Abstract: An image reading apparatus comprising: a reading unit; a feeding unit; a carriage; a motor-side transmission gear for transmitting power from a motor; a feeding unit-side transmission gear for transmitting the power to the feeding unit in a feeding reading of reading an image of the document fed by the feeding unit; a carriage-side transmission gear for transmitting the power to the carriage in a moving reading of reading an image of the document while moving the carriage; a switching gear configured to be switched between a feeding unit-side position and a carriage-side position; a sensor; and a control device configured to, when it is determined that the jam has occurred, drive the motor in a direction of releasing a meshed state between the feeding unit-side transmission gear and the switching gear.

Abstract: A mechanism for installing a media separation roller 16 includes a roller holder unit 90 and a unit installation part 70 on the conveyance path side. The roller holder unit 90 includes a first holder 100 that supports the retard roller 16, a second holder 110 connected to the first holder 100 pivotably on an axis of holder rotation, and an urging member 130 that urges the first holder 100 to the second holder 110 around the axis of holder rotation. The retard roller 16 and tension spring 130 are removably installable to the unit installation part 70 as a unit. Replacing the retard roller 16 is therefore simple.

Abstract: A feeding roller, a drive motor configured to drive the feeding roller, a control unit configured to perform one rotation control on the feeding roller, a sheet feeding path curved immediately after the feeding roller, a conveying roller pair provided in the sheet feeding path, and being set to a sheet conveyance speed higher than that of the feeding roller so as to eliminate a loop formed when a sheet passes through the sheet feeding path during one rotation control of the feeding roller; and a ratchet mechanism configured to stop the driving force from the drive motor and cause the feeding roller to be rotated by the sheet conveyed by the conveying roller pair when the feeding roller is pulled by the sheet being conveyed by the conveying roller pair in the course of the one rotation control of the feeding roller are provided.

Abstract: A sheet transporting apparatus is provided, including a transport mechanism provided with a roller, a motor, a controller, and a measuring input unit, wherein a transport route has a curved area for inverting the sheet, and the controller is constructed such that the control on the motor is executed by a closed loop control system by using a measured value of an control output at an initial stage of the transport of a sheet from a tray, and the control on the motor is switched from the control performed by the closed loop control system to control performed by an open loop control system on condition that a preset phenomenon arises after the sheet is taken out of the tray.

Abstract: A sheet sender 21A includes a lift plate 21P, a feed roller 21B and a registration roller 23. A biasing spring 21S applies an upward force onto the lift plate 21P. The lift plate 21P is moved upward by eccentric cams 60 which are arranged at axial ends of the feed roller 21B and rotationally driven by arm protrusions 211 which have come in contact with the eccentric cams 60. A rotational driving force is transmitted to a feed gear 220 and a registration gear 231 from a main gear 70 to rotate the feed roller 21B and the registration roller 23. A gear of the main gear 70 that engages with the feed gear 220 is idly rotatable within a predetermined angle with respect to a gear that engages with the registration roller 23.

Abstract: When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.

Abstract: An automatic document feeder includes an upper cover, a pick-up arm, a restriction element, and a document stopper. The pick-up arm is movable between a first position and a second position. A rotating shaft of the restriction element is pivotally coupled to the pick-up arm. A rotating shaft of the document stopper is pivotally coupled to the upper cover. Moreover, the rotating shaft of the restriction element and the rotating shaft of the document stopper are not in parallel with each other. When the pick-up arm is located at the first position, a swinging action of the document stopper is limited by the restriction element. When the pick-up arm is located at the second position, the swinging action of the document stopper is no longer limited by the restriction element, so that the document stopper can be freely swung.

Abstract: A sheet feeding device includes a separation roller, a first conveyance roller arranged on a downstream side of the separation roller and conveys the sheet separated by the separation roller, a second conveyance roller further conveys the sheet conveyed by the first conveyance roller, wherein the separation roller and the first conveyance roller are driven exclusively of each other by a first motor, and a control unit controls such that, when a trailing edge of a sheet passes through the separation roller while the sheet is being conveyed by the first conveyance roller and the second conveyance roller, the first motor makes a conveyance speed of the first conveyance roller higher than the conveyance speed thereof before the trailing edge of the sheet passes through the separation roller, and that, when the trailing edge of the sheet passes through the first conveyance roller, the first motor drives the separation roller.

