A recording apparatus includes a medium storage cassette which includes a medium storage region and is capable of being inserted and removed with respect to an apparatus main body, in which the medium storage cassette includes a main cassette unit and a sub-cassette unit which is capable of switching between a first state and a second state which is displaced more in the removal direction than in the first state to expand the medium storage region, and in which the apparatus main body includes a cover which is provided to be capable of being displaced between a position corresponding to the first state of the sub-cassette unit and a position corresponding to the second state and which covers a top portion of the medium storage region on the removal direction side.

A medium stacking device includes an intermediate stacker that receives a medium treated by a treatment portion, and a first alignment member as an example of a contact portion, that is configured to move between a first position for performing an alignment operation on the medium on the intermediate stacker, and a second position that is separated further from the leading edge of the medium than is the first position. Furthermore, the medium stacking device is provided with a stacking portion that stacks the medium discharged from the intermediate stacker. The medium discharged from the intermediate stacker is stacked on the stacking portion after a leading edge contacts the first alignment member positioned at the second position.

A sheet storing cassette includes a cassette base, a sheet stacking plate, a cursor rail, a regulation cursor, and an adjustment member. The regulation cursor has a first regulating portion which forms a first sheet regulating face for positioning the sheets placed on the sheet stacking plate in the sheet feeding direction. The cursor rail has a plurality of engaged portions with which an engaging portion provided on the regulation cursor meshes when the regulation cursor is moved such that the first sheet regulating face is arranged at standard-size positions corresponding to a standard-size sheet. The adjustment member has a second regulating portion that offsets, when the adjustment member is attached to the regulation cursor arranged at one of standard-size positions, the first sheet regulating face to a second sheet regulating face corresponding to a non-standard size sheet.

A sheet feeding device includes a sheet loader, a sheet feeder, and an end fence. The sheet loader is configured to load a sheet bundle including sheets. The sheet feeder is configured to feed an uppermost sheet of the sheet bundle loaded on the sheet loader. The end fence is disposed movable in a sheet feeding direction of the uppermost sheet and is configured to contact a trailing end of the sheet bundle in the sheet feeding direction to regulate a position of the trailing end of the sheet bundle. The end fence includes an elastic body configured to contact the trailing end of the sheet bundle at a portion other than at least an upper portion of the end fence.

An image formation apparatus according to an embodiment may include: a print unit that forms an image on a medium; and a medium conveyance unit that conveys the medium to the print unit. The medium conveyance unit may include: a medium guide that is movable in a width direction of the medium perpendicular to a conveyance direction of the medium, to guide a width end of the medium; a guide position detector that detects a position of the medium guide in the width direction of the medium; and a medium end detector that is provided at the medium guide and detects whether there is the medium with the width end guided by the medium guide. The print unit may include a determination unit that determines a set state of the medium based on a detection result by the medium end detector.

A medium containing device includes a supporting member composed with a first part, a second part and a third part connecting the first part and the second part wherein the supporting member is configured to cause the first part to incline by being lifted up from a standard position, and supports recording media. When the supporting member is in the standard position, a first height position of an upper face of a first base part in a region adjacent to the first part is lower than a second height position of an upper face of the first part in a region adjacent to the first base part, and a third height position of an upper face of the second part in a region adjacent to the first base part is lower than a fourth height position of an upper face of the first base part in a region adjacent to the second part.

A measurement apparatus includes a first conveyance path, a second conveyance path, a measuring portion, a third conveyance path and a sheet stacking portion. A sheet discharged out of an image forming apparatus is conveyed toward a downstream apparatus through the first conveyance path. The second conveyance path is branched from the first conveyance path, extended below the first conveyance path, and merged with the first conveyance path. The measuring portion is disposed on the second conveyance path. The third conveyance path is provided above the first conveyance path and is configured to convey the sheet from which a test image has been measured by the measuring portion in the second conveyance path. The sheet stacking portion is provided above the first conveyance path, and the sheet discharged out of the third conveyance path is stacked on the sheet stacking portion.

A medium supply apparatus includes a box member and a lid. A medium is stored inside the box member. The box member is inserted into and extracted from a body of an image forming apparatus, and has a length in an extraction/insertion direction that is longer than a length of the body in the extraction/insertion direction. The lid is provided on a back side of the body in the extraction/insertion direction of the box member to cover at least an upper part of a portion of the box member that projects from the body. The lid includes a first member, a second member, and a first lug. The first member is movable in the extraction/insertion direction with respect to the body. The second member is connected to the first member so as to be relatively movable in the extraction/insertion direction with respect to the first member. The second member is moved by being pushed by the box member which is inserted into the body. The first lug is provided on the second member. The first lug is engaged with the box member by a force that presses the box member against the second member, and disengaged from the box member by a force that extracts the box member from the second member.

A stacking apparatus includes a limiting member which moves along a feeding direction and limits a trailing edge of a stacked sheet in the feeding direction, and a partition member which partitions a space at a height which is lower than a predetermined height, into a first space corresponding to a first stacking unit and a second space corresponding to a second stacking unit in a feeding direction. The partition member includes a first opening portion for communicating the first space and the second space with each other, and a second opening portion that allows the limiting member to move.

A sheet aligning device includes a support member, a regulation member, a regulation member moving mechanism, and an alignment member. The support member supports leading ends of sheets. The regulation member is connected to the support member and is provided to face an inclined tray in such a way as to define a sheet entry space in which the leading ends of the sheets enter. The regulation member moving mechanism is configured to, each time a sheet is conveyed onto the inclined tray, move the regulation member in a separating direction to widen the sheet entry space, and then in an approaching direction to narrow the sheet entry space. The alignment member aligns the sheets by abutting on rear ends of the sheets.