Canon Kabushiki Kaisha

Takashi Kuwata

Masayoshi Fukatsu

Yasuyoshi Hayakawa

Kenichiro Isobe

Junichi Sekiyama

Makoto Izumi

Hironobu Ata

Yasuhiro Uchida

Kenji Abe

Tsukasa Abe

Motoyasu Muramatsu

Hideki Ohta

Youhei Suzuki

Takamichi Matsuo

Kaoru Sato

Shinichi Ueda

Fumihiko Yamaya

Yuzo Isoda

Mitsuyoshi Arakawa

Atsushi Ogata

Keita Nakajima

Minoru Kawanishi

Masanobu Kanoto

Jun Saito

Masao Amano

Takehito Osada

Kazuhide Kudo

Taisuke Hyodo

Takuro Mita

Harukazu Sekiya

Toshiaki Sako

Jun-ichi Sekiyama

Tsutomu Ishida

Masaki Seto

Koji Kawamura

Akira Matsushima

Shoichi Koyama

Satoshi Tsuda

Yasuhiko Fuse

Kiyoharu Yoshioka

Joji Goto

Seiji Inada

Masao Umezawa

Yoshiteru Kaida

Naonori Kayama

Ko Katahira

Mitsuhide Takamura

Kazuhide Okuno

Tomonari Inoue

An image forming apparatus includes a cartridge, including a photosensitive drum and a cleaning member, and an apparatus main body to and from which the cartridge and a toner container are independently attached and detached The apparatus main body includes a toner conveying apparatus receive toner removed from the cartridge and convey the removed toner to the toner container. The toner conveying apparatus includes a first conveying portion to convey the removed toner received from the cartridge toward the toner container, and a second conveying portion to convey the removed toner conveyed by the first conveying portion to the toner container.

Toner conveying apparatus having toner conveying paths and image forming apparatus

A toner conveying apparatus conveying toner used for image forming includes a first conveying portion to convey the toner and having a first screw and a first conveying passage forming member that forms a first conveying space, and a second conveying portion to convey upward the toner and including a second screw and a second conveying passage forming member that forms a second conveying space. The second conveying passage forming member has a connecting port connected to the first conveying passage forming member. The second screw overlaps with the first screw viewed in a direction of a rotational axial line of the first rotation shaft. A cross-sectional area of the first conveying space orthogonal to the direction of the rotation axial line in a second region is smaller than the cross-sectional area of the first conveying space orthogonal to the direction of the rotational axial line in a first region.

Toner conveying apparatus having orthogonal toner conveying paths and image forming apparatus

A toner conveying apparatus includes a frame body, a conveyance member, a light transmission portion, a light emission portion, a light reception portion, and a rubbing member. The frame body forms a conveyance passage surrounded by a wall portion and is provided with a reception inlet for receiving toner from outside. The conveyance member is provided in the conveyance passage and rotates around a first rotation axis to convey the toner. The light transmission portion that is provided in the wall portion and has translucency. The light emission portion emits light toward an inside of the conveyance passage through the light transmission portion. The light reception portion receives the light emitted from the light emission portion through the light transmission portion. The rubbing member rubs on the light transmission portion by being rotated around a second rotation axis extending in a direction crossing the first rotation axis.

Toner conveying apparatus having a light transmission portion

An image forming apparatus includes a feeding unit, a detection unit provided downstream of the feeding unit, a measurement unit that measures a measured time from the start of conveyance of a recording material to the detection of the recording material, and a determination unit that performs renewal determination for determining whether the feeding unit has been replaced with a new feeding unit. Thus, replacement of the feeding unit with a new feeding unit can automatically be detected.

Image forming apparatus

An image forming apparatus includes a cartridge, a first door, and a second door. The first door is movable between a first closed position and a first open position to permit dismounting the cartridge from the main. The second door is movable, independently of the first door, between a second closed position for closing the main assembly and a second opened position for uncovering the first door and for opening the main assembly. The second door is provided with a recess. When the first door is in the first open position, the recess of the second door is capable of accommodating at least a part of the first door. The cartridge is capable of being inserted into the main assembly while sliding on the second door and then on the first door.

