A sheet stacking device includes a stacking tray, an aligning mechanism, a pair of alignment members, and a pair of height detectors. The pair of alignment members can move independently in a sheet width direction and in an up and down direction, and contact side edges in the sheet width direction of sheets stacked on the stacking tray, from both sides in the sheet width direction, so as to align the sheets in the sheet width direction. The pair of height detectors allow the pair of alignment members to contact an upper surface of the sheets near side edges of the sheets, so that sheet heights on both sides in the sheet width direction are detected. The sheet stacking device can individually correct heights of the pair of alignment members when aligning the sheets, based on the sheet heights detected by the pair of height detectors.

An image forming apparatus includes a side regulating plate provided in a sheet feeding cassette and a regulating surface to regulate an end position of a sheet stored in the sheet feeding cassette. A first arm connected with a first connector of the side regulating plate and a second arm connected with a second connector of the side regulating plate pivot on an axis extending in the gravity direction, wherein the second connector is different from the first connector in terms of a feeding direction. A first fixing part fixes the first arm to the sheet feeding cassette, and a second fixing part fixes the second arm to the sheet feeding cassette, wherein the first arm intersects with the second arm when viewed in the gravity direction when the side regulating plate is located in at least a part of a movable range of the side regulating plate.

Provided is a paper sheet replenishing box (paper feed device) for replenishing reserve fund in each circulation-type paper sheet storage unit, wherein paper sheets of each denomination can be replenished from one paper sheet replenishing box in which paper sheets of different denominations having different sizes are accommodated together to a circulation unit of the respective circulation-type paper sheet storage units. The paper sheet replenishing box includes a first tray piece 201 in which a plurality of pieces of first paper sheets P1 are placed in a stacked state, a second tray piece 211 arranged immediately below the first tray piece, on which a plurality of pieces of second paper sheets P2 having a different longitudinal dimension from that of the first paper sheet are placed in a stacked state, and rear-end regulating members 204 and 214 that align front end positions in a transport direction of respective paper sheet bundles to predetermined positions. After all the first paper sheets in a bundle on the first tray piece have been fed by a feed unit 160, an uppermost surface of the second paper sheets in a bundle on the second tray piece becomes a state capable of coming in contact with the feed unit.

A paper feed mechanism includes: a paper storage to store sheets of paper; an air blowing unit disposed on each of both sides of the paper storage in a second direction orthogonal to a first direction corresponding to a paper conveyance direction, in which the air blowing unit blows air to a side end of each of the sheets of paper in the paper storage to float one or some of the sheets of paper in the paper storage; and a paper conveyance unit disposed above the paper storage, in which the paper conveyance unit holds, by suction, an uppermost sheet of paper among the floated sheets of paper, and conveys the uppermost sheet of paper. An air blowing position of the air blowing unit is changeable in the first direction according to information about the sheets of paper.

A medium feeding apparatus includes a medium mounting section, a movable edge guide that guides both edges of the medium mounted on the medium mounting section and has a first edge guide and a second edge guide, a feeding section, and a width adjuster configured to adjust a guide width depending on the medium. The width adjuster includes a first adjuster having a first holding section and a first guiding section, and the second adjuster having a second holding section and a second guiding section. The first holding section holds a part of the first edge guide, the first guiding section guides the edge of the medium between the first edge guide and the second guiding section, the second holding section holds a part of the second edge guide, and the second guiding section guides the edge of the medium between the second edge guide and the first guiding section.

A sheet cassette includes a sheet mounting unit, a first side guide, a second side guide, and a biasing unit. The first side guide comes into contact with the sheet at one end in a sheet width direction. The sheet width direction is a direction perpendicular to a sheet conveying direction in which the sheet is conveyed out from the sheet mounting unit. The sheet width direction is parallel to the mounting surface. The second side guide comes into contact with the sheet at the other end in the sheet width direction. The biasing unit has a biasing member. The biasing member biases at least the first side guide in a direction approaching the second side guide. The first side guide can rotate around a rotation shaft intersecting the mounting surface in a direction in which the first side guide approaches and separates from the second side guide.

A medium aligning device includes a stacking tray that stacks a medium discharged by a discharge section that discharges the medium, a side end aligning portion that is movable in a width direction that is a direction intersecting with a medium discharge direction of the discharge section, and positions and aligns a side end in the width direction of the medium stacked on the stacking tray, a rear end aligning portion that is movable in the width direction and positions and aligns a rear end that is an upstream end of the medium stacked on the stacking tray in the discharge direction, and a transmission portion that transmits the movement of the side end aligning portion in the width direction to the rear end aligning portion, in which a play in the width direction is provided between the side end aligning portion and the transmission portion.

A placement method using a placement device provided with a first process of pressing a transfer plate a topmost layer sheet member so as to pick up it when a restraint device is rendered a restraining state, a second process of rendering the restraint device a non-restraining state to render the transfer plate an inclined state while pressing down the plurality of sheet members from above in the stacking direction by a base end part side of the transfer plate rendered the inclined state, a third process of inserting the restraining blade into the space formed between the topmost layer sheet member and the sheet member of the layer below it and again render the restraint device the restraining state, and a fourth process of making the transfer plate retract upward while returning it to the horizontal state and transferring the topmost layer sheet member to the holder.

The application relates to a media drawer for a media processing device with a housing and an electrically-driven lift table arranged in the housing, where the media drawer is movable between a first position, in which the media drawer is arranged in the media processing device in such a manner that media can be removed from the media drawer by the media processing device, and a second position, in which media can be inserted into the media drawer, where the lift table can be supplied with power in the first position by the power supply of the media processing device. Further, the media drawer can exhibit a power supply that is independent of the power supply of the media processing device, via which the lift table can be provided with power in the second position.

A sheet storage apparatus includes: a storage portion configured to store a sheet and to be inserted into and drawn out of an apparatus body along a first direction; a regulation member configured to be movable in the first direction with respect to the storage portion and including a regulating surface configured to regulate an end position in the first direction of the sheet stored in the storage portion; a first arm and a second arm each pivotably connected with the regulation member; and a fixing portion configured to fix the first and second arms to the storage portion. A position of a first connecting portion where the first arm is connected with the regulation member is different from a position of a second connecting portion where the second arm is connected with the regulation member in terms of a second direction intersecting with the first direction.