SHEET FEEDING DEVICE AND IMAGE FORMING APPARATUS

摘要

An apparatus includes a movable regulation member that regulates a trailing edge side position of a sheet stack stored in a storage portion in a sheet feeding direction, a trailing edge detection portion, movable together with the regulation member, that detects a sheet surface on the trailing edge side of the sheet stack, and a control unit that detects whether the regulation member is positioned to an end surface on the trailing edge side of the sheet stack based on a detection result by the trailing edge detection portion, and that causes a display unit to provide a warning if the regulation member is not positioned to the end surface, wherein, if a predetermined sheet with thicknesses different between leading edge and trailing edge sides thereof in the sheet feeding direction is set by a setting unit, the control unit does not cause the display unit to provide the warning.

主权项

1. An image forming apparatus comprising:
a storage portion configured to store a sheet stack including a plurality of sheets; a setting unit configured to set a type of sheets that are stored in the storage portion; a lifting and lowering portion configured to move up and down the sheet stack stored in the storage portion; a feeding portion configured to feed a sheet from the sheet stack stored in the storage portion; a regulation member being movable and configured to regulate a position on a trailing edge side of the sheet stack stored in the storage portion in a feeding direction in which the feeding portion feeds a sheet; a display unit configured to display information; a trailing edge detection portion being movable together with the regulation member and configured to detect a sheet surface on the trailing edge side of the sheet stack; and a control unit configured to perform a detection operation for detecting whether the regulation member is positioned to an end surface on the trailing edge side of the sheet stack based on a result of detection by the trailing edge detection portion, and configured to cause the display unit to provide a warning display if it is detected that the regulation member is not positioned to the end surface, wherein, in a case where a predetermined sheet having thicknesses different between a leading edge side and a trailing edge side of the predetermined sheet in the feeding direction is set by the setting unit, the control unit does not cause the display unit to provide the warning display.