Abstract: A feeding apparatus includes a pickup roller arranged to pick and feed a medium downstream along a conveying path, a separating roller arranged downstream to the pickup roller for advancing the medium downstream, a brake roller arranged opposite to the separating roller, and a pressing structure arranged opposite to the pickup roller and operable to swing toward or away from the pickup roller according to the rotating direction of the brake roller. When the brake roller rotates for feeding mediums downstream, the pressing structure moves toward the pickup roller and applies a normal force required for picking the medium. But when the brake roller stops rotating downstream because multiple mediums are fed between the brake roller and the separating roller, the pressing structure moves away from the pickup roller and stops applying normal force, so as to control the medium-picking process.

Abstract: An image forming apparatus has a main body having a sheet feed path and an opening. A sheet placing part defined in the main body. The sheet inserted through the opening is placed on the sheet placing part. A supply roller arranged to face the placing part and feeds the sheet placed on the sheet placing part in a sheet feed direction toward the sheet feed path, a frame arranged to face the sheet placing part and configured to support the supply roller, the frame having a protruded part protruded on an opening side with respect to the supply roller. An image forming unit is provided inside the main body. An inclined surface is formed on a side of the protruded part facing the sheet placing part, and the protruded part has an inclined surface facing the sheet placing part and inclined such that a distance between the inclined surface and the sheet placing part becomes gradually smaller toward the supply roller.

Abstract: A medium feeding device 1 includes a separating power generating device 7 which causes a brake roller 4 to generate a rotational load in a direction counter to a conveying direction. The device 7 includes a torque limiter 17 which generates a load of a predetermined upper limit torque T1, a torque limiter 18 which is arranged in series with the torque limiter 17 on a power transmission path to the brake roller 4 and generates a load of an upper limit torque T2 smaller than the torque T1, and an electromagnetic clutch 22 which switches between connection and disconnection between the power transmission path and a bypass route which bypasses the torque limiter 18. The device 7 can change the rotational load of the brake roller 4 to the torque T1 or the torque T2 by the switching of the electromagnetic clutch 22.

Abstract: There are provided a paper conveying apparatus which can drive paper set guides, paper feed rollers, retard rollers, and conveyor rollers by a single motor. The paper conveying apparatus includes a paper set guide for setting paper, a paper feed roller for feeding paper set at the paper set guide, a retard roller arranged facing the paper feed roller, a conveyor roller for further conveying paper fed by the paper feed roller, a motor for generating a drive force for driving the paper set guide, and a transmission mechanism, arranged straddling a transport path of the paper, for transmitting the drive force to the paper feed roller and the retard roller, wherein the conveyor roller is driven by the transmission mechanism.

Abstract: A sheet feeding mechanism includes a sheet feeding roller configured to feed an uppermost recording medium from stacked recording mediums, an inclined portion located at a downstream position of the sheet feeding roller in a conveyance direction of the recording medium and having a surface inclined with respect to the conveyance direction, and a restriction member configured not to contact the recording medium before the sheet feeding roller feeds the recording medium, and configured to contact the recording medium in a state where the recording medium is fed by the sheet feeding roller and conveyed along the inclined portion.

Abstract: A sheet conveyer device is provided. The sheet conveyer device includes a sheet tray, a feeder roller, a separator roller, a roller holder to rotatably support the feeder roller and to be coupled with the separator roller, spreading from a separator roller side toward a feeder roller side, to be movable between a first position and a second position, a manipulation arm configured to be coupled to the roller holder and to manipulate the roller holder to move between the first position and the second position, and a driving unit to drive the manipulation arm to move the roller holder. The manipulation arm is coupled to the roller holder at a coupled section, which is in a position between the feeder roller and the separator roller and in a position between two tangent planes which are common to the feed roller and the separator roller.

