Ricoh Company, Ltd.

Furuno Electric Company Limited

Nagayasu Yoshida

Kenji Hari

Manabu Yamanaka

Wataru Takahashi

Ryo Suzuki

Takashi Saito

Nobuyoshi Suzuki

Keisuke Sugiyama

Yuusuke Shibasaki

Takuya Morinaga

Shingo Matsushita

Katsuhiro Kosuge

Ryuji Yoshida

Ikuhisa Okamoto

Akihiro Musha

Hirotaka Hayashi

Ryohei Morisaki

Ikumi Takashima

Akihiro Tsuno

Katsuji Yamaguchi

Shinya Komatsu

Eiji Hara

A sheet feeding device feeds a sheet in a feed direction. The sheet feeding device includes a loading portion, a feeler, and a first detection sensor. The sheet is to be placed on the loading portion. The feeler rotates from a reference position to a pushed position around a support shaft in response to a push by a downstream end of the sheet, which is placed on the loading portion, in the feeding direction. The first detection sensor detects a rotation of the feeler from one of the reference position and the pushed position to the other of the reference position and the pushed position. The loading portion includes a second detection sensor to detect a state in which the sheet is placed on the loading portion.

Sheet feeding device and image forming apparatus

A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.

Sheet processing apparatus and image forming system

A post-processing apparatus includes a binding device, a closing device, a driver, and a changeover switch. The binding device binds a sheet bundle. The closing device closes an entrance to a binding position at which the binding device binds the sheet bundle. The driver moves the closing device to a closing position to close the entrance. The switch performs switching to implement a state in which the binding device is able to bind the sheet bundle when the closing device moves to the closing position. The closing device includes an avoidance operation portion to move to the closing position to operate the switch, and a drive coupler coupled to the avoidance operation portion to move the avoidance operation portion to the closing position. A coupling state between the avoidance operation portion and the drive coupler is released when movement of the avoidance operation portion to the closing position is prevented.

Post processing apparatus and image forming system

Pressing unit for sheet folding device

Sheet processing apparatus for pressing a fold line and image forming system

According to an aspect of an embodiment, a sheet processing apparatus includes: a conveying unit configured to convey sheets; a stacking unit configured to stack the conveyed sheets to form a sheet stack; and a binding unit configured to include a pair of toothed jaw and bind the sheet stack by pressing the sheet stack between the pair of toothed jaw, wherein at least one portion of edges of the toothed jaw is rounded.

Sheet processing apparatus having binding unit and image forming system thereof

Growing community of inventors

Kanagawa, Japan

Nagayasu Yoshida