A sheet feeder includes an apparatus main body, a sheet housing unit, and a sheet feeding unit. The sheet housing unit includes a housing space, a lift plate, an elevating mechanism, and a side fence. The elevating mechanism includes a pair of first wires, a pair of second wires, first pulleys, second pulleys, a reel, and a pair of first connecting members. The reel winds up the pair of first wires and the pair of second wires. The pair of first connecting members are connected to be relatively movable with respect to the lift plate in a vertical direction, causes a relative position to vary with respect to the lift plate in a vertical direction in accordance with a weight of the plurality of sheets loaded on the lift plate, and causes the lift plate to move upward when the weight is lighter than a predetermined value.

A sheet feeder device that stores and sends out a transfer medium includes: a sheet feeder device main unit having an opening formed at an upper portion and including an upstream partial lid located on an upstream side and a downstream partial lid located on a downstream side, the upstream partial lid and the downstream partial lid covering at least part of the opening; a sheet feed tray provided in the sheet feeder device main unit, the transfer medium being loaded onto the sheet feed tray; an elevating unit configured to lift up and down the sheet feed tray; and a control unit configured to control the lifting up and down of the sheet feed tray, wherein the control unit senses opening and closing of the upstream partial lid and the downstream partial lid, and controls the lifting up and down being performed by the elevating unit.

A paper sheet processing device that can smoothly send paper sheets into a machine body. A paper sheet or banknote processing device presses banknotes placed in an intake section towards a feed roller by a bill press and takes in the banknotes into a machine body, wherein the bill press comprises a main pressing section that is provided to be movable up and down in the intake section and can press the substantial center of the banknotes, and a first auxiliary pressing section and a second auxiliary pressing section that are provided independently of the main pressing section and can press regions of the banknotes other than the substantial center.

In a sheet discharge device, upon a discharge of a sheet bundle onto a discharge tray, a lowering control portion lowers the discharge tray by a predetermined lowering distance. After the discharge tray is lowered by the lowering control portion, a lifting control portion waits until a front end of an initial sheet of a next sheet bundle becomes in a state of protruding from a discharge port, and then lifts the discharge tray until an upper-surface detection sensor detects that an upper surface of sheet bundles stacked on the discharge tray has reached a predetermined height.

A removable raised tray system for a printing system generally includes a removable tray operatively arranged to receive print media thereon. The removable tray includes an upper tray surface having an electrically conductive material, a lower tray surface, and at least one tray leg that is connected to the removable tray, which is configured to support the removable tray at a position that is raised relative to a platform surface of a printer feeder or stacker. The at least one leg includes a releasable fastening assembly, such as a rare earth magnet, that releasably secures the removable tray to the platform surface thereby allowing the tray to easily attached and removed from the printer feeder or stacker. The electrically conductive material of the tray surface and the platform surface are electrically conductively connected to one another so as to prevent the build-up of static electricity.

A printing apparatus that enables a medium container to be detached by moving a hopper with a reduced load with a simple structure is provided.

In a sheet discharge device, upon a discharge of a sheet bundle onto a discharge tray, a lowering control portion lowers the discharge tray by a predetermined lowering distance. After the discharge tray is lowered by the lowering control portion, a lifting control portion waits until a front end of an initial sheet of a next sheet bundle becomes in a state of protruding from a discharge port, and then lifts the discharge tray until an upper-surface detection sensor detects that an upper surface of sheet bundles stacked on the discharge tray has reached a predetermined height.

A multi-stage sheet ejection device including a tray and a level adjusting structure is provided. The level adjusting structure includes a body and a sliding element. The body has a plurality of stages arranged on a vertical surface of the body in order. The sliding element is disposed on the body and horizontally movable with respect to the vertical surface of the body. Through the movement of the sliding element, the tray can be controlled to move on the vertical surface stage by stage and be supported on one of the stages in sequence.

A sheet loading device is provided with a sheet ejection portion, a sheet loading portion, a first detection mechanism, a driving device, a second detection mechanism, and a control portion. The driving device drives the sheet loading portion to ascend/descend between an upper surface detection position and a reference position made to descend by a prescribed distance from the upper surface detection position. The second detection mechanism detects that the sheet loading portion is at the reference position. In a case where sheets of the same type are ejected continuously from the sheet ejection portion, the control portion controls beforehand the sheet loading portion to ascend from the reference position to the upper surface detection position and sets a loadable number of sheets of the sheet loading portion in accordance with an ascending time of the sheet loading portion.

A sheet feeder includes an apparatus main body, a sheet housing unit, and a sheet feeding unit. The sheet housing unit includes a housing space, a lift plate, an elevating mechanism, and a side fence. The elevating mechanism includes a pair of first wires, a pair of second wires, first pulleys, second pulleys, a reel, and a pair of first connecting members. The reel winds up the pair of first wires and the pair of second wires. The pair of first connecting members are connected to be relatively movable with respect to the lift plate in a vertical direction, causes a relative position to vary with respect to the lift plate in a vertical direction in accordance with a weight of the plurality of sheets loaded on the lift plate, and causes the lift plate to move upward when the weight is lighter than a predetermined value.