Abstract: The present invention is for separating upper and lower sheets. The sheet feeder includes a feed roller that conveys the sheet fed by a pickup roller in a sheet feeding direction and a retard roller rotated in a sheet feeding direction at a rotational velocity faster than that of the feed roller by interposing a torque limiter. Meanwhile, the retard roller is rotated at a velocity equal to that of the feed roller when a single sheet is nipped in the roller nip portion. The sheet feeder further includes a controller that performs control such that, when double sheet feeding occurs by the pickup roller, the sheet of the retard roller side projects ahead of the sheet of the feed roller side in the sheet feeding direction by virtue of the torque limiter, and then, the retard roller is rotated in a direction opposite to the sheet feeding direction.

Abstract: A paper feed unit for a printer to form an image on a print paper by an image former, the paper feed unit including: a paper feed tray that stacks print papers to be fed; a paper transfer route that transfers print papers; a register roller that is provided upstream of the image former in a paper transfer direction in the paper transfer route and holds a fed print paper to adjust a timing to transfer the fed print paper to the image former; a pick-up roller that transmits a print paper stacked in the paper feed tray to the register roller, the pick-up roller being smaller in width than a width of a print paper to be transmitted; and a regulator that comes into contact with a loose portion of a print paper loosened in a paper feed route in between the pick-up roller and the register roller.

Abstract: A sheet supply device includes registration rollers for feeding a print sheet to a print unit, feed rollers for feeding a print sheet to the registration rollers, and a controller for controlling the registration rollers and the feed rollers. The controller starts first rotation of the feed rollers to contact a leading edge of the print sheet to the registration rollers to form a slack with a predetermined slack amount, stops the first rotation after the slack is formed, starts rotation of the registration rollers after the first rotation is stopped to reduce a slack amount of the slack, and starts second rotation of the feed rollers after the rotation of the registration rollers is started so as to make the slack remained until a trailing edge of the print sheet passes through the feed rollers. According to the sheet supply device, noises during feeding print sheets can be reduced.

Abstract: 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.

Abstract: A sheet conveyer including a body, a conveyer to convey the sheet into a conveyer path formed in the body, a conveyer-supporting frame to support the conveyer, a first placement unit including a lifting plate movable between a separated position and an approximate position, and a lateral guide arranged on the lifting plate to be movable integrally with the lifting plate and slidably along a widthwise direction and configured to restrict a widthwise position of the sheet placed on the lifting plate and, is provided. The conveyer contacts the sheet placed on the first placement unit, when the lifting plate is in the approximate position, and conveys the contacting sheet into the conveyer path. The conveyer-supporting frame is formed to have an interference-avoidable dented section, in which the side guide on the lifting plate placed in the approximate position enters partly to avoid interference with the conveyer-supporting frame.

Abstract: The invention concerns a method for separating a stack of notes of value, in which the stack of notes of value is arranged in a separating position. Subsequently, a withdrawal element is driven such that it transports at least one marginal note of value of the stack of notes of value in a separating direction in the direction of a separating gap formed between a transport element and a counter run element. Also the transport element is driven such that it transports the note of value further in the separating direction. By means of a sensor unit arranged downstream of the separating gap the number of the notes of value withdrawn and transported through the separating gap is determined. The withdrawal element, the transport element and/or the counter run element are controlled depending on this determined number of notes of value withdrawn.

Abstract: A printing apparatus and a printing method with the object of preventing the feed of a sheet that is not the feeding target when performing sheet re-feeding.

Abstract: A sheet feeding unit having a holding section; a separation pad that contacts a sheet and imparts a conveyance resistance to the sheet; a separation roller that imparts a conveyance force to the sheet; a drive source that supplies driving force to the separation roller; a conveyance roller disposed at a position downstream of the separation roller, wherein the conveyance roller rotates at a circumferential speed greater than a circumferential speed of the separation roller, to impart conveyance force to the sheet, and wherein the conveyance roller and the separation roller are disposed so as to simultaneously contact the same sheet; and a drive shutoff unit, which shuts off the driving force supplied to the separation roller when the conveyance roller imparts the conveyance force to the sheet so the separation roller rotates in a following manner with the conveyance of the sheet.

