Nisca Corporation

Sharp Kabushiki Kaisha Corporation

Mamoru Akiyama

Tetsuya Noda

Sei Takahashi

Jinichi Nagata

Seiji Nishizawa

Hidetoshi Kaneko

Shin Tsugane

Hideo Yoshikawa

Koji Kanda

Tomohisa Shimizu

Toshiya Sato

Toshiyuki Ito

Kenji Baba

Eiichi Kubo

Atsumi Kobayashi

Motoaki Nakayama

Hiroshi Mukouyama

Junko Kurakane

A sheet transport apparatus that transports a sheet to a reading section for reading the sheet, has a reading front roller pair contacting with a front end of the sheet to form a register loop in the sheet; a first transport path extending curvingly toward the reading front roller pair; a second transport path extending curvingly toward the reading front roller pair after joining the first transport path; a first register space in which a register loop is formed in a sheet guided along the first transport path; and a second register space in which a register loop is formed in a sheet guided along the second transport path. The first register space is provided on the upstream side of a junction position in which the first transport path joins the second transport path, and the second register space is provided on the downstream side of the junction position.

Sheet transport apparatus

A sheet transport apparatus for transporting a sheet along a transport path has a sheet transport mechanism having a plurality of transport rollers for transporting a sheet; and a jam clearing mechanism for removing the sheet, when the sheet causes a transport failure and is jammed on the transport path. The jam clearing mechanism has a coupling member coupled to a transport roller, a jam clearing dial that transfers a rotation force to the transport roller through the coupling member, and a switching device for switching so that the coupling member separates from the transport roller in transporting a sheet, while being coupled to the transport roller in clearing a jam.

Sheet transport apparatus with jam clearing dial

In one embodiment of the present invention, a sheet post-processing apparatus includes an ejection path that successively feed sheets each with an image found thereon from an ejection outlet. A processing tray is disposed under the ejection outlet to temporarily store sheets fed from the ejection path. A port processing unit performs post processing such as binding and punching. The post processing unit is located under the ejection path and is provided with a cooling fan that sends air toward the post processing unit.

Sheet post-processing apparatus and image formation apparatus

A document feeding device includes an upstream guide member that forms an upstream side of a document conveying path along which a document is guided from a sheet feeding tray to a platen, and a downstream guide member located between the upstream guide member and the platen. The document feeding device has a guide moving mechanism that slidably moves the downstream guide member away from an opposite guide member located opposite the downstream guide member upon a pivoting operation of the upstream guide member. Consequently, even if the document conveyed toward the platen is, for example, inappropriately conveyed to cause jamming, the document can be easily removed without being damaged.

Document feeding device and document reading apparatus with opening upstream and downstream guide members

An original feeding apparatus includes a feeder tray for stacking originals, a separating device for separating the originals into a single sheet, and a feeding device for feeding the original to the separating device. The feeding device is raised or lowered between a feeding position where the feeding device contacts an uppermost original stacked on the feeder tray, and a retracted position where the feeding device is separated from the uppermost original. A drive device and a control device are disposed for raising and lowering the feeding device. The control device adjusts a rotating speed of the drive device for raising and lowering the feeding device according to a reading mode, so that the feeding device is lowered at a different speed to touch the uppermost original.

Original feeding apparatus and image reading apparatus

Automatic document feeder

An automatic document feeder for feeding and discharging a document or documents to and from a document handling device such as a copying machine includes a document supply unit having a separation roller and register rollers, positioning unit and discharge unit, which are driven by a drive unit having a single reversible driving motor. The separation roller is operated to forward the document to a document reading portion when driving the driving motor in a first direction, and stopped when driving the driving motor in a second direction. The register rollers are operated only when driving the driving motor in a second direction. By slowing down the separation roller just before the document collides with the register rollers, the document can be transferred at high speed without being damaged.

Growing community of inventors

Yamanashi-ken, Japan

Mamoru Akiyama