed unit; and a retry control unit. If a sheet of paper is not normally picked up by the feed unit, the retry control unit decreases a speed of a motor driving the feed unit or increases a current supplied to the motor for picking up the sheet of paper. Therefore, although sheets of paper are not normally fed when a user intends to use various kinds of sheets of paper with the ADF, the retry control unit may stabilize feeding of the feeding of the sheets of paper. Thus, efficient, convenient, and high-quality paper feeding may be possible. | 01-15-2015 |
20150028535 | PAPER FEEDER AND IMAGE FORMING APPARATUS - A paper feeder includes a document loading tray | 01-29-2015 |
20150061212 | SHEET SUPPLY DEVICE AND IMAGE FORMING APPARATUS - The first remaining amount holding unit stores the remaining amount of sheet detected by the remaining amount detection unit before a sheet adding operation to the sheet stacking surface. The second remaining amount holding unit stores the remaining amount of sheet detected by the remaining amount detection unit after the sheet adding operation to the sheet stacking surface. The determination unit determines a sheet adding position based on the respective remaining amount of sheet stored in the first remaining amount holding unit and the second remaining amount holding unit. The feeding speed control unit changes a sheet feeding speed of the pickup roller based on the sheet adding position determined by the determination unit and the sheet remaining amount detected by the remaining amount detection unit. | 03-05-2015 |
20150084267 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A sheet feeding apparatus includes a stacking portion on which a sheet is stacked, a drive source configured to generate a driving force, a pick-up member rotatable with the driving force and configured to rotate in contact with the stacked sheet to feed the sheet, a feed member configured to feed the sheet fed by the pick-up member, an elevating unit configured to raise and lower the stacking portion with the driving force to bring the sheet and the pick-up member into contact with each other, and a control unit configured to control the elevating unit, when a trailing edge of a first sheet fed to the pick-up member is upstream of the feed member and downstream of the pick-up member, to bring a second sheet stacked on the stacking portion and to be fed subsequently to the first sheet and the pick-up member into contact with each other. | 03-26-2015 |
20150091243 | SHEET SUPPLY DEVICE AND IMAGE FORMING APPARTUS - The pickup roller is placed above a lifting plate made of a flexible material and feeds the sheet with abutting on an upper surface of the sheets loaded on the lifting plate. The sensor detects an arrival of the sheet fed by the pickup roller on a downstream side of the pickup roller. The abnormality detection unit detects the sheet feeding abnormality of the sheet fed by the pickup roller based on the drive start time of the pickup roller and the time sheet detection by the sensor. The abnormality detecting condition correction unit corrects the abnormality detecting condition of the abnormality detection unit depending on the amount of sheets on the lifting plate. | 04-02-2015 |
20150102551 | DETECTION APPARATUS AND IMAGE FORMING APPARATUS - A detection apparatus includes a rotating member which rotates in a rotation direction from a standby posture by being pushed by a conveyed sheet, a sensor of which an output is changed as the rotating member rotates from the standby posture, an elastic member which elastically applies a force to the rotating member in a direction opposite to the rotation direction, a first abutting portion which abuts onto the rotating member applied by a force by the elastic member to maintain the rotating member in the standby posture, and a regulation unit which allows the rotating member to rotate in the rotation direction by being pushed by the conveyed sheet and regulates the rotating member not to rotate in the rotation direction by a repulsion force when the rotating member rotated in the opposite direction by an elastic force of the elastic member abuts onto the first abutting portion. | 04-16-2015 |
20150108710 | IMAGE FORMING APPARATUS AND METHOD OF CONTROLLING THE SAME - An image forming apparatus and a method of controlling the same capable of obtaining the same effect as when sheets of paper are picked up in such a state that front ends thereof are all aligned by controlling paper feeding based on results of detecting paper movement and capable of improving feeding speed by maintaining a time taken for the sheet of paper to move to a feed roller constant are provided. The apparatus includes a pick-up roller to pick up a sheet of paper, a forward roller to feed the picked-up sheet of paper toward a downstream side of a paper moving path, a feed roller to feed the sheet of paper fed by the forward roller toward the downstream side of the paper moving path, and a feed sensor mounted between the forward roller and the feed roller to detect movement of the sheet of paper. | 04-23-2015 |
20150336756 | IMAGE READING APPARATUS AND MULTI-FUNCTION APPARATUS HAVING THE SAME - An image reading apparatus includes a document tray, and an automatic document feeding unit disposed at an upper side of the document tray to transport documents as to pass through the upper side of the document tray. The automatic document feeding unit includes a body; a document supplying tray having a first width corresponding to a width of a first document to be scanned and at which the first document to be scanned is loaded; and an auxiliary guide having a second width that is smaller than the first width to correspond to a second document having a width smaller than the width of the first document and is installed at the document supplying tray. The auxiliary guide includes a guide portion to support both widthwise sides of the document to be scanned while entered toward an upper side of the mounting unit. | 11-26-2015 |
20160122142 | SHEET FEEDER AND IMAGE FORMING APPARATUS - A holding member of a sheet feeder includes a locking member engageable with a part of a pinion gear and holds the pinion gear and a sensor member. The holding member is detachably attachable to the sheet storage portion. The pinion gear and a pair of rack members are meshed with the holding member attached to a sheet storage portion. The holding member holds the pinion gear movably in an axial direction of the rotary shaft so that the pinion gear is displaceable between a first position where the rotation of the pinion gear is regulated and a second position where the pinion gear is rotatable. The pinion gear is located at the first position with the holding member detached from the sheet storage portion and located at the second position with the holding member attached to the sheet storage portion. | 05-05-2016 |