Abstract: 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.

Abstract: A sheet sender 21A includes a lift plate 21P, a feed roller 21B and a registration roller 23. A biasing spring 21S applies an upward force onto the lift plate 21P. The lift plate 21P is moved upward by eccentric cams 60 which are arranged at axial ends of the feed roller 21B and rotationally driven by arm protrusions 211 which have come in contact with the eccentric cams 60. A rotational driving force is transmitted to a feed gear 220 and a registration gear 231 from a main gear 70 to rotate the feed roller 21B and the registration roller 23. A gear of the main gear 70 that engages with the feed gear 220 is idly rotatable within a predetermined angle with respect to a gear that engages with the registration roller 23.

Abstract: An image forming apparatus includes: a recording medium cassette storing recording medium; an image forming unit, a feed unit; an upper frame that supports the image forming unit and the feed unit; and a lower frame in which the recording medium cassette is detachably attached, the upper frame being disposed on the lower frame, and the lower frame having rigidity lower than the rigidity of the upper frame, the lower frame including a rail for guiding the recording medium cassette to a predetermined receiving position, wherein the feed unit has a groove portion formed along a direction parallel to a horizontal direction, the recording medium cassette has a first convex portion which is fitted in the groove portion when the recording medium cassette is attached in the lower frame, the recording medium cassette having a second convex portion which is contact with a portion of the rail of the lower frame.

Abstract: An image forming apparatus includes a main body, a recording sheet receiving portion configured to receive a recording sheet, an image forming portion configured to form an image on the recording sheet, a particular feed roller configured to feed the recording sheet toward the image forming portion, and a holding frame configured to rotatably support the particular feed roller such that the particular feed roller is exposed toward the recording sheet receiving portion. The holding frame has a roller receiving portion configured to receive the particular feed roller therein and a replacement opening for exposing the particular feed roller toward an opposite side of the holding frame relative to the recording sheet receiving portion. The particular feed roller is configured to be attached to and removed from the holding frame via the replacement opening on the opposite side of the holding frame relative to the recording sheet receiving portion.

Abstract: An image recording apparatus, including: a drive source foratable forwardly and reversely; a first roller rotatable in a first direction by the forward rotation of the drive source to convey a conveyed medium and rotatable in a second direction reverse to the first direction by the reverse rotation of the drive source; a recording device; a second roller; a first power transmitter which transmits a first-direction driving power to the second roller and not to transmit a second-direction driving power to the second roller, wherein the first-direction driving power is a rotational driving power of the first roller rotating in the first direction, and the second-direction driving power is a rotational driving power of the first roller rotating in the second direction; and a second power transmitter which transmits the second-direction driving power to the second roller and not to transmit the first-direction driving power to the second roller.

Abstract: An image forming apparatus includes a sheet feeding device that corrects skew of a sheet before feeding the sheet to a transfer position for image formation. The sheet feeding device comprises a driver, a feeder roller unit provided with a feeder roller rotationally driven by the driver and a separation roller, and two resist roller units each provided with a primary and a secondary resist roller. The resist roller units cause formation of a loop in the sheet between the resist roller units and the feeder roller unit during skew correction. When viewed in a direction of a rotational axis of the feeder roller, the first resist rollers and the feeder roller overlap at least partially, and the pressing member and the second resist rollers do not overlap. The first resist rollers and the feeder roller occupy different positions with respect to the direction of the rotational axis.

Abstract: A fully active retard feeder is configured to move a partially feed sheet back into a feed tray in response to a jam either in the nip of the feed head or in a location downstream of the feed head and thereby ease user jam clearance.

