Abstract: A sheet feeding device includes a sheet feed tray, a chute having first and second guides, first and second rollers arranged on the first guide, first and second contact members protruded from the second guide and urged to contact the first and second rollers, respectively, and a sheet sensor arranged between the first roller and the second roller. A controller controls a motor to rotate the first and second rollers in a first direction in which the sheet is fed from the second roller to the first roller when the controller receives a signal from the sensor, and controls the motor to stop the rotation of the first and second rollers when the signal from the sensor is terminated, and then rotate the first and second rollers in a second direction in which the sheet is fed from the first roller to the second roller.

Abstract: A paper feeding apparatus for a printer includes a motor; a first roller assembly includes a first roller having a first end, a second end and an axis; a first gear disposed at the first end of the first roller, wherein the first gear is configured to be driven by the motor; and a second gear disposed at the second end of the first roller, wherein the second gear having a first bevel gear; a drive shaft including a first end, a second end and an axis, wherein the first end of the drive shaft having a second bevel gear that is configured to engage with the first bevel gear of the second gear of the first roller assembly, and wherein the second end of the drive shaft having a third bevel gear; and a second roller assembly having a second roller and a fourth bevel gear that is configured to engage with the third bevel gear at the second end of the drive shaft.

Abstract: A compact, desktop document processor for use on a counter-top is provided. A low-profile document feeding machine includes a feeder, a hopper, at least one processing device, and an output pocket. The apparatus further includes a reversible motor including a shaft, a first one-way clutch, a second one-way clutch, a nudger device, and a jogging device. The nudger device is drivingly connected to the motor through the first one-way clutch such that driving the motor in a forward direction drives the nudger device to urge a document from a document stack in the hopper into the feeder. The jogging device is drivingly connected to the motor through the second one-way clutch such that driving the motor in a reverse direction drives the jogging device to align the documents in the document stack prior to feeding.

Abstract: A document feeder configured to feed a document in a first direction includes a tray configured to load a document or a set of documents on a loading surface thereof, first and second contact portions disposed to contact the document on the loading surface, and a detecting unit configured detect whether a document is loaded on the loading surface, the detecting unit including an actuator provided between the first contact portion and the second contact portion, the actuator projecting upward from the loading surface and being configured to be moved down due to contact with the document on the loading surface.

Abstract: A sheet feeding apparatus includes a switchable transmission mechanism disposed between a pickup roller and a driving source, and switches the driving source between a first state for rotating in the forward direction to rotate the pickup roller, and a second state for not rotating the pickup roller, the forward direction is opposite to a direction in which the driving source is rotated to rotate a feeder roller in a sheet feed direction. The sheet feeding apparatus also includes a control portion rotating the driving source in the forward direction to rotate the pickup roller in a sheet supply direction, and switches the switchable transmission mechanism between the first state, when a sheet is supplied from a sheet holding portion, and the second state, when the sheet is fed by the feeder roller.

Abstract: A paper pick-up mechanism for a feeder includes a pick-up roller, a pick-up roller shaft, a separation roller, a transmission shaft, a gear set and a transmission gear shaft. Two one-way clutches are respectively coupled to the transmission shaft and the transmission gear shaft in parallel. When the transmission shaft is rotated in a direction opposite to a sheet-feeding direction, the gear set, through the cooperation of the two one-way clutches are used as a planetary gear set to lift up the pick-up roller.

Abstract: An image forming apparatus includes an external gear to which a rotating force of a resist gear is transmitted, a ratchet for transmitting a rotating force from the external gear to a paper feed roller or releasing the transmission, and a ratchet arm having a claw engaged with the ratchet to transmit a rotation of the external gear, thereby rotating the paper feed roller, and a claw engaged with a slit provided on a boss of the paper feed roller to turn the paper feed roller toward a rotation start position and removing the claw from the ratchet to stop the paper feed roller, and the boss is provided with an offset bottom peripheral surface to be moved with the claw entering to stop the rotation of the paper feed roller when a resist sensor detects a tip of a recording paper.

