According to an example, an apparatus may include an automatic document feeder, printing components, an externally accessible embedded finishing mechanism, an illumination source to direct attention to the embedded finishing mechanism, and a controller. The controller may determine whether a certain condition has been met pertaining to media sheets fed into the automatic document feeder or printed by the printing components, and in response to a determination that the certain condition has been met, may activate the illumination source.

A sheet feeding device includes a sheet supporting unit, a sheet feeding unit, and a regulating member. The regulating member includes a supporting surface portion on which the sheet is placed, and a regulation surface portion provided continuously with the supporting surface portion and configured to regulate the position of the sheet in a width direction. The supporting surface portion includes a supporting surface color indicating portion including an end portion of the supporting surface portion on a side of the regulation surface portion and having a color with brightness of 7 or less in the Munsell color system. The regulation surface portion includes a regulation surface color indicating portion including an end portion of the regulation surface portion on a side of the supporting surface portion and having a color with brightness higher than the brightness of the supporting surface color indicating portion.

A quality control station (2) for a sheet element processing machine, the station having at least one camera (6) arranged for capturing images of sheet elements (4) transported through the quality control station (2), and further having a camera calibration system (10). The camera calibration system (10) having a target holder (12) for holding an optical target (14), and a drive (15) for the target holder (12). The drive (15) is adapted for displacing the target holder (12) between a rest position, in which it is outside of the viewing area (7) of the camera (6), and a calibration position in which it is arranged in the viewing area (7) of the camera (6).

A sheet supporting apparatus includes a sheet supporting portion supported liftably between a standby position and a lifted position, a lifting portion arranged below the sheet supporting portion, and configured to lift the sheet supporting portion toward the lifted position by pressing the sheet supporting portion from below. The sheet supporting portion includes a supporting surface defining a non-interference region in which a width regulating portion can move in a width direction. A projected portion is provided on the lifting portion, and configured to project upward toward a non-interference region.

An image forming apparatus includes an image forming station for forming an image on the basis of image information; a top plate portion provided in an upper portion and including a stacking surface having a length in a predetermined direction longer than a length of a short side of a maximum size sheet on which the image forming station is capable of forming the image and shorter than a length of a long side of the maximum size sheet; a wall portion projected upwardly at a position of one end portion with respect to the predetermined direction of the top plate portion and provided with a wall surface inclined so as to form an obtuse angle between itself and the stacking surface of the top plate portion; and a connecting portion having a curved surface configured to connect the stacking surface and the wall surface with each other.

An image forming apparatus forming an image on a sheet, including: an exterior member movable with respect to an apparatus main body; a locking portion locking the exterior member to the apparatus main body such that the exterior member is not moved with respect to the apparatus main body; a display portion which is disposed on the exterior member and displays a state of the locking portion; and a light source turning on the display portion, in which the display portion includes a thin portion which is a part of the exterior member, has a thickness less than thicknesses of other portions of the exterior member, and transmits light from the light source.

It is one object of the present invention to provide a thermal history estimation apparatus, a thermal history estimation method and a thermal history estimation program that can estimate variation in thermal history within a plane of a sheet heated by a heating apparatus. The thermal history estimation apparatus includes a first acquisition unit that acquires color information on a sheet plane heated by the heating apparatus, and a first estimation unit that estimates information on variation in thermal history on the sheet plane based on the acquired color information.

A sheet tray includes: a first receiving member; a second receiving member including a first holding portion configured to be pushed into and drawn out from the first receiving member and a third receiving member including a second holding portion configured to be pushed into and drawn out from the second receiving member. The first receiving member covers the second and third receiving members in a state of being pushed into. The second receiving member is configured to expose the second holding portion while maintaining a state in which the third receiving member can be drawn out. The first receiving member is configured to expose the second holding portion while maintaining a state in which the third receiving member can be drawn out.

A sheet supporting apparatus includes a sheet supporting portion supported liftably between a standby position and a lifted position, a lifting portion arranged below the sheet supporting portion, and configured to lift the sheet supporting portion toward the lifted position by pressing the sheet supporting portion from below. The sheet supporting portion includes a supporting surface defining a non-interference region in which a width regulating portion can move in a width direction. A projected portion is provided on the lifting portion, and configured to project upward toward a non-interference region.

A sheet feed cassette is a sheet feed cassette in which a sheet is stored, the sheet feed cassette being mountable to and detachable from an image forming apparatus, the sheet feed cassette including a mounting portion and a cover. The mounting portion is formed so as to be recessed in a front surface of the sheet feed cassette. One or a plurality of information display members on which information concerning the sheet is described can be inserted to and pulled out from the mounting portion. The cover is capable of opening/closing relative to the mounting portion and has a surface flush with the front surface of the sheet feed cassette in a state where the cover is closed.