Abstract: A feeding roller, a drive motor configured to drive the feeding roller, a control unit configured to perform one rotation control on the feeding roller, a sheet feeding path curved immediately after the feeding roller, a conveying roller pair provided in the sheet feeding path, and being set to a sheet conveyance speed higher than that of the feeding roller so as to eliminate a loop formed when a sheet passes through the sheet feeding path during one rotation control of the feeding roller; and a ratchet mechanism configured to stop the driving force from the drive motor and cause the feeding roller to be rotated by the sheet conveyed by the conveying roller pair when the feeding roller is pulled by the sheet being conveyed by the conveying roller pair in the course of the one rotation control of the feeding roller are provided.

Abstract: When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.

Abstract: A sheet feeding device includes a first roller configured to feed a sheet in a first direction along a first feed path, a second roller arranged on a downstream side of the first roller and configured to feed the sheet in the first direction along the first feed path, a sheet detection unit arranged between the first roller and the second roller. A rotation amount of the second roller from detection of the leading end of the sheet by the sheet detection unit to arrival of the sheet at a predetermined position on the downstream side is compensated based on the rotation speed of the first roller within a first period, which is a period from start of feeding of the sheet as the first roller is started to be driven to the detection of the leading end of the sheet by the sheet detection unit.

Abstract: An automatic document feeder includes a paper pick-up device, a first roller assembly, and a second roller assembly. The first roller assembly includes a first shaft, a first roller, and a power coupling device. When the power coupling device is connected with the first shaft and the first roller for transmitting a paper, the first roller is driven to be rotated by the first shaft. When the front edge of the paper is moved to the second roller assembly, the first roller is driven to be rotated at a higher speed by the paper. Consequently, a power connection between the first roller and the first shaft is released by the power coupling device. Then, the first roller reaches a static status in order to correct the skew phenomenon of the next paper.

Abstract: A sheet conveyor apparatus may include a sheet support portion, a first roller that feeds sheets supported on the sheet support portion, and a second roller disposed downstream of the first roller and rotatable about a rotation axis. The apparatus further include a holder supported swingably about the rotation axis, a wall opposite the sheet support portion with the holder interposed therebetween, and a pressing member disposed between the wall and the holder to press the first roller toward the sheet support portion. The pressing member includes a holding member movably supported by the holder to contact the wall, and a spring disposed between the holding member and the holder to apply a biasing force causing the holding member and the holder to move away from each other while maintaining a state in which the holding member contacts the wall regardless of swing of the holder about the rotation axis.

Abstract: An automatic document feeder includes an upper cover, a document pick-up module, and a conveying channel. The upper cover has a first hooking element. The document pick-up module is arranged between the upper cover and the conveying channel. In addition, the document pick-up module has a second hooking element. When the automatic document feeder is operated in a standby mode, the document pick-up module is swung to a position near the upper cover and the second hooking element is engaged with the first hooking element, so that the document pick-up module is fixed on the upper cover. Since the document pick-up module is not contacted with the document when the automatic document feeder is operated in the standby mode, the possibility of causing an erroneous action of the document pick-up module will be eliminated.

Abstract: A medium loader device includes a first medium loader member configured to load a medium, a second medium loader member usable as an extension of the first medium loader member, and a support member configured to support the first medium loader member and the second medium loader member and to form a storage area capable of storing the second medium loader member between the support member and the first medium loader member. The support member includes a holder configured to hold the first medium loader member such that the first medium loader member moves relative to the support member when the second medium loader member is moved from a usage position where the second medium loader member is used as the extension of the first medium loader member to a storage position where the second medium loader member is stored in the storage area.

Abstract: An image forming apparatus includes a sheet cassette, a sheet feed roller, and a separating blade. An image forming section and a sheet conveying path for conveying a sheet to the image forming section are placed in a position within the width of a cassette body defined in a sheet feeding direction and above the cassette. The tip of the separating blade is placed in a portion of stacked sheets accommodated in the cassette between a front end portion and a rear end portion of the cassette. The sheet feed roller is placed in a position between the front end portion and the rear end portion of the cassette and apart from the tip of the separating blade toward the rear end portion.

