Canon Kabushiki Kaisha

Atsushi Ogata

Hiroshi Kato

Masayoshi Fukatsu

Junichi Sekiyama

Hiroharu Tsuji

Kazushi Ino

Ichiro Yasumaru

Yasuyoshi Hayakawa

Daisuke Kaneko

Motohiro Furusawa

Tsuyoshi Waragai

Tomoyuki Iwakoshi

Tomoyuki Araki

Hiroki Kato

Teruo Komatsu

Masaru Aoki

Hironobu Ata

Koji Kawamura

Akihiro Nakamura

Akira Kuroda

Kenichiro Isobe

Takashi Kuwata

Yuri Yoshimura

Hiroshi Mano

Yoshitaka Zaitsu

Takahiro Uchiyama

Kazushi Suzuki

Yasuo Yoda

Toshikazu Tsuchiya

Naoto Tsuchihashi

Yoshiki Kudo

Yuichi Obara

Hiroto Endo

Kimihiko Nagano

A sheet conveyance apparatus is configured to interlock a first transmission mechanism and a second transmission mechanism such that the second transmission mechanism switches a rotational driving direction of a reverse rotary member between a normal rotation direction and a reverse rotation direction with a delay with respect to the first transmission mechanism starting transmission of a rotational driving force such that a guide member pivots between a first pivot position and a second pivot position.

Sheet conveyance apparatus

A discharge unit discharges a sheet having an image thereon. A switching unit switches between stacking the sheet discharged from the discharge unit on a stacking unit or conveying the sheet from the discharge unit toward an image reading apparatus. A conveyance unit conveys the sheet conveyed via the switching unit to a reading unit. A cooling unit cools the sheet discharged from the discharge unit or cools the reading unit.

Image forming system and image forming apparatus

A sheet-conveying device includes first, second, and third rotary members, and a switching unit. The first rotary member rotates in one direction to convey, with the second rotary member, a sheet in a first direction and to convey, with the third rotary member, the sheet in a second direction. The switching unit switch from a first to a second state by moving the first rotary member before a trailing end of the first direction conveyed sheet passes through the first and second rotary members. The first state is a state where the second rotary member contacts a first surface of the sheet and the first rotary member contacts a second surface of the sheet. The second state is a state where the first rotary member contacts with the first surface of the sheet and the third rotary member contacts the second surface of the sheet.

Sheet-conveying device, image-forming apparatus, and image-reading apparatus

A sheet conveying apparatus includes first, second, and third rotating members, a switching unit, and a regulating member. The first rotating member rotates in one direction to convey, with the second rotating member, a sheet in a first direction and convey, with the third rotating member, the sheet in a second direction different from the first direction. The switching unit switches the first rotating member between first and second positions. The first position is a position in which the first rotating member coveys a sheet with the second or third rotating member. The second position is a position to which the first rotating member is retracted from the first position. Where the first rotating member moves from the first position, the regulating member regulates the sheet position so that a sheet rear end held by the second and third rotating members is positioned above a first rotating member moving trajectory.

Sheet conveying apparatus, image forming apparatus, and image reading apparatus

An image forming apparatus includes an image forming portion, a fixing portion, a reversing portion, a re-feeding path, a detecting portion, a first feeding path, a second feeding path, an air flow generating portion, and a flow path forming portion. The flow path forming portion forms a flow path along which air flow is passed through between a recording material passing through the second feeding path and a constituent portion constituting the second feeding path on a side toward the detecting portion and guides the recording material passing through the second feeding path, when the recording material passes through the second feeding path.

Image forming apparatus

A sheet conveying apparatus includes a first rotating member, a second rotating member to convey a sheet in a first direction upon the first rotating member rotating, a third rotating member to convey the sheet in a second direction upon the first rotating member rotating, and a switching unit. The switching unit switches a position of the first rotating member between a first position at which the first and second or first and third rotating members convey the sheet, and a second position at which the first rotating member is retracted. Before a rear end of the sheet has been conveyed by the first rotating member and the second rotating member, the switching unit moves the first rotating member from the first position towards the second position. The switching unit stops a movement of the first rotating member at a position between the first position and the second position.

