An example method for picking a media sheet from a media tray, the method comprising: controlling a media picker to perform a pick procedure to pick the media sheet from the media tray; upon detecting an error condition in the pick procedure, translating the media sheet in a direction within a plane of the media sheet; and controlling the media picker to retry the pick procedure to pick the media sheet from the media tray.

A feeder of a sheet treating or a sheet processing machine comprises a sensor system, which sensor system, on a front side pointing in a direction of transport of the sheets to be fed or on the opposing, rear side of the pile of sheets to be fed, comprises one or more sensors, by the use of which sensors, a distance, with respect to at least two locations, which are spaced apart from one another transversely to the transport direction, at the relevant front or rear sides of the pile, can be ascertained. A method is provided for detecting or correcting sheets having deviated positions or dimensions in such a sheet feeder of a sheet treating or processing machine.

A sheet feeding apparatus includes a sheet supporting portion to support a sheet, a feeding member to contact an upper surface of the sheet supported on the sheet supporting portion and feed the sheet, and a drive motor to rotate in a first direction and in a second direction opposite to the first direction. In addition, a lifting mechanism is connected to the drive motor to lift the sheet supporting portion and lower the feeding member in a case where the drive motor rotates in the first direction, and to lower the sheet supporting portion and lift the feeding member in a case where the drive motor rotates in the second direction.

A sheet transport device includes a processor configured to change lifting control for lifting sheets on a tray, which are to be floated up and handed over, from normal state control to small-quantity state control in a case where it is detected that the remaining number of sheets on the tray is small.

A sheet feeding device includes a sheet stacking unit, a long sheet stacking unit, a first guide, a first detector, and a closing unit. The sheet stacking unit is movable up and down. Sheets are stacked on the sheet stacking unit. The long sheet stacking unit is detachably mounted on the sheet stacking unit. Long sheets are stacked on the long sheet stacking unit. The first guide is movable along a feeding direction through a groove. The first guide is deformable into a shape that does not interfere with the long sheet stacking unit. The first guide guides a rear end portion of the sheets in the feeding direction. The first detector is provided in the first guide. The first detector detects the sheets stacked on the sheet stacking unit. The closing unit is detachably attached to the groove in the sheet stacking unit. The closing unit closes the groove.

A sheet feeding device includes a sheet stacking unit, a long sheet stacking unit, a first guide, a first detector, and a closing unit. The sheet stacking unit is movable up and down. Sheets are stacked on the sheet stacking unit. The long sheet stacking unit is detachably mounted on the sheet stacking unit. Long sheets are stacked on the long sheet stacking unit. The first guide is movable along a feeding direction through a groove. The first guide is deformable into a shape that does not interfere with the long sheet stacking unit. The first guide guides a rear end portion of the sheets in the feeding direction. The first detector is provided in the first guide. The first detector detects the sheets stacked on the sheet stacking unit. The closing unit is detachably attached to the groove in the sheet stacking unit. The closing unit closes the groove.

A paper sheet processing device includes: an accommodating part that accommodates a paper sheet; and a sliding stage part that is provided within the accommodating part and supports the paper sheet accommodated within the accommodating part, the sliding stage part sliding with respect to the accommodating part to cause a portion of the sliding stage part to protrude to outside of the accommodating part, and the sliding stage part sliding with respect to the accommodating part to push the paper sheet to the outside of the accommodating part and cause a leading end of the paper sheet to protrude to the outside of the accommodating part.

A paper sheet processing device includes: an accommodating part that accommodates a paper sheet; and a sliding stage part that is provided within the accommodating part and supports the paper sheet accommodated within the accommodating part, the sliding stage part sliding with respect to the accommodating part to cause a portion of the sliding stage part to protrude to outside of the accommodating part, and the sliding stage part sliding with respect to the accommodating part to push the paper sheet to the outside of the accommodating part and cause a leading end of the paper sheet to protrude to the outside of the accommodating part.

A sheet conveying device includes a sheet tray on which one or more sheets are placed, a pickup roller by which a sheet is picked up from the sheet tray, and an elevating mechanism. The elevating mechanism includes a shaft rotated by a motor, and a cam attached to the shaft and rotated together with the shaft to raise and lower the sheet tray with respect to the pickup roller. The sheet conveying device further includes a load applying mechanism contacting the shaft to apply a load thereto.

A sheet conveying device includes a sheet tray on which one or more sheets are placed, a pickup roller by which a sheet is picked up from the sheet tray, and an elevating mechanism. The elevating mechanism includes a shaft rotated by a motor, and a cam attached to the shaft and rotated together with the shaft to raise and lower the sheet tray with respect to the pickup roller. The sheet conveying device further includes a load applying mechanism contacting the shaft to apply a load thereto.