A sheet stacking apparatus includes a sheet stacking unit on which sheets are stacked, a sheet regulating unit, and a cover member. The sheet regulating unit includes a main body having a regulating surface regulating a position of the sheet on the sheet stacking unit, and an operating portion movably supported on the main body and having an operating surface. The operating portion is movable from a first to a second position by operating the operating surface. The sheet regulating unit is locked to the sheet stacking unit when the operating portion is in the first position, and unlocked when in the second position. The cover member includes a first surface covering the operating surface and a second surface covering an upper surface of the operating portion, and covers the operating portion with at least the first surface and the second surface so that the operating portion is not visible.

A sheet accommodating apparatus includes a first cassette provided so as to be drawn out in a draw-out direction, a second cassette disposed adjacent to the first cassette in a vertical direction, one holder member, and a first light emitting member and a second light emitting member that are supported by the holder member. The first cassette includes a first accommodating container and a first cover. The second cassette includes a second accommodating container and a second cover. The first cover has a first hole provided in a position opposing the first light emitting member in the draw-out direction such that the light emitted from the first light emitting member passes therethrough. The second cover has a second hole provided in a position opposing the second light emitting member in the draw-out direction such that the light emitted from the second light emitting member passes therethrough.

An image forming apparatus includes: a photosensitive drum; a developing roller; a separation mechanism for moving the developing roller between a contacting position contacting the photosensitive drum and a separated position separated from the photosensitive drum; a first tray; a first sheet feed mechanism for feeding a sheet from the first tray toward the photosensitive drum; a first sheet sensor for detecting passage of the sheet at a prescribed position; and a controller. The controller of the image forming apparatus is configured to perform: when a printing operation is performed onto the sheet ted from the first tray, feeding the sheet in the first tray to the prescribed position and maintain the sheet; moving, on or after the first sheet sensor detects the sheet, the developing roller to the contacting position.

The sheet feeding cassette includes a cassette frame, a first lift plate and a second lift plate. The cassette frame includes a bottom plate and side plates extending in the feeding direction. The bottom plate and the side plates form a sheet placement space. The first lift plate is disposed on the bottom plate, configured to rotate up and down around a first axis extending along a width direction perpendicular to the feeding direction, and configured to lift a leading end portion in the feeding direction of the sheet. The second lift plate is configured to rotate up and down around a second axis extending along the feeding direction and to lift a side end portion along the feeding direction of the sheet.

A cassette drawing-in device includes a guide portion to guide a pin protruding from a paper feed cassette, a first member in which the guide portion is formed, a second member facing the first member, a first rotation shaft, a first link rotationally supported by the first rotation shaft, a second rotation shaft provided on the first link, a second link rotationally supported by the second rotation shaft and including an engagement groove which engages the pin and slides on the pin in a direction intersecting the moving direction of the pin, and a protruding portion on one or both of the first member and the second member within a range of movement of the second link that accompanies the rotation of the first link about the first rotation shaft.

An image forming apparatus includes an image forming section, sheet type list storage, an authentication section, a display controller, and a display section. The image forming section forms a data image on a sheet. The sheet type list storage stores user sheet type lists therein on a user-by-user basis. The user sheet type lists each include one or more sheet types extracted from among sheet types included in a sheet type list. The sheet types are sheet types that the image forming section is capable of coping with. An authentication section authenticates a user. The display controller generates a sheet type selection screen based on a user sheet type list corresponding to the user authenticated by the authentication section among the user sheet type lists stored in the sheet type list storage. The display section displays the sheet type selection screen generated by the display controller.

An image forming apparatus comprises an accommodating unit that accommodates recording materials and has a regulating plate that regulates a trailing edge of the recording material in a feeding direction, detects a recording material fed from the accommodating unit, and measures time from a predetermined timing until a recording material is detected. An information processing apparatus receives time data obtained by a measuring unit from the image forming apparatus, classifies a plurality of time data received from a reception unit into a first group and a second group in accordance with a length of time, and determines using time data included in the first group and the time data included in the second group whether a position of the regulating plate is misaligned in relation to a reference position that corresponds to a size of the recording material accommodated on the accommodating unit.

A reusable media shell has a frame to hold sheets of media in an interior. A removable cap connects to the frame and its manipulation unveils the media for picking by an imaging device. The cap resides on a terminal end of the frame so the frame covers a majority of the media. A lift plate in the interior forces upward the sheets for picking. Two magnets on the frame magnetically secure the frame to magnets in a base of the imaging device and position the sheets in the base. Upstanding walls, a lid and bottom define the interior of the frame. Inserts attached to the walls allow adjustment to accommodate various sizes of the media.

A sheet stacking apparatus includes a sheet stacking unit on which sheets are stacked, a sheet regulating unit, and a cover member. The sheet regulating unit includes a main body having a regulating surface regulating a position of the sheet on the sheet stacking unit, and an operating portion movably supported on the main body and having an operating surface. The operating portion is movable from a first to a second position by operating the operating surface. The sheet regulating unit is locked to the sheet stacking unit when the operating portion is in the first position, and unlocked when in the second position. The cover member includes a first surface covering the operating surface and a second surface covering an upper surface of the operating portion, and covers the operating portion with at least the first surface and the second surface so that the operating portion is not visible.

A cassette drawing-in device includes a guide portion to guide a pin protruding from a paper feed cassette, a first member in which the guide portion is formed, a second member facing the first member, a first rotation shaft, a first link rotationally supported by the first rotation shaft, a second rotation shaft provided on the first link, a second link rotationally supported by the second rotation shaft and including an engagement groove which engages the pin and slides on the pin in a direction intersecting the moving direction of the pin, and a rib on one or both of the first member and the second member. The rib slides on a side surface of the second link within a range of movement of the second link that accompanies the rotation of the first link about the first rotation shaft.