Various embodiments of a printer modification system for modifying a printer to accommodate different sized documents such as elections documents are disclosed herein.

An image forming apparatus includes a main body, a sheet cassette, and a controller. The main body includes a first electrode, a second electrode, and a capacitance detector configured to output a signal indicating a value corresponding to a quantity of electricity stored in the first electrode and the second electrode. The sheet cassette includes a sheet guide, and a conductor disposed in an upper portion of the sheet guide. In a state in which the sheet cassette is at an installation position defined in the main body, the first electrode and the second electrode face the conductor in an up-down direction and are at different positions in a moving direction in which the sheet guide is movable. The controller is configured to detect a position of the sheet guide from the value of the signal outputted from the capacitance detector.

A sheet handling apparatus configured to feed sheets from outside into the sheet handling apparatus, transport the fed sheets in a storage area which is outside of a storage bag in the sheet handling apparatus and store the transported sheets in the storage bag includes: a holder configured to be capable of detachably holding the storage bag; a pushing member configured to push a plurality of sheets transported in the storage area into the storage bag through the opening of the storage bag; and a pressing member configured to press the sheets stored in the storage bag held by the holder.

A sheet storage device includes a sheet positioning member that is movable in a first direction, and positions a sheet by abutting on a side end portion of the sheet at a side in the first direction. The sheet positioning member includes a moving body, an abutting portion, a first and a second biasing member, and a bias removing portion. The moving body is configured to move in the first direction. The abutting portion is supported by the moving body to be movable in the first direction and configured to abut on the side end portion when the sheet positioning member positions the sheet. The first biasing member biases the abutting portion toward the side end portion. The second biasing member biases the abutting portion against a biasing force of the first biasing member. The bias removing portion removes a bias applied by the second biasing member.

A printing apparatus includes, in a printing apparatus main body, a cover configured to open and close a housing portion configured to house a recording medium, and a first support shaft and a second support shaft configured to rotatably support the cover. The first support shaft is disposed in a position closer to the printing unit than to the housing portion, and the second support shaft is disposed in a position farther from the printing unit than from the housing portion. The cover is configured such that, when displaced from a closed position in a first direction, the cover is rotationally movable around the first support shaft up to a first open position, and that, when the cover is displaced from the closed position in a second direction, the cover is rotationally movable around the second support shaft up to a second open position.

An adjustable leveling assembly for engaging a stack of a plurality of sheets in a feeder tray of a printing device, including a first wedging element slidably arranged on the feeder tray and operatively arranged to engage the stack, wherein when the first wedging element is disengaged with the stack, a top sheet of the plurality of sheets is non-parallel to the feeder tray, and when the first wedging element is engaged with the stack, the top sheet is substantially parallel to the feeder tray.

In an image forming apparatus, a tray having first and second receiving portions is configured to move between a first position, at which at least part of the tray is positioned inside an apparatus body, and a second position, at which the tray is outside the apparatus body. The tray in the first position allows a first recording medium to be conveyed from the first receiving portion. When the tray is in the first position, the second receiving portion is configured to move between a third position, which is at an upstream side relative to a first opening of the apparatus body in a second direction, and a fourth position, which is at a downstream side relative to the third position in the second direction. The second receiving portion at the third position allows a second recording medium to be conveyed from the second receiving portion in the second direction.

A sheet feeding apparatus includes a detection unit provided to be movable with respect to a sheet stacking portion and configured to detect a sheet by causing a contact portion to come into contact with an uppermost sheet stacked on a stacking surface, wherein a bottom portion of the sheet stacking portion forms a part of a bottom portion of the sheet feeding apparatus, the sheet stacking portion is provided with a through hole configured to be expose in the case where no sheet is stacked on the stacking surface, the through hole penetrating the stacking surface to a bottom surface of the sheet stacking portion, and the contact portion is positioned inside the through hole in the case where no sheet is stacked on the stacking surface.

A latch operating portion, which is made of an elastically deformable constituent material, connected to a knob portion of a latch, and operated by an operator to insert and remove a claw portion provided at a latch beam portion into and from a through hole of trays, is provided, and in a case in which the knob portion is pushed toward a wall portion by a fingertip operation to elastically deform the constituent material, the latch operating portion separates the claw portion from the through hole, restores the elastically deformed constituent material to its original shape when the fingertip is released, and inserts the claw portion into the through hole.

A sheet stacking device includes a sheet stacker, an image capturing device, and circuitry. The sheet stacker stacks a sheet. The image capturing device captures an image of a whole face of the sheet stacked in the sheet stacker. The circuitry detects a size of the sheet stacked in the sheet stacker, whether the sheet stacked in the sheet stacker is a last sheet, or whether an image is formed on an image forming face of the sheet, based on image data of the image captured by the image capturing device.