Ricoh Company, Ltd.

Yasushi Tsuruoka

Takamasa Matsumoto

Kei Sasaki

Junya Suzuki

Ryo Takahashi

Hidetoshi Kojima

Yasuo Niikura

Kazunori Konno

Takashi Fukumoto

Kiichiro Goto

Youhei Niitsuma

Kohjiroh Haga

Yuuta Mori

Satoru Takano

Shintaro Matsumoto

Masahiro Tamura

Takahiro Watanabe

Tomohiro Furuhashi

Kazuya Yamamoto

Shuuya Nagasako

Akira Kunieda

Keisuke Sugiyama

Tomomichi Hoshino

Kyosuke Nakada

Kazuki Seto

Jun Saito

Shohei Saito

Kazuhiko Kitano

Hisayoshi Sugawara

Ryohsuke Akaishi

Hiroaki Utagawa

Masakazu Fujita

Kensuke Fukuchi

A medium processing apparatus includes a crimper, a liquid applier, a driving source, and a binding load detector. The crimper presses and deforms a part of a medium bundle, which is a plurality of sheet-shaped media bundled, to bind the medium bundle. The liquid applier applies liquid to a position on the media at which binding is to be performed by the crimper. The driving source operates the crimper. The binding load detector detects a load of the crimper during the binding. The liquid applier adjusts an amount of the liquid to be applied to the media in accordance with a magnitude of the load during the binding detected by the binding load detector.

Medium processing apparatus and image forming system incorporating same

A medium processing apparatus includes a conveyor, a liquid applier, and a crimper. The conveyor conveys a medium. The liquid applier applies liquid to a part of the medium conveyed by the conveyor. The medium is at least one medium. The crimper presses and deforms a bundle of media including the medium to which the liquid is applied by the liquid applier, to bind the bundle of media. The liquid applier includes a liquid application member and a retained liquid amount detector. The liquid application member applies the liquid to a position to be bound by the crimper on the medium. The retained liquid amount detector detects an amount of the liquid retained by the liquid application member.

A sheet sorting device includes a plurality of trays, a tray shifter, a tray stop position detector, and circuitry. The plurality of trays is disposed in multiple stages in a vertical direction and configured to stack a sheet. The tray shifter is configured to move the plurality of trays separately in a tray shift direction. The tray stop position detector is configured to detect stop positions of the plurality of trays separately. The circuitry is configured to cause the tray shifter to move the plurality of trays to home positions in an initial operation, at least one tray having a home position opposite to a home position of another tray in the tray shift direction. The circuitry is configured to, while moving the plurality of trays at a same time in the initial operation, cause the tray shifter to move the trays in directions opposite to each other.

Sheet sorting device, post-processing apparatus, and image forming system

A sheet discharging device includes a shift trayon which a sheet Pis stacked, a discharging rollerthat discharges a sheet Ponto the shift tray, a blowing devicethat sends air to a lower surface of the sheet Pdischarged by the discharging roller, a blocking memberthat blocks air sent to the lower surface of the sheet Pfrom a blowing port-of the blowing device, and a control unit that controls the blocking amount of the blocking member. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.

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

A sheet discharging device includes a shift trayon which a sheet P1 is stacked, a discharging rollerthat discharges a sheet P2 onto the shift tray, a blowing devicethat sends air to a lower surface of the sheet P2 discharged by the discharging roller, a blocking memberthat blocks air sent to the lower surface of the sheet P2 from a blowing port-of the blowing device, and a control unit that controls the blocking amount of the blocking member. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.

A sheet stacking apparatus including: a discharge unit configured to discharge a sheet through a discharge port; a stack unit configured to stack the discharged sheet thereon; and a plurality of blowing units configured to supply air to a discharge side of the discharge unit while the sheet is discharged, wherein the blowing units are disposed, below the discharge port, aligned with a direction perpendicular to a sheet discharge direction.

Sheet stacking apparatus, image forming system and sheet stacking method

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Kanagawa, Japan

Yasushi Tsuruoka