Canon Kabushiki Kaisha

Jumpei Nitta

Tomoya Tateishi

Kohei Koguchi

Shuma Hiasa

Osamu Sasaoka

Akinori Mitsumata

Kazuhiro Hosohara

Tatsuo Nishiyama

Fuyuto Yamashita

Tachio Kawai

Atsushi Murakami

An image forming apparatus includes a first toner cartridge to store first toner and is movable to a first attached position and a first retracted position with respect to a storage frame, and a second toner cartridge to store second toner and is movable to a second attached position and a second retracted position with respect to a second storage frame. A movable first support member supports the first toner cartridge, and a movable second support member supports the second toner cartridge. In a case where a length by which the first toner cartridge at the first retracted position projects from an opening in a body frame is a first length and a length by which the second toner cartridge at the second retracted position projects from the opening is a second length, the first length is larger than the second length.

Image forming apparatus having first and second retractable toner cartridges

An image forming apparatus includes a toner cartridge which is attachable to and detachable from a rotary through the opening of the body frame and is movable to an attached position where a discharge opening faces an inlet opening such that a toner storage portion and a developing storage portion communicate with each other via the discharge opening and the inlet opening and a retracted position where the toner cartridge is retracted from the attached position, with respect to a storage frame. In addition, one or more motors (i) move the toner cartridge from the attached position to the retracted position and (ii) rotate the rotary with the toner cartridge about a rotation axis between (ii-1) a developing posture in which a developing roller faces a photosensitive drum and (ii-2) a replacement posture in which detachment of the toner cartridge from the rotary is allowed. The toner cartridge is configured such that at least part of the toner cartridge projects outside the body frame in a state in which the toner cartridge is at the retracted position.

Image forming apparatus

An image forming apparatus includes a rotary including a developing roller, and a storage frame including a storage chamber to store toner to be supplied to the developing roller and an inlet opening communicating with the storage portion. In addition, a body frame has an opening and accommodates the rotary, and a toner cartridge includes a toner frame including a toner storage hollow storing the toner and a discharge opening communicating with the toner storage hollow and is attachable to the rotary through the opening. The toner is supplied from the toner storage hollow to the storage chamber in a state in which the toner cartridge is at the attached position. A moving assembly driven by a driver moves the moving assembly to move the toner cartridge from the attached position to a retracted position and moves the toner cartridge from the retracted position to the attached position.

Image forming apparatus having a rotary and detachable toner cartridges

A sheet feeding apparatus includes a first supporting portion movable between a closed position and an open position supporting a sheet, an interlocking portion to move the first supporting portion from the closed position to the open position when a cover is opened, and a second supporting portion. A feed portion feeds a sheet supported by the first and second supporting portions in a sheet feeding direction. A moving angle of the first supporting portion moving from the closed position to the open position is smaller than a moving angle of the cover moving from the closed position to the open position, and the first supporting portion includes an upstream end portion and a downstream end portion. In a state where the cover and first supporting portion are open, the upstream end portion is further from an exterior surface of the cover than the downstream end portion.

Sheet feeding apparatus and image forming apparatus

An image forming apparatus includes a rotatable rotary including a developing roller and a storage frame including a storage portion to store toner, a body frame with an opening, a toner cartridge which is attachable to and detachable from the rotary through the opening, which is movable to an attached position and a retracted position, a moving device to move the toner cartridge from the attached position to the retracted position, and an opening/closing member provided to be movable between a closed position and an open position. The opening/closing member moves from the closed position to the open position in an interconnected manner with movement of the toner cartridge from the attached position to the retracted position by the moving device.

Image forming apparatus having detachable toner cartridges

A sheet feeding device includes a door movable between an opened position and a closed position relative to an apparatus body, a stacking portion for a sheet, a cover portion configured to be situated at a first position when the door is situated at the opened position and to be situated at a second position when the door is situated at the closed position, and a moving unit including a feeding roller and a moving member supporting the feeding roller. The moving member is movable with respect to the stacking portion in a first direction in which the feeding roller comes close to the stacking portion and in a second direction which is opposite to the first direction. In a state in which the cover portion is situated at the first position, the moving unit is situated between the cover portion and the door.

Sheet feeding device and image forming apparatus

An image forming apparatus includes a first roller, a second roller arranged downstream of the first roller in a sheet conveyance direction, the second roller including a rotation shaft and a roller body supported by the rotation shaft, a third roller arranged downstream of the second roller in the sheet conveyance direction, a first support member configured to rotatably support the first roller, a second support member configured to rotatably support the third roller, and a bearing member configured to rotatably support an end portion of the rotation shaft. The bearing member includes a first positioning portion configured to position an end portion of the first support member and a second positioning portion configured to position an end portion of the second support member.

An image forming apparatus includes a drive roller configured to be rotated by a drive source, a first rotation member configured to be driven to rotate by the drive roller, and a second rotation member configured to be driven to rotate by the drive roller. The drive roller, the first rotation member, and the second rotation member are configured to convey a sheet in a state where the sheet is present at a first nip portion and a second nip portion at the same time.

Image forming apparatus having duplex driven roller unit

A sheet feeding apparatus includes a sheet supporting portion configured to support a sheet, a feed rotary member configured to feed the sheet supported by the sheet supporting portion, a curved conveyance path through which the sheet fed by the feed rotary member passes and which is curved upward, an upper conveyance path disposed above the sheet supporting portion so as to pass through a sheet and configured to join with the curved conveyance path, and a driven rotary member disposed inside of the curved conveyance path in a curved direction thereof and driven to rotate by the sheet passing though the curved conveyance path.

A sheet feeding apparatus includes a stacking member having a separation unit and an opening portion disposed upstream from the separation unit, a feeding member, and a moving device that includes a slope portion having a slope along which sheets are guided toward the separation unit. The moving device moves the stacking member between a first position where the feeding member and sheets stacked on the stacking member are in contact with each other, and a second position where the feeding member and the sheets are not in contact with each other. When the stacking member is at the first position, the slope portion is disposed at a position lower than the separation unit in a vertical direction. When the stacking member is at the second position, the slope portion is disposed to protrude via the opening portion to be higher than a stacking surface of the stacking member.

A sheet feeding device for feeding a sheet includes a support unit, an open-close member rotatably supported between open and closed positions, a slide member supported in a slidably movable manner and including a rotation shaft portion, and a regulation member supported by the slide member. The open-close member supports the sheet in the open position with the support unit. The regulation member regulates a position of the sheet supported by the support unit or the sheet supported by the support unit and the open-close member. The support unit includes a guide portion that movably guides the rotation shaft portion. If the open-close member is rotated from the open position toward the closed position in a state in which the open-close member is in contact with the slide member, the slide member rotates by following movement of the open-close member with respect to the guide member.

A sheet feeding apparatus includes a body portion with a supporting portion to support a sheet and a feed portion to feed the sheet, a pivoting portion arranged upstream in a sheet feeding direction of the supporting portion, and a slide portion supported slidably on the pivoting portion. A first regulating portion abuts against the slide portion and regulates the slide portion from moving downstream in the sheet feeding direction, and a second regulating portion regulates a position of the sheet supported on the supporting portion. A guide portion is formed across the supporting portion and the slide portion and guides the second regulating portion between the supporting portion and the slide portion along the sheet feeding direction, with the second regulating portion moving on the supporting portion by being guided by the guide portion in a state where the second regulating portion is separated from the slide portion.

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Kanagawa, Japan

Jumpei Nitta