Ricoh Company, Ltd.

Kyosuke Nakada

Takahiro Watanabe

Tomohiro Furuhashi

Shuuya Nagasako

Akira Kunieda

Kazuya Yamamoto

Kiichiro Goto

Keisuke Sugiyama

Tomomichi Hoshino

Masahiro Tamura

Junya Suzuki

Kazunori Konno

Yasuo Niikura

Yuusuke Shibasaki

Takamasa Matsumoto

Youhei Niitsuma

Tomohiro Yoshizaki

Michitaka Suzuki

Yuji Suzuki

Ryo Takahashi

Kiyoshi Hata

Hidetoshi Kojima

Kei Sasaki

Takashi Fukumoto

Kohjiroh Haga

Yuuta Mori

Satoru Takano

Yasushi Tsuruoka

Shintaro Matsumoto

Kazuhiko Kitano

Mamoru Yorimoto

Takeshi Watanabe

Yuichiro Maeyama

Kahei Nakamura

Isao Matsushima

Yuuji Suzuki

Takashi Saito

Jun Yamada

Takuya Sano

Shingo Matsushita

Joh Ebara

Ikuhisa Okamoto

Takeshi Akai

Akihiro Musha

Takaya Ochiai

Takehisa Shimazu

Masatada Satoh

A feeding device includes a plurality of suction units, disposed above a conveyed medium stacked on a stacker, to attract the conveyed medium. At least one of the plurality of suction units includes a rotary fan including a board and a plurality of walls extending from the board; and a driver to rotate the rotary fan. The at least one of the plurality of suction units generates a vortex air with a side of the board with the plurality of walls directed to the conveyed medium. The at least one of the plurality of suction units being a suction unit generates a vortex air.

Feeding device, image forming system, and conveyed medium inspection system

A medium-suction apparatus includes a conveyer to convey a medium in a conveyance direction, a first suction unit to perform suction operation on the medium to attract the medium to the conveyer, and a second suction unit to perform the suction operation on the medium to attract the medium to the conveyer. The second suction unit being disposed next to the first suction unit in a width direction perpendicular to the conveyance direction. The second suction unit starts the suction operation after the first suction unit starts the suction operation.

Medium-suction apparatus, image forming system, and medium inspection system

A feeding device to feed a conveyed medium stacked on a stacker, includes a first suction unit, a second suction unit, and third suction units. The first suction unit includes a suction chamber; a suction fan to exhaust air from the suction chamber; and a first driver to rotate the suction fan. The suction units are disposed above the conveyed medium stacked on the stacker. The second suction unit includes a rotary fan including a board and a plurality of walls extending from the board; and a second driver to rotate the rotary fan. The second suction unit generates a vortex flow directed to the conveyed medium. The plurality of third suction units is disposed in a direction perpendicular to a conveyance direction of the conveyed medium and attracts ends of the conveyed medium in the direction perpendicular to the conveyance direction.

A sheet processing device includes a sheet processing unit that is moved to perform sheet processing on a sheet; a sheet-processing moving unit that moves the sheet processing unit; a drive-mode determining unit that determines a drive mode of the sheet-processing moving unit; and a drive control unit that drives the sheet-processing moving unit in accordance with the drive mode. The drive-mode determining unit determines the drive mode such that the sheet processing unit is moved at combination acceleration that is a combination of first acceleration and second acceleration with a shift of time that is determined based on the cycle of the natural vibration that occurs during acceleration of the sheet processing unit.

Sheet processing device, image forming system, and computer-readable storage medium

According to an embodiment, there is provided a sheet processing apparatus includes a stacking unit that stacks a sheet conveyed thereto; a first alignment unit that aligns the sheet or a bundle of sheets stacked in the stacking unit in a sheet conveying direction; a second alignment unit that aligns the sheet or the bundle of sheets stacked in the stacking unit in a direction orthogonal to the sheet conveying direction; a pressing unit that presses the bundle of sheets at an end portion thereof on a predetermined one side; and a control unit that causes at least one of the first and second alignment units to execute an alignment operation during a press operation of the sheet or the bundle of sheets performed by the pressing unit.

