Nisca Corporation

Sharp Kabushiki Kaisha Corporation

Makoto Shimura

Takashi Saito

Misao Kobayashi

Jinichi Nagata

Shin Tsugane

Hideo Yoshikawa

Masato Hosaka

Kozo Yamaguchi

In a method of aligning a sheet on a tray, the sheet on the tray is transferred toward a stopper member in one direction by a transfer device. Then, the sheet is moved in a sheet width direction perpendicular to the one direction to align the sheet in the sheet width direction by an aligning device. Further, force is provided to the sheet on the tray to move the sheet in the one direction by the transfer device while the aligning device regulates the sheet in the sheet width direction.

Method of aligning sheets

A sheet aligning apparatus includes a tray device for piling and storing sheets from a sheet outlet, a sheet discharging and delivering device arranged above the tray device, and a shift device for moving the sheet discharging and delivering device between an operating position of pressing the uppermost sheet with predetermined pressing force and a non-operating position of lightening or releasing pressing force. The apparatus also includes a regulating stopper member for colliding the sheets sent by the sheet discharging and delivering device at the sheet front or back ends for regulating sheet position, an aligning device for regulating the sheets on the tray in a direction crossing the sheet discharging direction, and a control device for controlling the sheet discharging and delivering device, the shift device and the aligning device.

Sheet aligning apparatus, post processing apparatus and image forming apparatus having the same

An apparatus is provided with a processing trayto mount sheets ejected from an image formation section, aligning means (aligning plates, etc.) for aligning end portions of a sheet ejected on the processing tray, a post-processing apparatusthat performs binding processing on the sheets aligned by the aligning means, and moving means (unit moving motor, etc.) for moving the post-processing apparatusto a plurality of post-processing positions set to perform the binding processing at different binding processing target position on the sheets, and moves the sheets to a post-processing undergoing position corresponding to the post-processing position substantially in parallel with a travel direction of the post-processing apparatus. It is thereby possible to perform the binding processing on the ejected sheets appropriately while implementing the apparatus compact in size.

Sheet post-processing apparatus and image formation apparatus provided with the same

A sheet alignment device is provided with a movable aligning member and a variable push member, movable to push one or more sheets fed onto a tray toward a sheet aligning reference surface defined on the tray, thus to align the sheets. The sheets of large size are pushed at the point close to the center of gravity of the sheets toward the aligning reference surface mainly by the variable push member, and the sheets of small size are pushed at the point close to the center of gravity of the sheets toward the aligning reference surface mainly by the movable aligning member. The sheets of any size can be properly pushed stably without experiencing an undesirable rotational moment, thus to be exactly aligned.

Sheet alignment device for use in a sheet handling device

In a sheet storage apparatus having a plurality of bin trays for stacking sheets fed sequentially from an image forming device into sheaves of sheets, sheet accommodating spaces formed on the respective bin trays for receiving the sheets fed from the image forming device are made wide at a sheet intake position so as to successfully introduce the sheets thereinto and narrow at the positions above and below the sheet intake position so as to effectively store the sheets. When the sheets introduced into the sheet accommodating space at the sheet intake position comes to a prescribed number or height, the bin trays are moved upward or downward to narrow the sheet accommodating spaces, thus to compress a bulky stack of sheets. When taking out the finished sheaves of sheets from the apparatus, the sheet accommodating spaces formed between the bin trays are made relatively wide.

Sheet storage apparatus with sheet curl correction

A sorter has a plurality of sorting tray to receive copied sheets. The sorting trays are moved vertically upon rotation of screw rods. The screw rod has a spiral cam groove with a predetermined cam profile formed on the outer periphery thereof. Cam followers of the sorting tray is engaged with the spiral cam groove. The cam groove is formed such that a distance between adjacent sorting trays in the vertical direction the screw rod is stopped at a first rotational position is different from that when the screw rod is stopped at a second rotational position.

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Nirasaki, Japan

Makoto Shimura