A sheet feeding device includes a sheet stacking unit to stack a plurality of sheets, a feeding unit to feed sheets stacked on the sheet stacking unit, a separation unit, and a moving unit provided with at least a first moving member and a second moving member. The separation unit contacts the sheets fed by the feeding unit and separates a sheet from the sheets. The moving unit contacts the first and the second moving members to move a sheet contacting the first and the second moving members to an upstream side in a feeding direction. A leading edge of the sheet is positioned between the separation unit and the feeding unit. When pressed by the sheet, the first and the second moving members are configured to thrust-move independently of each other.

Separation strips in a dam aid in the separation of adjacent sheets of media being fed from a stack of sheets so that only one sheet is fed to a process station and, more particularly, to separating the uppermost or top sheet of a stack of sheets from the next adjacent sheet during feeding of the top sheet from the stack of sheets of media. When a lift plate is present that adjusts the height of the media stack, rotation of the separation strips to maintain a constant separation angle improves media feed reliability. Curvature of the separation strips may also maintain the separation angle as the lift plate raises the position of the top media sheet.

Separation strips in a dam aid in the separation of adjacent sheets of media being fed from a stack of sheets so that only one sheet is fed to a process station and, more particularly, to separating the uppermost or top sheet of a stack of sheets from the next adjacent sheet during feeding of the top sheet from the stack of sheets of media. When a lift plate is present that adjusts the height of the media stack, rotation of the separation strips to maintain a constant separation angle improves media feed reliability. Curvature of the separation strips may also maintain the separation angle as the lift plate raises the position of the top media sheet.

A medium processing device includes a medium storage portion configured to stack sheet-shaped media to store the sheet-shaped media, a first pressurizing member configured to pressurize the sheet-shaped media stored in the medium storage portion, and a second pressurizing member configured to pressurize the sheet-shaped media in cooperation with the first pressurizing member when a stacking thickness of the sheet-shaped media stored in the medium storage portion is equal to or greater than a predetermined thickness.

A medium processing device includes a medium storage portion configured to stack sheet-shaped media to store the sheet-shaped media, a first pressurizing member configured to pressurize the sheet-shaped media stored in the medium storage portion, and a second pressurizing member configured to pressurize the sheet-shaped media in cooperation with the first pressurizing member when a stacking thickness of the sheet-shaped media stored in the medium storage portion is equal to or greater than a predetermined thickness.

A tiltenator of a media separator module (integrated within a valuable media depository) adaptively controls pressure maintained against a bunch of media as individual items from the bunch are fed through the media separator module.

A tiltenator of a media separator module (integrated within a valuable media depository) adaptively controls pressure maintained against a bunch of media as individual items from the bunch are fed through the media separator module.

A sheet feeding device includes a sheet feeding cassette, which is detachable with respect to a sheet feeding cassette mounting portion provided on an image forming device body. The sheet feeding cassette includes a storage portion that stores a paper sheet, a first regulator provided on a bottom portion of the storage portion that regulates the position of a paper sheet, and a movable placement plate that upwardly pushes a paper sheet stored in the storage portion. The movable placement plate includes a second regulator that regulates the position of a paper sheet having a different size to the size of a paper sheet that can be regulated by the first regulator.

A sheet feeding device includes a sheet feeding cassette, which is detachable with respect to a sheet feeding cassette mounting portion provided on an image forming device body. The sheet feeding cassette includes a storage portion that stores a paper sheet, a first regulator provided on a bottom portion of the storage portion that regulates the position of a paper sheet, and a movable placement plate that upwardly pushes a paper sheet stored in the storage portion. The movable placement plate includes a second regulator that regulates the position of a paper sheet having a different size to the size of a paper sheet that can be regulated by the first regulator.

An image forming apparatus comprises a tray, a conveyor, a detector and a movement mechanism. The tray accommodates at least one document. The conveyor conveys the document placed on the tray. The detector detects that the document is placed on the tray. The movement mechanism moves the tray from a first position to a second position closer to the conveyor than the first position based on the detection that the document is placed on the tray, and after moving the tray from the first position to the second position, moves the tray to the first position based on a setting of a mixed stacking mode in which mixing of the documents with different sizes on the tray is permitted.