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.

A sheet supply device in an embodiment includes a cassette, a housing, a drawing-in device, a roller, and a guide member. The housing supports the cassette to be movable in a first direction. The drawing-in device draws the cassette into the housing. The roller is supported by one of the cassette and the housing. The guide member is supported by another of the cassette and the housing. The guide member includes a groove having the first direction as a longitudinal direction and having a third direction orthogonal to the first direction and the second direction as a width direction. The roller is disposed in a first portion in the first direction of the groove in a state in which the cassette is housed in the housing.

In a paper feeding device, a paper feeding cassette and a multi-tray are disposed to be freely inserted or extracted separately, a hook is disposed in the paper feeding cassette, and an engagement part is disposed in the multi-tray. In a state in which the paper feeding cassette and the multi-tray are pushed into and housed on the inside of a device main body, when a lever is operated, and the hook is moved in an upward direction against a biasing force of a coil spring, the hook is engaged with the engagement part, and, in this state, when the paper feeding cassette is drawn out, the hook moves the engagement part, and the multi-tray is drawn out together with the paper feeding cassette.

A storage to store a sheet to be conveyed by a conveyance unit includes a regulating member to regulate a sheet edge in the storage and a switching device to switch a regulating member state to a first state where a regulating member position is changeable and to a second state where the position is fixed. The storage is to be held by a main body of a sheet stacking apparatus and is moveable to a closed and to a pullout position. The regulating member state is switched to the first or second state by an operator operating the switching device when the storage is in the pullout position. When the storage is pushed from the pullout position into the closed position while the regulating member state is the first state, the regulating member state is switched from the first state to the second state by the main body.

An adjustable tray includes a first board, a second board and an adjustment component. The second board is pivoted on the first board, and the second board has at least one first position section and at least one second position section. The adjustment component includes a main part and at least one abutted part connected to each other. A first distance is between the first position section and the first board. A second distance is between the second position section and the first board. The first distance is different from the second distance. The main part is movably disposed on the first board for positioning the abutted part at the first position section or the second position section to pivot the second board with a first angle or a second angle between the first board and the second board, and the first angle is different from the second angle.

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 storage device has a rotation restriction portion configured to restrict a rotation of an end cursor from a first posture to a second posture. The rotation restriction portion has: a restriction piece situated on the end cursor and configured to be brought into contact with a guide rail so as to restrict the rotation of the end cursor from the first posture to the second posture; and an engagement recess formed at a given position of the guide rail, the restriction piece being fitted in the engagement recess. The end cursor is allowed to rotate from the first posture to the second posture when the restriction piece is fitted in the engagement recess at the given position of the guide rail.

A sheet supporting apparatus includes a body, a supporting portion configured to be held in an elevating manner by the body and to support a sheet, a sheet regulation portion regulating a position of the sheet supported on the supporting portion, a movement portion capable of moving between a first position where the sheet regulation portion regulates the position of the sheet supported on the supporting portion, and a second position where the supporting portion is regulated from elevating with respect to the body, and a movement regulation unit regulating the movement portion from moving to the second position.

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.

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.