Canon Kabushiki Kaisha

Tomooku Koyama

Wataru Uchida

Ken Murooka

Jun Agata

Daisuke Takamura

Yohei Suzuki

Masatoshi Yoshida

Hiroharu Tsuji

Shinya Noda

Chikara Imaizumi

Satoshi Murasaki

Yasuhiko Fuse

Taisuke Minagawa

Yoji Misao

Kunihiro Niwa

Kiyoshi Furuta

Tomoki Katafuchi

Koichi Sekimizu

Tomonari Inoue

Masayoshi Fukatsu

Satoru Izawa

Takahiro Uchiyama

Jun Asami

Toshiya Kaino

Junichi Sekiyama

Yasuhiro Nakahara

Mitsuhiro Ohta

Junichi Ochi

Taro Ishifune

Ryo Iwasawa

Naoyuki Maeda

Takuya Keino

Takayuki Mizuta

Kenichirou Isobe

An image forming apparatus to form an image on a recording material includes an apparatus main body having a first end provided with an opening and having a second end, a fixing device to heat the recording material, an opening and closing member, a drawer unit having a first photosensitive drum, and a transfer device. When being moved from a first inner position inside the apparatus main body to a first outer position outside the apparatus main body through the main body opening, the drawer unit is to be moved in a moving direction intersecting with a rotation axis of the first photosensitive drum, and is to be moved away from the second end. When being moved from a second inner position inside the apparatus main body to a second outer position outside the apparatus main body, the transfer device is moved away from the second end.

Image forming apparatus

An image forming apparatus includes an apparatus main body, a drawer unit, and a transfer device a including a belt. When image formation on a recording material is performed, the drawer unit is at a first apparatus main body inner position and the transfer device is at a second apparatus main body inner position. In this drawer unit state, (a) a part of the transfer device is disposed downstream of the drawer unit in a moving direction in which the drawer unit moves from the first inner position to a first apparatus main body outer position, and (b) in a vertical direction, an area where the part of the transfer device is positioned overlaps, at least in part, with an area where the drawer unit is positioned. The transfer device includes a cleaning member to clean the belt and is accommodated in the part of the transfer device.

An image forming apparatus includes: a fixing portion for fixing an image formed on a recording material; and a guide member for guiding the recording material. The guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material The guide member is moved when the guide member is pushed by the recording material.

An image forming apparatus includes an apparatus main body, a drawer unit, and a transfer device including a belt. The drawer unit includes a first cartridge, a support member to which the first cartridge is detachably attached, and a first photosensitive drum disposed on the support member or the first cartridge. The drawer unit is moved to a first inner position inside the apparatus main body and to a first outer position outside the apparatus main body. The transfer device is moved to a second inner position inside the apparatus main body and to a second outer position outside the apparatus main body. The belt contacts the first photosensitive drum with the transfer device at the second inner position. The transfer device is moved from the second inner to the second outer position when the drawer unit is moved from the first inner to the first outer position.

Image forming apparatus with a transfer device

An image forming apparatus includes a fixing device to heat a recording material at a use position, an opening and closing member, and a drawer unit. In a state where the fixing device is at the use position, part of the fixing device is located in a space for the drawer unit to pass through when moved from a first inner position to a first outer position so that movement of the drawer unit from the first inner to the first outer position is restricted. The fixing device is retracted from the use position to a retracted position so that the movement of the drawer unit from the first inner to the first outer position is allowed. Part of the fixing device at the retracted position is at a position higher than a position of an upper cover portion of the opening and closing member at a closed position.

A sheet processing apparatus includes a conveyance unit configured to convey a sheet, a stacking portion on which the sheet conveyed by the conveyance unit is stacked, a first regulation member configured to regulate a position of an edge portion, in a conveyance direction, of the sheet stacked on the stacking portion, a second regulation member configured to regulate a position of an edge portion, in a width direction orthogonal to the conveyance direction, of the sheet stacked on the stacking portion, a binding unit supported movably in the conveyance direction and configured to perform a binding process of binding the sheet stacked on the stacking portion, and a moving unit configured to move the second regulation member in the conveyance direction accompanied with a movement, in the conveyance direction, of the binding unit.

Sheet processing apparatus and image forming system

An image forming apparatus includes a fixing portion for fixing an image formed on a recording material, and a guide member for guiding the recording material, wherein the guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material. The fixing portion includes a cylindrical belt and a roller contacting an outer surface of the belt for forming a fixing nip through which the recording material is to be passed, wherein the roller has a shape such that a diameter thereof is increased with a distance thereof toward the end portion with respect to the direction perpendicular to the feeding direction, and the guide member is moved when the guide member is pushed by the recording material.

A sheet discharging apparatus includes a first detecting portion provided in an apparatus body and configured to detect a move of a movable member in a state where a movable tray is at an upper limit position in a moving direction of the movable tray, wherein a detection result of the first detecting portion changes depending on a position of the movable tray in the moving direction. In addition, a second detecting portion detects the position of the movable tray in the moving direction, and a control portion, in a case where the second detecting portion detects that the movable tray is at the upper limit position, determines whether a sheet is present on the movable tray based on the detection result of the first detecting portion. When the second detecting portion does not detect that the movable tray is at the upper limit position, the control portion determines that a sheet is present on the movable tray regardless of the detection result of the first detecting portion.

Sheet discharging apparatus, sheet feeding apparatus and image forming apparatus

An upstream roller pair and a downstream roller pair are disposed on a first conveyance path and configured to perform a reverse conveyance operation on a sheet. The upstream roller pair includes a first roller and a second roller abutting with each other. The downstream roller pair is configured to nip and convey a sheet by a third roller and a fourth roller in a state that areas in a width direction where a plurality of first rotary members contact a first surface of a sheet do not overlap with areas in the width direction where a plurality of second rotary members contact a second surface of a sheet opposite to the first surface.

An image forming apparatus includes: a fixing portion for fixing an image formed on a recording material; and a guide member for guiding the recording material. The guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material. The guide member is moved when the guide member is pushed by the recording material.

Image forming apparatus with guide member movable with repect to direction perpendiclar to recording material surface

An image forming apparatus that forms a toner image on a recording medium includes an image forming unit that forms an unfixed toner image on a recording medium; a fixing unit that heats the recording medium bearing the unfixed toner image and fixes the unfixed toner image onto the recording medium at a nip portion; a heating member and a pressurizing member that touches the heating member and forms the nip portion therebetween; a first blower that blows air to a non-sheet-passing area of a small-size recording medium in the heating member; and a second blower that blows air to a non-sheet-passing area of a small-size recording medium in the pressurizing member. Upon the temperature of the non-sheet-passing area of the heating member exceeding a threshold temperature, the first blower blows without the second blower blowing, then the two blowers start blowing together.

Fixing device having a perforated duct

A sheet discharging apparatus includes an apparatus body, a sheet discharge member provided in the apparatus body, and a movable tray including a sheet supporting surface. A movable member in the movable tray is moved by being pressed by the sheet supported on the sheet supporting surface, and a detecting portion detects a presence of the sheet supported on the sheet supporting surface in response to a position of the movable member. The movable member includes an extension portion extending out of the movable tray toward the apparatus body, and the apparatus body is provided with an opening portion through which the extension portion extends. The opening portion is formed such that the extension portion is movable along a moving direction of the movable tray within the apparatus body, and the detecting portion detects a position of the movable member by detecting the extension portion.

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Suntou-gun, Japan

Tomooku Koyama