Abstract: A sheet feeding device includes a separation roller, a first conveyance roller arranged on a downstream side of the separation roller and conveys the sheet separated by the separation roller, a second conveyance roller further conveys the sheet conveyed by the first conveyance roller, wherein the separation roller and the first conveyance roller are driven exclusively of each other by a first motor, and a control unit controls such that, when a trailing edge of a sheet passes through the separation roller while the sheet is being conveyed by the first conveyance roller and the second conveyance roller, the first motor makes a conveyance speed of the first conveyance roller higher than the conveyance speed thereof before the trailing edge of the sheet passes through the separation roller, and that, when the trailing edge of the sheet passes through the first conveyance roller, the first motor drives the separation roller.

Abstract: A stopper, a paper feeding device including an inner and outer cases, a first and second axels, a first and second rollers, a pair of stoppers and a tray, and a multi-function printer are provided. The outer case has two side walls and two protrusions disposed on the side walls. The inner case is between the two side walls. The first axel pivots the inner case and the side walls. The first roller covers the first axel. The stoppers are disposed at outer side of the side walls, wherein each of the stoppers has a C-ring, a connecting portion and a stopping portion. Each C-ring pivoted to the first axel has a first and second ends, and the protrusions prop against to the first ends. The second axel pivots the inner case, and the second roller covers the second axel. The tray is disposed below the first roller.

Abstract: A device for processing and for transporting flat mail items such as documents and/or letters inserted into envelopes, samples, cards, etc., includes a transport route, formed by transport rolls (5, 6, 7) of a transport mechanism (3), one end of this route being configured to load a separation unit (9) with mail items (2) for individual processing. The device includes a separation unit (9), which is designed with a drive roll (6), supported rotatably on a horizontal axis of rotation and extending transversely to the transport direction. The drive roll acts frictionally on the bottom surface of the mail item (2) and cooperates with a queuing mechanism (11), which is installed above (6) and offset from the drive roll in the downstream direction to hold back excess mail items.

Abstract: An automatic document feeder includes a paper pick-up device, a first roller assembly, and a second roller assembly. The first roller assembly includes a first shaft, a first roller, and a power coupling device. When the power coupling device is connected with the first shaft and the first roller for transmitting a paper, the first roller is driven to be rotated by the first shaft. When the front edge of the paper is moved to the second roller assembly, the first roller is driven to be rotated at a higher speed by the paper. Consequently, a power connection between the first roller and the first shaft is released by the power coupling device. Then, the first roller reaches a static status in order to correct the skew phenomenon of the next paper.

Abstract: When a retard roller is rotating in a sheet feeding direction, the rotation is transmitted to a pickup roller and the pickup roller rotates in a direction for conveying the sheet. When the retard roller is rotating in a direction opposite to the sheet feeding direction or is stationary, the pickup roller does not feed the sheet. Therefore, in a successive feeding operation, the sheet to be fed next is always conveyed such that the leading end thereof reaches a nip position between a feed roller and the retard roller. Therefore, the intervals between the sheets are uniform in the successive feeding operation.

Abstract: In order to provide a sheet conveying apparatus and an image forming apparatus capable of alleviating a bumping noise generated between a sheet and an inner guide member when the sheet passes through a curved sheet conveying path, a pair of intermediate conveying rollers is arranged in positions corresponding to both lateral sides in a width direction of the feeding roller and subsidiary feeding roller in a sheet conveyance direction. In addition, the subsidiary intermediate conveying roller abuts on the intermediate conveying roller with an inclination such that the sheet conveyance force is directed to the center of the sheet conveying path in a width direction. As a result, the sheet makes contact with the inner guide member of the facing guide member of the sheet conveying path by undulating the sheet in a width direction when the sheet is extracted and conveyed by the pair of intermediate conveying rollers.

Abstract: An image reading device and an image forming apparatus having the same. The image reading device includes an scanning glass, a white bar arranged opposite the scanning glass, and a drive roller provided at the white bar, the drive roller being rotated upon receiving power to allow a document to pass between the scanning glass and the white bar.