Abstract: An image recording apparatus including: a body; a supply tray attached to the body for putting a recording sheet thereon; a recording mechanism provided in a middle of a feed path defined in the body for recording an image on the recording sheet; a feeding mechanism which has an arm pivotably supported at one of opposite ends thereof and a feeding roller rotatably provided in the other of the opposite ends of the arm, and which is configured such that the recording sheet is fed toward the recording mechanism by rotating of the feeding roller held in contact with the recording sheet; a discharge opening provided in the body for discharging the recording sheet therethrough; a cover supported by the body to be pivotable between an open position and a closed position; and a cover-arm interlock mechanism which permits the arm to pivot such that the feeding roller contacts the recording sheet when the cover is positioned at the open position, and which positions the arm such that the feeding roller is away from the

Abstract: An automatic sheet feeding apparatus includes a pick-up mechanism, a sheet transporting mechanism, a power source and a clutch. The sheet transporting mechanism transports a sheet picked up by the pick-up mechanism through and out of a passageway. The power source for driving the pick-up mechanism includes a power output shaft and a first transmission gear for respectively outputting and transmitting power. The clutch includes a second transmission gear and a power coupling component. The second and first transmission gears are disposed coaxially. The power coupling component is coaxially disposed between the first transmission gear and the second transmission gear and is coupled to the first transmission gear. The power coupling component reciprocates back and forth along an axis to selectively couple and drive the second transmission gear. The second transmission gear is coupled to the pick-up mechanism, and the power source selectively drives the pick-up mechanism through the clutch.

Abstract: [Object] To provide a clutch apparatus that can smoothly switch from a clutch engaged state to a clutch non-engaged state, while tooth jump does not occur even with a small-sized clutch apparatus. [Solving Means] A recessed portion 153 is provided in a cam face of a cam 45. A cam shaft 13 is configured to pivot by a predetermined amount as a cam follower 51 is fitted in the recessed portion, and, when the cam initiates to engage the cam follower, it enters a clutch engaged state. A driven side gear 99 is pivoted by a predetermined amount as the cam follower is fitted in the recessed portion and, thereby, a clutch member 93 is rotated by a predetermined amount in a direction in which a toothed portion 94 is spaced apart from a drive side gear 92.

Abstract: A common driving source transmits a drive force to a driving unit that drives a feeding unit and a conveying unit. The driving source is a motor that rotates in either of a normal direction and a reverse direction. The feeding unit includes a mechanical drive-blocking mechanism in its driving sequence. The conveying unit includes a two-system driving sequence and a mechanical drive-blocking mechanism in the driving sequence so as to rotate in one direction regardless of a rotating direction of the driving source. A reduction ratio of each driving sequence in the conveying unit is identical.

Abstract: A locking device locks or separates a first paper feed tray to a second paper feed tray in a state where the first paper feed tray and the second paper feed tray being arranged in parallel at a storage position of an image forming apparatus. The locking device includes an engaging mechanism that can be set to an interlocked state. When the engaging mechanism is in an interlocked state, and when a drawing tray is drawn out from the storage position, a drawn tray is drawn out after the drawing tray is drawn out for a predetermined distance from the storage position.

Abstract: A media feedpath having a feed assist roller, comprises a media feedpath having a C-shaped portion, a media input and a feed roll nip, an input roller feeding media from the media input, a feed assist roller downstream of the C-shaped portion of the media feedpath, the feed assist roller assisting media indexing through the media feedpath on a single side and without an opposed pinch roller, the feed roll nip having a driven roller and a feed roll pinch roll opposite the driven roll, the feed assist roller being driven by a toggle gear transmission from the driven roller of the feed roll nip, the gear train adapted for toggling to operably engage or disengage the feed assist roller depending on a driving direction of the driven roller of the feed roll nip.

Abstract: An image forming apparatus has a chassis, a feed roller rotatably supported by the chassis, a feed roller gear relatively unrotatably coupled to the feed roller, a motor that drives the feed roller, a drive gear that receives driving force from the motor, and an intermediate gear having a gear portion that engages the drive gear and the feed roller gear and an axle portion that is rotatably supported to the chassis via intermediate gear bearings. At least one of the intermediate gear bearings includes a substantially circular inner surface and a stepped portion that is depressed from the circular inner surface. The axle portion of the intermediate gear is supported by the stepped portion while the intermediate gear transmits driving force the motor from the drive gear to the feed roller gear during printing.

Abstract: A paper pick-up mechanism for a feeder includes a pick-up roller, a pick-up roller shaft, a separation roller, a transmission shaft, a gear set and a transmission gear shaft. Two one-way clutches are respectively coupled to the transmission shaft and the transmission gear shaft in parallel. When the transmission shaft is rotated in a direction opposite to a sheet-feeding direction, the gear set, through the cooperation of the two one-way clutches are used as a planetary gear set to lift up the pick-up roller.