Sheet conveying apparatus, image forming apparatus, and image reading apparatus to change the sheet conveying direction by moving a rotating member that conveys the sheet

An image forming apparatus includes a discharging portion to discharge a sheet on which the image has been formed, an image reading portion to read the image formed on the sheet, and a switching portion to switch between a first position where the discharged sheet is conveyed to a supporting portion and a second position where the discharged sheet is conveyed toward the image reading portion. The sheet conveyed toward the image reading portion is conveyed to a reading position after conveyance of the sheet by the discharging portion is finished, and the control portion conveys the sheet at a first conveyance speed in a period before a trailing end of the sheet is released from the discharging portion and conveys the sheet at a second conveyance speed different from the first conveyance speed in a period after the trailing end of the sheet is released from the discharging portion.

An image forming apparatus including an image forming unit, first and second discharging portions, first and second supporting portions, an image reading portion, and first and second switching portions is provided. The first switching portion switches between causing a sheet bearing an image formed by the image forming unit to be discharged to the first supporting portion by the first discharging portion and causing the sheet to be conveyed toward the image reading portion that reads the image. The second switching portion switches between causing the sheet whose image has been read to be conveyed toward the second discharging portion that discharges the sheet whose image has been read to the second supporting portion and causing the sheet to be conveyed toward the image forming unit. The image reading portion is disposed above the first discharging portion and further on the inside of the apparatus than the second switching portion.

A reversing unit has a drive roller, a discharge roller for forming a first nip portion Ntogether with the drive roller, and a conveyance roller for forming a second nip portion together with the drive roller. The reversing unit moves any one of the rollers and nips a sheet at a plurality of nip portions when moving the roller to switch the nip portion for nipping a sheet from a first nip portion to a second nip portion and change the sheet conveyance direction from a first direction to a second direction.

Sheet conveying apparatus and image forming apparatus

A sheet conveyance device includes first, second, and third rotating members and a switching unit. The first rotating member rotates in one direction. The second rotating member conveys a sheet in a first direction with the first rotating member rotating. The third rotating member conveys the sheet in a second direction, different from the first direction, in conjunction with the first rotating member rotating. The switching unit switches from a first state where the second rotating member contacts a sheet first surface and the first rotating member contacts a sheet second surface to a second state in which the first rotating member contacts the first surface of the sheet and the third rotating member contacts the sheet second surface by moving the second rotating member before a trailing edge of the sheet conveyed in the first direction is conveyed by the first rotating member and the second rotating member.

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

An image forming system includes an image forming apparatus, an image reading apparatus, and a connecting conveyance path that branches from a second main conveyance path of the image reading apparatus and joins a first sub conveyance path of the image forming apparatus, and is configured to convey an original from the image reading apparatus to the image forming apparatus. The system controls conveyance of the original so that a first side becomes a side that faces an image forming unit if the first side of the original is designated as the image formation side or so that a second side becomes the side that faces the image forming unit if the second side of the original is designated as the image formation side.

An inclined flange roller is located outward of an end portion of a tension roller in the belt width direction. The inclined flange roller includes a flange surface capable of being in contact with the edge portion of a belt in a region in which the belt is wound around the tension roller and a roller surface capable of being in contact with an inner peripheral surface of the belt between the flange surface and an end portion of the tension roller in the belt width direction.

Belt conveyor unit and image forming apparatus

An image forming apparatus including: a sheet feeding portion configured to feed a sheet to a sheet conveying path; an image forming portion configured to form an image on the sheet; a sheet discharging portion configured to discharge the sheet; a sheet re-conveying path configured to guide the sheet on which the image has been formed to the sheet conveying path again; an original feeding portion configured to feed an original; an original feeding path configured to guide the original to the sheet re-conveying path; an image reading portion configured to read an image of the original; an original discharging path configured to guide the original guided along the sheet re-conveying path to an original discharging portion; and an original conveying portion configured to convey the original which has been guided along the original feeding path toward the original discharging path.

A belt feeding unit includes a rotatable belt, a first stretching roller for stretching the belt, and a second stretching roller including a stretching portion for stretching the belt. A first member is provided at one end portion of the stretching portion with respect to a widthwise direction of the belt and perpendicular to a movement direction of the belt. The first member is movable relative to the stretching portion to change a position of one end of the stretching portion at the one end portion. In addition, a second member is provided at the other end portion of the stretching portion and is movable relative to the stretching portion to change a position of the other end of the stretching portion at the other end portion. When the belt shifts in the widthwise direction to contact the first member, the first member moves relative to the stretching portion to incline the stretching portion relative to the first stretching roller, and the second member does not prevent movement of the stretching portion by the first member.

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Mishima, Japan

Atsushi Ogata