Abstract: A sheet feeding apparatus and an image forming apparatus, which can improve sheet feeding performance at low cost without degrading usability, are provided. Projections 42T and 43T are provided in abutting surfaces, which abut on lateral end of a sheet S, of a pair of lateral-end regulating portions 42 and 43 provided opposite each other. The projections regulates climbing over the lateral-end regulating portions of the sheet S when the sheet S is fed. Guide projections 100a and 100c are provided opposite each other along a cassette attaching direction in an inner wall surface of an attaching space, in which a sheet feeding cassette of an apparatus body is attached. When the sheet S climbs over the projections in feeding the sheet S, the sheet S is abutted on the guide projections to regulate upward movement of the sheet S.

Abstract: An image forming device including a pickup roller and a scraper roller configured to send out a print sheet to a feed route, a before-registration roller configured to send out a print sheet to a registration roller, and a control unit configured to independently control the transfer speed of the print sheet at each point based on operation patterns relating to the pickup roller and the scraper roller, and an intermediate transfer roller configured to transfer the print sheet between the before-registration roller and itself, wherein the operation pattern is set based on a relationship between a distance from the intermediate transfer roller to the before-registration roller or a distance from the intermediate transfer roller to the registration roller and a length of the print sheet.

Abstract: A supply roller for sending a piece of sheet from pieces of sheets stacked within a cassette towards a sheet guide and a pair of feed-in rollers for sending the piece of sheet supplied from the sheet guide towards a printing region are provided within a printer. The pair of feed-in rollers has a feed-in drive roller driven by a motor and a feed-in driven roller driven by the feed-in drive roller. A sending speed of the pair of feed-in rollers is faster than a sending speed of the supply roller, and a sending force of the pair of feed-in rollers is stronger than a sending force of the supply roller. A controller of the printer controls the rotation of the supply roller and the pair of feed-in rollers according to a procedure that does not rely on a position of the sheet sent by the supply roller and the pair of feed-in rollers during the continuous feeding mode.

Abstract: In general, in a sheet feeding device of embodiments, a shaft connects through an one-way clutch structure to a conveying roller, rotates in a first direction and a second direction opposite to the first direction, transmits the torque to the conveying roller to cause the conveying roller to rotate in the first direction if the shaft rotates in the first direction. The shaft does not transmit the torque to the conveying roller if the shaft rotates in the second direction. The shaft limits the rotation of the conveying roller in the second direction while the shaft is in a rotation-stop state. A controller has a second mode in which the shaft is rotated in a second direction to allow rotation of the conveying roller in the second direction.

Abstract: A paper feeding mechanism mounted to a shell includes a pickup mechanism, a transporting mechanism, a separation mechanism and a one-way clutch mechanism. The pickup mechanism includes a pickup motor having a rotating roller, a pickup roller and a pickup wheel. The transporting mechanism includes a transporting motor, a transporting roller, a transporting wheel and a transporting gear. The separation mechanism includes a separation roller, a separation gear and a separation wheel. The one-way clutch mechanism includes a one-way axle, a wiggling arm, a restoration elastic element fastened between the wiggling arm and the shell, and a releasing gear. The one-way axle passes through one end of the wiggling arm. The rotating roller of the pickup motor passes through the one-way axle. The releasing gear mounted to the other end of the wiggling arm is engaged with the transporting gear and the separation gear.

Abstract: A bill discriminating and counting apparatus in which a plurality of bills with different sizes are filled between side hopper members and fed into a transport path by a feeding mechanism. The feeding mechanism comprises a plurality of rollers disposed in a bilaterally symmetrical state. The plurality of rollers are arranged so that, when a distance between the side hopper members is adjusted according to the longitudinal dimension of a bill with the maximum dimension in the longitudinal direction and a bill with the minimum dimension in the longitudinal direction is disposed at a position where the bill is brought into contact with one of the side hopper members, at least a part of the rollers installed on the opposite side of the side hopper member where the bill is brought into contact therewith is brought into contact with the bill. Also, the feeding mechanism comprises a guide member guiding the bill to the inlet of the transport path.