Image forming apparatus with a first door and second door for accessing a cartridge

Provided is a one-way clutch in which a rotating direction of a first rotating member with respect to a second rotating member is switched. The first rotating member includes a recessed portion that receives a planetary gear and, in an outer circumferential portion thereof, an engaging portion that engages with the planetary gear, whereby relative rotation of the planetary gear and the first and second rotating members is switched to rotatable and unrotatable. When the first rotating member is relatively rotating with respect to the second rotating member, the planetary gear meshes with an internal gear of the second rotating member, and the position of the planetary gear is thereby restricted.

One-way clutch

An image forming apparatus comprises a light-emission unit, a reflecting member, a light-receiving unit, a detection unit, a ventilation unit configured to send air to the reflecting member, and a control unit. The control unit adjusts at least one of an operation duration and an airflow rate of the ventilation unit, in accordance with a detection signal outputted by the light-receiving unit when a sheet is not at a position where light crosses a conveyance path.

Image forming apparatus that has sheet sensor

The present invention provides an image forming apparatus that reduces image artifacts caused by the back tension of a separating unit. A control unit decreases the number of rotations (the rotational speed) of a resist roller pair after the leading edge of a sheet reaches a transfer position.

A sheet stacking apparatus includes a sheet stacking portion to be mounted into and drawn out of a mounting portion and provided with a side plate including a grip portion by which the sheet stacking portion can be drawn out in the draw-out direction. The sheet stacking portion is supported to be slidable in a draw-out direction by a rail, and the rail is supported to be slidable in the draw-out direction by a rail supporting portion provided in the mounting portion. A rotator is provided on either the rail supporting portion or the rail and disposed in contact with the other of the rail supporting portion and the rail. The rail, the rail supporting portion and the rotator are disposed on one side in the width direction of the sheet stacking portion, and the grip portion is disposed on the other side in the width direction.

Sheet stacking apparatus and image forming apparatus

A feeding apparatus includes a stacking member provided to a feeding cassette, a feeding member, a contact portion provided on a regulating member provided on the feeding cassette, a movement unit, and a switching unit. The movement unit raises the feeding member when the feeding cassette is pulled out and lowers the feeding member when the feeding cassette is inserted. The switching unit switches a positional relationship between the feeding and stacking member. After the feeding member is lowered and before the feeding member performs a sheet feeding operation, the switching unit switches the relationship to the second positional relationship from the first. When a stacked sheet amount is equal to or more than a predetermined amount, the contact portion is disposed in contact with the stacked sheets and when the amount is smaller than the predetermined amount, the contact portion is disposed not in contact with the stacked sheets.

Feeding apparatus and image forming apparatus

An image forming apparatus includes a feeder unit, a separating unit, a conveying unit disposed downstream of the separating unit in a sheet feeding direction, an image forming unit disposed downstream of the conveying unit in the sheet feeding direction, a drive unit, and a control unit. The feeder unit feeds a sheet. The separating unit separates sheets fed by the feeder unit one by one. The conveying unit conveys the sheet. The image forming unit forms, while the sheet is being conveyed, an image on the sheet. The drive unit drives the conveying unit. The control unit controls the drive unit. After the conveyed sheet reaches the image forming unit, the control unit reduces a conveyance speed of the sheet conveyed by the conveying unit.

An image forming apparatus includes a sheet feed unit which feeds a sheet to an image forming unit forming an image on the sheet, a re-transport roller which reverses the sheet with a toner image fixed on the sheet and re-transports the sheet to the image forming unit, and a control unit which controls a sheet feed operation of the sheet feed unit for feeding the sheet. As the temperature of the re-transport roller sensed by the temperature sensing unit is decreased, the control unit retards the timing at which the sheet feed unit starts the sheet feed operation when a duplex image formation in which the image is formed on both sides of the sheet is performed after a one-side image formation is completed.

Growing community of inventors

Suntou-gun, Japan

Takashi Kuwata