20160187831 | ROLLER UNIT AND IMAGE FORMING APPARATUS - A roller unit for reducing collision noise includes: a roller having a rotation shaft extending in a first direction; a facing member disposed as to face the roller via a recording medium; a holding member holding the roller movable between a separating position and a contacting position; an urging member applying first urging force to the roller in a second direction as to make the roller separated from the facing member; and a drive force applying member applying second urging force urging the roller in a third direction opposition to the second direction and rotational force rotating the roller in rendering the rotation shaft as a rotary center. The second urging force is provided to the roller via the holding member when the roller moves from the separating position to the contacting position as well as moves from the contacting position to the separating position. | 06-30-2016 |
271111000 | Including plural separators or plural sensors | 9 |
20090212483 | SHEET FEEDING DEVICE - Imaging target media stacked in a tray are bent in a width direction orthogonal to a transmission direction so that rigidity of the imaging target media in the transmission direction increases than the rigidity before bending. Consequently, even though a separation imaging-target medium is bound together with a transportation imaging-target medium using a binding member, the separation imaging-target medium is transmitted to an imaging unit along with the transportation imaging-target medium by transporting rollers without bending in the transmission direction. A superimposed-transmission of the imaging target media is detected by sensors and rotation of the transmitting roller is stopped. Due to this, the superimposed-transmission of the imaging target media is stopped just before the imaging unit. | 08-27-2009 |
20100007077 | MANUAL PAPER FEED DEVICE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - A manual paper feed device includes: a manual feed tray on which sheets are stacked; a paper feeding roller that feeds the sheets on the manual feed tray into an image forming unit; a pressing tray that is, with the sheets stacked thereon, rotatably supported and a downstream side of which in a conveying direction of the sheets is biased to the paper feeding roller side; a bias releasing member that separates and holds the pressing tray in a direction opposed to the bias direction and releases the biasing; and a sensor that detects at least one of presence or absence of the sheets on the manual feed tray and a bias releasing state of the pressing tray. The manual paper feed device prohibits paper feeding operation when the bias releasing state of the pressing tray is detected regardless of presence or absence of sheets stacked on the pressing tray. | 01-14-2010 |
20100090393 | BANKNOTE FEEDING APPARATUS - A banknote feeding apparatus | 04-15-2010 |
20100096799 | SHEET FEEDING APPARATUS AND MEDIUM DETECTING METHOD - A sheet feeding apparatus includes a feeding unit capable of feeding a sheet-like medium, plural speed detecting units capable of respectively detecting a speed of the medium fed by the feeding unit, at plural positions along a width direction of the medium orthogonal to a feeding direction of the medium, and a bound-medium detecting unit capable of detecting the medium having a part thereof bound with another one of the medium, based on the speed detected respectively by the speed detecting units. | 04-22-2010 |
20110241281 | Methods for Moving a Media Sheet Within an Imaging Device - A method for moving a media sheet within an imaging device includes moving a media sheet along a media path by rotating an at least one roller. While the media sheet is moving, a first sensor is activated with the media sheet and then a second sensor is activated with the media sheet. Feedback is received by a processor indicating the number of rotations of the at least one roller. A measured distance D | 10-06-2011 |
20130134655 | Sheet Conveyer - A sheet conveyer, including a first roller to rotate to convey a sheet in a conveying direction; a separator arranged to be opposed to the first roller and configured to nip the sheet and to separate the sheet from other sheets; a multiple sheet sensor arranged in a downstream position with respect to the first roller and configured to sense presence of multiple sheets, the multiple sheet sensor including an emitter and a receiver; and a second roller arranged in a downstream position with respect to the multiple sheet sensor and configured to convey the separated sheet, is provided. A component being at least one of the emitter and the receiver is arranged in an outer side position with respect to the separator, and at least a part of the component is arranged in an inner side position with respect to the second roller. | 05-30-2013 |
20130168919 | DOCUMENT CONVEYING DEVICE FOR CONVEYING DOCUMENT AND IMAGE FORMING APPARATUS INCLUDING THE DOCUMENT CONVEYING DEVICE - A document conveying device includes a document conveying unit, a controller, first and second document detectors, a pulse count detector, and a determining unit. The first document detector is located on a feeding path along which a document is fed by the document conveying unit, and detects a document leading edge. The second document detector is located at a position different from that of the first document detector in both a document feeding direction and a direction orthogonal thereto, and detects the document leading edge. The determining unit determines whether the number of pulses detected by the pulse count detector during the period from detection of the document leading edge by one of the first and second document detectors to detection of the document leading edge by the other exceeds a predetermined value. If the number of pulses exceeds the predetermined value, the controller stops the document feeding operation. | 07-04-2013 |
20140084535 | High Speed Sheet Feeder Sheet Spacing System and Method - A document system and method of moving documents of a stack. The system operates to move documents by rotating a feed wheel and a transport wheel to move a document in a feed direction. The space between documents is maintained by controlling the speed of the feed wheel and the transport wheel independently. | 03-27-2014 |
20140361482 | SHEET DETECTING APPARATUS, SHEET CONVEYING APPARATUS, AND IMAGE FORMING APPARATUS - A sheet detecting apparatus including: a detection unit including a lever member having an abutment surface abutting a conveying sheet and a holding member configured to hold the lever member, the detection unit moved by the lever member pushed by the sheet; a first urging portion configured to urge the holding member to a waiting position after the sheet is separated from the abutment surface; a support portion configured to support the lever member movable with respect to the holding member to move the lever member to a retracted position for allowing the sheet to pass the lever member contacting a surface of the sheet when the holding member is in the waiting position; and a second urging portion configured to urge the lever member so that the lever member is moved from the retracted position to a position in which the abutment surface abuts a succeeding sheet. | 12-11-2014 |