Ricoh Company, Ltd.

Masanobu Kimata

Yasuki Matsuura

Kenichi Takekawa

Isao Yasuda

Yohei Yamazaki

Hidefumi Shibata

Wataru Takahashi

Masahiro Tamura

Keisuke Sugiyama

Yuusuke Shibasaki

Tomomichi Hoshino

Michitaka Suzuki

Shinji Asami

Kei Sasaki

Kazuki Ota

Yoshihide Sugiyama

Minoru Hattori

Yohzoh Dohki

Ryohei Morisaki

Ikumi Takashima

Yusuke Hirono

Akihiro Tsuno

Maki Nishide

Koji Furuta

Yuji Susaki

Shigeru Mizuno

Norihiko Murakami

Yuta Yanai

Yuji Miyachi

Masaaki Kawasaki

Toru Horio

Miyuki Ito

Nakayama Naoya

Ueno Shinichi

A sheet processing apparatus includes: a center-folder to perform a center-folding process on a sheet bundle including multiple sheet materials; a back-crimp binder to: form a back portion on the sheet bundle subjected to the center-folding process; and perform a crimp-binding process on the back portion; and a controller configured to: cause the center-folder to perform the center-folding process; and cause the back-crimp binder to perform the crimp-binding process on the back portion while forming the back portion on the sheet bundle in the crimp-binding process.

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

A medium processing apparatus includes a conveyor, a tray, a binder, a mover, and a switcher. The switcher includes a first passage, a second passage, and a movable wall. The movable wall guides a guided portion of the binder to the second passage when the guided portion moving along the first passage from an end side to a center side contacts the movable wall; causes the guided portion to pass when the guided portion moving along the second passage from the end side to the center side contacts the movable wall; guides the guided portion to the first passage when the guided portion moving along the second passage from the center side to the end side contacts the movable wall; and causes the guided portion to pass when the guided portion moving along the first passage from the center side to the end side contacts the movable wall.

Medium processing apparatus and image forming system incorporating same

A conveying device includes a plurality of conveyance passages, a plurality of conveyors, a conveyance passage guide, a conveyance sensor, a conveyance availability detector, and circuitry. The conveyance passages are disposed in parallel to each other. Each conveyors is disposed in corresponding one of the conveyance passages. The circuitry is configured to: set a set retention time for which a conveyance object is to be retained in available one of the conveyance passages; control one of the conveyors to convey and stop conveying the conveyance object guided by the conveyance passage guide; measure a retention time of the conveyance object conveyed in the available one of the conveyance passages; and cause the one of the conveyors to eject the conveyance object from the available one of the conveyance passages in a case in which the retention time of the conveyance object is longer than the set retention time.

Conveying device and image forming apparatus including conveying device

A sheet post-processing apparatus includes an output tray on which a sheet ejected from a sheet outlet is stacked; a wall disposed downstream from the output tray in a sheet ejection direction; and an alignment member configured to contact and move the sheet on the output tray, to bring a rear end of the sheet in the sheet ejection direction into contact with the wall for alignment. The alignment member is selectively set at three positions of: an alignment position protruding beyond the wall toward the output tray to contact the sheet on the output tray; a withdrawn position inward of the wall; and a home position between the alignment position and the withdrawn position.

Sheet post-processing apparatus and image forming system incorporating same

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

Plural conveying paths including guide plates are arranged on both sides of a sheet in its thickness direction, being linked from an upstream side to a downstream side in a conveying direction of the sheet. A stopper is arranged in at least one of the conveying paths to make contact with a leading edge of the sheet conveyed through the conveying paths thereby stopping the sheet and forming a bending portion at the sheet. A pair of folding rollers is arranged between the conveying paths to nip the bending portion of the sheet to form a folding line at the sheet. An adjusting member is provided on the guide plates to adjust a space between the guide plates.

Sheet folding device and image forming apparatus

A sheet processing apparatus includes a folding unit that folds a sheet, a sheet storing unit that stores the sheet folded by the folding unit, a post-processing unit that performs a non-fold process on the sheet transported from the folding unit, a path select unit that switches the sheet destination to the sheet storing unit or the post-processing unit, and a control unit that detects whether there is a fold process command and/or a non-fold process command, and controls the path select unit according to the detecting result. The control unit controls the path select unit to switch the sheet destination to the post-processing unit when there is a non-fold process command, regardless of a fold process command.

Sheet processing apparatus, and image forming system

A sheet processing apparatus includes: a stapling unit that staples a sheet member; a moving unit that linearly moves the stapling unit; a rotating unit that rotates the stapling unit by abutment of an abutting member against an abutted member when the stapling unit is moved; a holding unit that holds the stapling unit rotated; and a restricting member that restricts rotation of the stapling unit by abutting against the abutting member.

Stapler rotation device for sheet processing apparatus

A sheet folding device for performing single-sheet folding and multi-sheet folding with a single feed path, the device including: a conveying unit that conveys a sheet; a restraining unit that stops a leading edge of the sheet; a pair of folding rollers that fold the sheet; and a guiding member that guides a bend of the sheet to a nip between the pair of folding rollers, wherein the guiding member is positioned at different sheet-guiding positions for single-sheet folding and multi-sheet folding.

Sheet folding device, image forming apparatus, and sheet folding method

A sheet post-processing apparatus includes: a sheet conveying unit that conveys a sheet; a sheet accumulating feed path that is arranged on a downstream side of the sheet conveying unit in a sheet conveying direction and being capable of accumulating therein a plurality of sheets; a stopping member that stops a leading edge of a sheet conveyed into the sheet accumulating feed path; a width aligning unit that aligns a width of the sheet stopped by the stopping member and accumulated in the sheet accumulating feed path; and a control unit that performs control to cause: the sheet conveying unit to convey a sheet into the sheet accumulating feed path; the stopping member to stop the leading edge of the sheet; and the width aligning unit to align the width of a sheet every time a sheet is accumulated in the sheet accumulating feed path.

Sheet post-processing apparatus

A media-sheet post-processing apparatus performs post-processing on a media sheet delivered thereto. The sheet media post-processing apparatus includes a media-sheet conveying unit configured to convey a media sheet while moving in a media-sheet conveying direction; and a move drive unit configured to move the media-sheet conveying unit in the media-sheet conveying direction in such a manner that a difference between an amount that the media sheet is conveyed by the media-sheet conveying unit and an amount that the media-sheet conveying unit is moved is kept constant.

Media-sheet conveying unit

A sheet medium adjustment apparatus, e.g., in an image forming system, includes: an ejector to eject a conveyed sheet; a stacking device to stack each sheet ejected from the sheet ejector into a stack on a tray; a moving device to shift the stacking device in a movement direction perpendicular to a sheet-ejecting direction; a sheet aligning member to align ends of the sheets in the stack that are parallel to the sheet-ejecting direction; a stepping motor to move the sheet aligning member; and an evacuation device to evacuate the aligning member by an amount representing an evacuation displacement in the movement direction at a timing of aligning the sheet, the evacuation displacement being determined adaptively according to at least one of an attribute of a given sheet in the stack, an attribute of the stack as a whole and an attribute of the tray.

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Aichi, Japan

Masanobu Kimata