Abstract: A device for feeding a processing section with printed products includes a magazine and a feeding mechanism that includes a gripping mechanism and a conveying mechanism for removing the printed products from the magazine and feeding them to the processing section. The gripping mechanism and the conveying mechanism are driven so that the gripping mechanism can be accelerated in an angular region for a catch-up operation while the speed of the conveying mechanism remains constant.

Abstract: An automatic document feeder for an image forming apparatus comprising a separation roller for separately carrying a plurality of paper sheets picked by a pickup roller, a feeding roller for carrying the paper sheets, a discharge roller for discharging the scanned paper sheets, and a transmission unit for transmitting a driving force from a driving motor. The transmission unit comprises an internal roller installed on the same axis as the feeding roller, the internal roller having an internal gear, a swing arm rotatably attached to a bracket, the bracket being inserted into the internal roller, and a swing gear rotatably installed on one side of the swing arm, the swing gear being engaged with the internal gear for rotating the internal roller.

Abstract: A paper feeding mechanism for an inkjet printer having a rapid printing speed and which continuously supplies and discharges sheets of paper during alignment operations of the feed roller. The paper feeding mechanism includes a drive gear coaxially coupled to a shaft of drive roller for transferring a sheet to a printing zone, a feed gear coaxially coupled to a shaft of the feed roller and operating to align the sheet transferred from the drive roller, and a discharge gear coaxially coupled to a shaft of discharge roller for discharging the sheet that has passed through the printing zone. The paper feeding mechanism further includes a motor for supplying a rotation power to the shaft of the feed roller, and a power transfer unit for transferring the rotation power of the shaft of the feed roller to the drive gear and the discharge gear.

Abstract: An apparatus for feeding documents in a facsimile includes a pickup roller for picking up documents one by one, a white roller that faces a read module and rotates, the read module for reading data from the documents transferred by the pickup roller, a discharge roller for discharging the documents after the documents are passed through the white roller and the read module, a driving unit, a power transmission mechanism for selectively transmitting a power of the driving unit either only to the pickup roller, or to all of the pickup roller, the white roller and the discharge roller simultaneously, and a controller for controlling the power transmission mechanism to selectively transmit the power either one of the pickup roller, the white roller, and the discharge roller.

Abstract: A sheet supply apparatus supplies a sheet to an image forming apparatus. The sheet supply apparatus includes a sheet loading device for loading the sheet, a sheet stacking device for stacking the sheet to be loaded on the sheet loading device, a sheet feeding device provided at a front end of the sheet loading device in a sheet supplying direction for feeding the sheet loaded on the sheet loading device, a sheet carrying device provided at a rear end of the sheet loading device in the sheet supplying direction for carrying the sheet stacked on the sheet stacking device into the sheet loading device, a sheet detecting device for detecting whether an image is formed on at least one side of the sheet loaded on the sheet loading device, and a supporting device for supporting the sheet loading device to be extractable from the apparatus.

Abstract: A replaceable roller bogie for a single sheet feeder includes pre-feed and separation rollers mounted on a frame which also has a frame positioning lever thereon. Roller drive gears are mounted between spaced plates on the frame and include a pre-feed roller clutch gear with elastomeric teeth which is mounted in slots on the frame which limit motion travel of the clutch gear to prevent over engagement of gear teeth on the clutch gear with gear teeth on the pre-feed roller drive gear. The replaceable bogie is pivotally supported on the sheet feeder and held in place by a manually operable release and latch mechanism.

Abstract: A media conveying mechanism located in a media data recorder for conveying media mainly includes a driving motor to provide driving power needed. A first clutch to control the operation of a pickup roller. A second clutch to control rotation direction of an intermediate roller, a sensor to detect the conveying process of the media and control the operation of the second clutch. By deploying the two clutches, conveying quantity of the media in a unit time period can be effectively improved.

Abstract: A replaceable roller bogie for a single sheet feeder includes pre-feed and separation rollers mounted on a frame which also has a frame positioning lever thereon. Roller drive gears are mounted between spaced plates on the frame and include a pre-feed roller clutch gear with elastomeric teeth which is mounted in slots on the frame which limit motion travel of the clutch gear to prevent over engagement of gear teeth on the clutch gear with gear teeth on the pre-feed roller drive gear. The replaceable bogie is pivotally supported on the sheet feeder and held in place by a manually operable release and latch mechanism.

