Ricoh Company, Ltd.

Maki Nishide

Ryohei Morisaki

Norihiko Murakami

Akikazu Iwata

Yu Yamaya

Hiroshi Nishino

Masanobu Kimata

Yasuhiro Tomita

Fumiaki Tsuchiya

Hidefumi Shibata

Masaaki Kawasaki

Kenichi Kuroda

A sheet processing device for pressing a fold line formed in a sheet, the sheet processing device comprises a pressing portion configured to press a sheet while rotating about a rotation axis. The pressing portion includes a pressing unit having a projecting shape, disposed over a predetermined range in a direction of the rotation axis to have a position in a rotation direction about the rotation axis changed according to the direction of the rotation axis, and an impact absorbing member provided at a part of the pressing unit of the pressing portion, abutting on the sheet at first in the rotation direction of the pressing portion, the impact absorbing member configured to reduce impact upon abutting on the sheet.

Sheet processing device and image forming system

A sheet post-processing apparatus includes: a sheet stack tray; a rear-end-position regulating member, against which a rear end of the sheet on the tray is butted to align a position of the sheet in a sheet conveying direction to the stack tray, the rear end of the sheet being a rear end in the conveying direction; and a roller member that comes in contact with an upper surface of the sheet conveyed to an upper side of the tray, before the sheet is stacked on a stacking surface on the tray, and conveys the sheet stacked on the stacking surface toward the rear-end-position regulating member, wherein a rotation speed before stacking is set to be smaller than a rotation speed after stacking, and the rotation speed of before stacking is greater than zero.

Sheet post-processing apparatus and image forming system

An automatic document feeder includes a sheet feeding tray on which a document is stacked; a slit glass on which the document is scanned while moving; a discharge path in which the document is conveyed after the document is scanned; a document discharge unit to which the document is discharged through the discharge path; and a stamp device that makes a mark on a scanned surface of the document being in the discharge path. The stamp device includes a printing unit that faces the scanned surface of the document. The printing unit is movable between a first position at which the printing unit faces the document being in the discharge path and a second position at which the printing unit is retracted from the discharge path.

Automatic document feeder and image forming apparatus

Growing community of inventors

Kanagawa, Japan

Maki Nishide