A sheet supporting apparatus includes first and second units. The first unit includes a first housing, first and second lock portions, a first shaft configured to be supported rotatably with respect to the first housing and to turnably support the first lock portion, and a second shaft configured to be supported rotatably with respect to the first housing and to turnably support the second lock portion. The second unit includes a second housing and first and second engagement portions provided in the second housing and configured to engage respectively with the first and second lock portions. The first and second shafts are disposed such that extension lines of rotational axes of the first and second shafts cross with each other in a plan view.

An image forming apparatus, including: an apparatus main body; an openable and closable member provided on the apparatus main body; an image reading portion configured to read an image of an original, the image reading portion being supported on the apparatus main body and being movable to a first position and to a second position; and a stopper member configured to move in conjunction with a movement of the image reading portion, wherein when the image reading portion is moved to the first position, the stopper member is moved to a restricting position for restricting the openable and closable member from moving from a closed position to an open position, and wherein when the image reading portion is moved to the second position, the stopper member is moved to an allowing position for allowing the openable and closable member to move from the closed position to the open position.

A medium discharging device includes a discharging unit which discharges a medium; and a medium receiving tray which receives the medium discharged by the discharging unit, and is switched between an extended state and an accommodated state, in which the medium receiving tray is provided with a base tray, a main extendeding unit that is accommodated or extended, and at least one sub-extendeding unit that is accommodated or extended, and in which the base tray forms an accommodating space for accommodating at least the one sub-extendeding unit, and is provided with a first protrusion portion protruding toward the accommodating space.

An according to an aspect, a paper feed device includes a device body and a paper feed cassette inserted into the device body along an insertion direction. The paper feed device includes a lock lever mounted to the paper feed cassette via a lever shaft; a spring that applies a rotational force which rotates the lock lever in an engagement direction; and a lock member provided at the device body.

A sheet storage cassette includes a cassette body, a cassette cover, and a lock mechanism. The lock mechanism includes a lock member swingably provided on a back-surface side of the cassette cover and engageable with a locking pin provided in the cassette insertion portion, and a biasing member biasing the lock member in a direction toward engagement with the locking pin. Along with an operation of inserting the cassette body into the cassette insertion portion, the lock member engages with the locking pin. In a state where the cassette body is inserted in the cassette insertion portion, by inserting a thin-plate shaped release member into a gap between the cassette cover and an exterior member arranged under and adjacent to the cassette cover, the lock member is caused to swing to release the engagement with the locking pin.

A secure printer with a secure tray. Valuable paper can be put in the secure tray, such as prescription paper, stock certificates, etc. The secure printer can lock the secure tray so that the secure tray cannot be removed from the secure printer or printed to. A wireless fob can be used to unlock the secure printer and thus enable removal of the secure tray from the secure printer and/or enable printing to the secure tray. A latch can be retracted and extended into a notch in the secure tray. When the latch is extended it would lock the secure tray from removal. A processor can control when to retract and extend the latch. A standard printer can also be converted to a secure printer by installing some components including a latch assembly, a processor board, and a detectable object on a side of the secure tray.

A sheet stacking device including: a stacking unit; and a regulation member movably supported by the stacking unit and contacting a sheet edge to regulate a sheet position. The regulation member includes: a locking member movable between an engagement position and a disengagement position; a biasing member biasing the locking member toward the engagement position; a force receiver receiving a user operation; a releaser converting a first force in a first direction applied to the force receiver into a second force in a second direction opposing a biasing force from the biasing member, moving the locking member from the engagement position to the disengagement position; and a stopper that, after the locking member disengages from the engaging portion and a user operation is not applied to the force receiver, prevents a movement of the locking member back to the engagement position due to the biasing force from the biasing member.

An image forming apparatus including: a sheet feeding tray configured to support a sheet; and an apparatus main body configured to support the sheet feeding tray so as to be moveable in a direction parallel with a sheet feeding direction, the apparatus main body including a chute configured to guide the sheet that is fed from the sheet feeding tray, wherein the sheet feeding tray includes a guiding member configured to be displaced between an engaging position at which the guiding member engages with the chute and restrains movement of the sheet feeding tray and a separation position at which the guiding member separates from the chute and permits movement of the sheet feeding tray, and wherein the guiding member is configured to guide the sheet that is fed from the sheet feeding tray toward the chute when the guiding member is located at the engaging position.

An image forming apparatus includes a first casing, a pivotable second casing, a pivotable document cover, and a lock mechanism including a movable hook and a fixed hook. The second casing has a document support surface. When the second casing is at a first position in which the second casing covers an upper surface of the first casing, and the document cover is at a fourth position in which the document cover reveals the document support surface, the movable hook is engaged with the fixed hook. When the second casing is at the first position, and the document cover is at a third position in which the document cover covers the document support surface, the movable hook is disengaged from the fixed hook.

A sheet feeding apparatus is provided with a pick-up roller that contacts sheets loaded on a load tray to pick up, a paper feed roller that feeds a picked-up sheet, and a separation roller brought into press-contact with the paper feed roller to separate the sheet, where the sheets are separated from the pick-up roller, the separation roller is rotated in a sheet return direction different from a sheet feed direction, and subsequently, the paper feed roller is separated from the separation roller. It is possible to prevent damage to a sheet and sheet jam from occurring in pulling out the load tray loaded with sheets to the front side.