Abstract: A paper sheet conveying apparatus and method for an image information processor in which a paper sheet with image information recorded thereon can be prevented from a skew carriage. The paper sheet conveying apparatus includes a driving motor which is controlled to be shifted from a forward revolution mode to a reverse revolution mode or vice versa. The paper conveying apparatus further includes a power cleaving means that selectively supplies the power to a first power transmitting system and to a second power transmitting system.

Abstract: The present invention relates to a sheet material conveying apparatus comprising first conveying means for conveying a sheet, material second conveying means for conveying, on a downstream side in a sheet material conveyance direction of the first conveying means, the sheet material and a plurality of guide members for forming a curving conveyance route located between the first conveying means and the second conveying means. The guide member forms the curving conveyance route located on an inner side among the guide members is a rotary body rotatably, which is arranged with no pressing member for pressing the sheet material to the rotary body.

Abstract: A replaceable roller bogie for a single sheet feeder includes pre-feed and separation rollers mounted on a frame which also has a frame positioning lever thereon. Roller drive gears are mounted between spaced plates on the frame and include a pre-feed roller clutch gear with elastomeric teeth which is mounted in slots on the frame which limit motion travel of the clutch gear to prevent over engagement of gear teeth on the clutch gear with gear teeth on the pre-feed roller drive gear. The replaceable bogie is pivotally supported on the sheet feeder and held in place by a manually operable release and latch mechanism.

Abstract: A paper sheet conveying apparatus and method for an image information processor in which a paper sheet with image information recorded thereon can be prevented from a skew carriage. The paper sheet conveying apparatus includes a driving motor which is controlled to be shifted from a forward revolution mode to a reverse revolution mode or vice versa. The paper conveying apparatus further includes a power cleaving means that selectively supplies the power to a first power transmitting system and to a second power transmitting system.

Abstract: A paper sheet conveying apparatus and method for an image information processor in which a paper sheet with image information recorded thereon can be prevented from a skew carriage. The paper sheet conveying apparatus includes a driving motor which is controlled to be shifted from a forward revolution mode to a reverse revolution mode or vice versa. The paper conveying apparatus further includes a power cleaving means that selectively supplies the power to a first power transmitting system and to a second power transmitting system.

Abstract: A method and apparatus for end-to-end advancement of sheet media in an automatic document feeder suitable for use with a scanner are disclosed. The method involves driving a drive roller in a forward direction to advance a sheet medium section-by-section at a substantially uniform speed across a scan zone of the scanner. Such driving involves accelerating the sheet medium to reach the uniform speed, maintaining the speed while a section is scanned, decelerating the sheet medium to a stop after the section is scanned and reversing the sheet medium by a predetermined distance to allow it to be subsequently accelerated. To prevent an overlap of sheet media during such back and forth advancement of a sheet medium, a pick roller is prevented from reversing when the drive roller is reversed. When the drive roller is driven in the forward direction, the pick roller is only driven after a predetermined delay.

Abstract: Device for separating stacked flat bag pieces, comprising a supporting structure, which is pivot-mounted in a frame and is provided with a drive, and on which suction rollers can be rotated, whose drive is in a direction of rotation opposite to the supporting structure's direction of rotation. A stacking cassette is positioned in such a manner at the enveloping cylinder, described by the rows of suction elements or suction rollers that each row of suction elements in each roller pulls a bag piece from said cassette. To prevent the trailing side edges of the bag pieces from folding over, the bag pieces are held in the stacking cassette with offset cuts, facing outwardly in the direction of the axis of rotation.

Abstract: A sheet feeding apparatus having a feeding device including a feeding member for feeding a sheet from a rest stand and a support member for supporting the feeding member, in which the support member swings about a rotary shaft provided at one end of the support member to thereby move the feeding device up and down. A force applying unit provided on the rotary shaft brings the feeding member into contact with the sheet on the rest stand with a predetermined force. The predetermined force is smaller than a force due to the gravitational force of the feeding device against the sheet on the rest stand.

Abstract: An apparatus and method for delivery of sheet media to a printer includes a chassis, a drive motor, a media tray with elevatable pressure plate, a plurality of pick rollers situated opposite movable pinch rollers that come into contact with the pick rollers to form a roller assembly therebetween when in an extended position. A movable separator forms a throat between one of the pick rollers and the leading edge of the separator when it is in an extended position. A common transmission is used to simultaneously position the pinch rollers, separator, and the pressure plate. The apparatus also includes a media retarder for preventing multiple sheets of media from advancing through the apparatus at the same time. The method includes delaying the rotation of the pick rollers until a stack of media has been raised to press against the pick rollers, and the pinch rollers and separator are in an extended position.