Ricoh Company, Ltd.

Shigefumi Soga

Hiroki Yoshida

Terumitsu Azuma

Takeshi Hirabayashi

Kentaro Fukami

Shinji Tanoue

Kazumasa Takeuchi

Daishi Watanabe

Kazuhiro Ando

Yukio Noguchi

Ryohei Morisaki

Fumihiro Kitahara

Chisa Kato

Kazuhiko Nakaya

Toshikazu Satoh

Koichi Ichihara

Youji Mouri

Hisatsugu Niki

A sheet feeding device includes a roller pair being mutually non-separable; and a roller pair being mutually separable. The sheet feeding device temporarily stops a sheet in a registration position of the non-separable roller pair and then resumes feeding the sheet. The sheet feeding device feeds sheets such that a following sheet reaches the registration position from the separable roller pair after completion of ejection of a preceding sheet.

Sheet feeding device, image reading device, and image forming apparatus

A sheet processing device provided with a stacking unit configured to stack thereon one or more conveyed sheets, a staple unit configured to staple a bundle of sheets stacked on the stacking unit, a moving unit configured to move the staple unit to a staple position, and a projecting and retrieving unit configured to project and retrieve the stacking unit in a space overlapped with a motion space for the staple unit to move therein.

Sheet processing device, image forming system, and sheet processing method

A sheet processing apparatus includes a fixed tray and a movable tray. The fixed tray is fixed at its downstream portion in a sheet transport direction and includes a sheet loading surface. A downstream portion of the sheet loading surface of the fixed tray is positioned at a higher level than an upstream portion thereof. The movable tray is pivotally supported, at its upstream portion, by a pivot support provided on the fixed tray. An angle between a sheet loading surface of the movable tray and a horizontal direction is more gentle than an angle between the sheet loading surface of the fixed tray and the horizontal direction.

Sheet stacker and image forming apparatus

A paper processing apparatus includes: a discharging unit that discharges the paper onto a staple tray; a paper returning unit that reverses the paper discharged by the discharging unit and performs alignment in a conveying direction by abutting the paper against a rear end reference fence; a supporting unit that supports the discharging unit in a state capable of coming in contact with or separating from the paper; a contact and separation unit by which the discharging unit comes in contact with or separates from the paper; and a pressurizing unit that is moved by the contact and separation unit, does not load the discharging unit in a standby state where the discharging unit is held apart from the paper, and applies contact pressure in a state where the discharging unit is in contact with the paper.

Paper processing apparatus and image forming apparatus

A sheet processing apparatus includes: a staple tray on which sheets are stacked temporarily and stapled after being aligned together and from which the stapled sheets are discharged to a discharge tray; a discharger to discharge the sheets to the staple tray; a rear end reference against which rear ends of the sheets are abutted to be aligned together; a returner to return the sheets discharged by the discharger and to align the sheets together in a conveying direction based on the rear end reference fence; a lifter to lift and lower the returner with respect to a sheet; and a guide configured to guide the sheets toward the rear end reference fence when the sheets are returned and to be lifted and lowered in synchronization with the lifting and lowering by the lifter.

Sheet returning unit for post processing apparatus

An image reading apparatus includes a line sensor for reading an image of an original, a scanning optical system that has a light source and scans the original, a reference reflection member provided in such a position as to reflect a light emitted from the light source, a buffer memory for storing data of the image, an intermittent reading part interrupting and restarting scanning performed by the scanning optical system based on a residual storage capacity of the buffer memory, and a light amount variation correction part correcting a variation in an amount of light of the light source during an interruption of the scanning based on an amount of reflected light from the reference reflection member.

Image reading apparatus and copier

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Aichi, Japan

Shigefumi Soga