A medium feeding apparatus capable of switching between a first feeding mode and a second feeding mode, in which in the first feeding mode, when a first detection section positioned downstream of a feeding roller in a medium feeding direction detects passage of a trailing end of a preceding medium in a feeding standby state in which driving of the feeding roller that feeds the medium is stopped, starting the driving of the feeding roller to perform feeding of a succeeding medium, and in the second feeding mode, when a second detection section positioned downstream of the first detection section in the medium feeding direction detects the passage of the trailing end of the preceding medium in the feeding standby state, starting the driving of the feeding roller to perform the feeding of the succeeding medium.

A paper blocking device includes a pick roller, a cover plate, a paper blocking component, a driving mechanism, a gear mechanism and a motor. The cover plate has a pick roller window penetrated the cover plate. The pick roller is positioned in the pick roller window. The paper blocking component is coupled to the cover plate. The driving mechanism has a driving shaft and a cam being connected to the driving shaft. The cam is connected to the paper blocking component. The gear mechanism is connected to the driving shaft. The motor is connected to the gear mechanism. As described above, the paper blocking device can block papers and align the leading edges of papers.

A paper feeding device 100 includes a support hook 5 that supports a lower edge of a front side of a bundle of stacked paper sheets X, and a paper trailing edge storing part 32 provided between a lower end of the abutting surface 31 and the paper feeding table 11, and the paper feeding device retracts the lowermost layer paper sheet of the loaded paper sheets so as to store its trailing edge in the paper trailing edge storing part 32 and then advance it.

Embodiments are directed at a systems, methods, and apparatuses for automatically aligning the lead edges of a document stack loaded in a scanner system. An automated jogger system includes feeder gate elements which are driven forward and backwards in an oscillating motion. This motion causes the documents in the stack to slide between each other, causing the documents to move and rotate towards the feeder gate elements, aligning the lead edges of the stack prior to being fed into the document scanner.

A sheet conveyance apparatus includes: a support member having a support surface configured to support sheets, a feed unit configured to feed the sheets stacked on the support surface in a feed direction, a guide member provided on the downstream side of the support member in the feed direction, and a separating member projecting from an inclined surface of the guide member toward the support surface. The inclined surface is curved such that a separating area where the separating member is provided comes closest to the side of the support surface. The support surface has a first support surface located on the immediate upstream side in the feed direction to correspond to the separating area, and second support surfaces arranged respectively on both sides of the first support surface in a direction orthogonal to the feed direction to be lowered than the first support surface.

A sheet conveyance apparatus includes: a support member having a support surface configured to support sheets, a feed unit configured to feed the sheets stacked on the support surface in a feed direction, a guide member provided on the downstream side of the support member in the feed direction, and a separating member projecting from an inclined surface of the guide member toward the support surface. The inclined surface is curved such that a separating area where the separating member is provided comes closest to the side of the support surface. The support surface has a first support surface located on the immediate upstream side in the feed direction to correspond to the separating area, and second support surfaces arranged respectively on both sides of the first support surface in a direction orthogonal to the feed direction to be lowered than the first support surface.

An object of the invention is to provide a sheet materials separation-aiding apparatus capable of creating a gap between a specific sheet material and a sheet material coming into contact with the lower surface thereof even when the location precision of a stack of laminated sheet materials is low in the height direction of the stack of laminated sheet materials and in the direction orthogonal to the height direction.

An object of the invention is to provide a sheet materials separation-aiding apparatus capable of creating a gap between a specific sheet material and a sheet material coming into contact with the lower surface thereof even when the location precision of a stack of laminated sheet materials is low in the height direction of the stack of laminated sheet materials and in the direction orthogonal to the height direction.

A sheet feeder including a tray, a feeder roller, a guide, a separator, a motor, a controller, and a sensor, is provided. The sheet feeder separates an object sheet from other sheets in the tray and feed the object sheet through the guide and the separator by rotation of the feeder roller. The controller determines a remaining volume of the sheets in the tray based on a signal from the sensor; generate a velocity profile so that the object sheet is fed at a lower velocity in an earlier first period than a velocity in a later second period; based on the determined remaining volume of the plurality of sheets, modify at least one of a length of the first period and the target velocity in the first period of the velocity profile; and after modification of the velocity profile, control the motor in compliance with the modified velocity profile.

A sheet feeder including a tray, a feeder roller, a guide, a separator, a motor, a controller, and a sensor, is provided. The sheet feeder separates an object sheet from other sheets in the tray and feed the object sheet through the guide and the separator by rotation of the feeder roller. The controller determines a remaining volume of the sheets in the tray based on a signal from the sensor; generate a velocity profile so that the object sheet is fed at a lower velocity in an earlier first period than a velocity in a later second period; based on the determined remaining volume of the plurality of sheets, modify at least one of a length of the first period and the target velocity in the first period of the velocity profile; and after modification of the velocity profile, control the motor in compliance with the modified velocity profile.