Sheet 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 ejecting device includes: a sheet ejecting unit configured to eject a sheet; a stacking unit on which the sheet that is ejected by the ejecting unit is stacked; an aligning unit configured to align the sheet in a direction orthogonal to the direction in which the sheet is ejected; and a blowing unit configured to be provided to the aligning unit and blow a wind toward the ejected sheet.

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

A sheet processing apparatus includes: a first conveying member pair that folds a sheet; a second conveying member pair that conveys downstream the sheet folded by the first conveying member pair; and a third conveying member pair that further folds the sheet folded by the first conveying member pair. The second conveying member pair is rotatable forward and reversely when driven to convey, and is locked in one rotational direction but is rotatable in the other rotational direction when not driven.

A sheet processing apparatus includes: first to third pairs of conveying members; and a bifurcating claw that moves to a first guiding position for guiding the sheet to the second pair of conveying members, a second guiding position for guiding a deflected portion of the sheet to the third pair of conveying members, and a third guiding position for guiding a leading end of the sheet to the third pair of conveying members. The second pair of conveying members is rotated backward in a state in which the sheet is held by the first pair of conveying members and the second pair of conveying members, to guide the deflected portion to the third pair of conveying members and cause the deflected portion to be folded by the third pair of conveying members.

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

A recording medium discharging device includes a discharging unit configured to discharge a recording medium from a discharge port; a tray unit on which the recording medium discharged from the discharging unit is stacked; and an air blower configured to blow air in a direction substantially parallel to a direction in which the recording medium is discharged.

Recording medium discharging device

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 folding apparatus includes: a folded part forming unit that forms a folded part on the sheet by nipping a curved portion formed on a part of the sheet between an upstream first sheet conveying unit and a downstream second sheet conveying unit by holding a part of the sheet by the first sheet conveying unit and applying conveying force to the sheet to reverse the sheet upstream by the second sheet conveying unit; and a sheet leading end detection unit disposed downstream of or at almost same position as the second sheet conveying unit. The sheet is conveyed based on a detection timing of the sheet leading end detection unit such that the leading end of the sheet protrudes by a predetermined protrusion amount from the second sheet conveying unit immediately before applying conveying force to the sheet to reverse the sheet.

Sheet folding apparatus, image forming apparatus, and image forming system

A sheet processing apparatus including a first conveying member that conveys a sheet, a second conveying member that receives the sheet conveyed by the first conveying member and further conveys the sheet to a subsequent stage, a third conveying member that receives the sheet conveyed by the first conveying member and further folds the sheet, a guiding member that guides the sheet when the sheet is folded by the third conveying member, and is arranged between the second conveying member and the third conveying member. The sheet is guided along the guiding member when a bending part of the sheet is conveyed to the third conveying member by rotating the second conveying member in a reverse direction while the sheet is held by the first conveying member and the second conveying member.

A sheet folding apparatus includes: a first sheet conveying unit; a second sheet conveying unit that is disposed downstream of the first sheet conveying unit; a folded part forming unit that forms a folded part on a sheet by nipping a turned-back portion formed on a part of the sheet between the first sheet conveying unit and the second sheet conveying unit; a second conveying path that bifurcates from the first conveying path and in which a sheet with the folded part is conveyed; and a pushing member that is movable between a pushing position at which the pushing member pushes the turned-back portion toward the folded part forming unit and a retracted position. The pushing member also serves as a changing unit that changes a direction of a leading end of the sheet that is conveyed in the first conveying path into a direction toward a second conveying path.

A sheet processing apparatus includes: a first pair of conveying members that convey a sheet; a second pair of conveying members that receive the sheet conveyed by the first pair of the conveying members and further conveys the sheet to a subsequent stage; and a third pair of conveying members that fold the sheet by rotating the second pair of the conveying members in a reverse direction while the sheet is held by the first pair of the conveying members and the second pair of the conveying members. One of the conveying members of the second pair serves as one of the conveying members of the third pair.

Growing community of inventors

Kanagawa, Japan

Kyosuke Nakada