Canon Kabushiki Kaisha

Daisuke Aoki

Masashi Tanaka

Atsushi Murakami

Atsuyoshi Abe

Yu Shuhama

Masao Amano

Shigeo Miyabe

Satoshi Nishida

Kazuhisa Kemmochi

Tsutomu Miki

Takahito Ueno

Yoshihiro Ito

Kenichi Ogawa

Yasuhiro Fukase

Eiichiro Kimizuka

Yuko Harada

Akira Oomori

Junya Akatsuka

Takugo Kasaishi

Masanori Maeda

Akira Kato

Naoki Inoue

Yuji Kawaguchi

Motoki Adachi

Tomoya Tateishi

Nobukazu Adachi

Shuhei Kawasaki

Kiyoharu Yoshioka

Atsushi Takasaka

Hiromi Sakurai

Masaki Tanaka

Koji Uchiyama

Takuya Suto

A cut-out is provided in a lower guide so as to permit a return claw to move between a retracted position and a protruded position. Furthermore, an upper surface of the return claw positioned in the protruded position functions as a guide portion that guides an underside of a sheet that has been manually fed.

Sheet feeding apparatus and image forming apparatus

A sheet supporting apparatus includes an apparatus body, a supporting unit being capable of being drawn from and inserted to the apparatus body, and having a supporting member on which a sheet is supported, a conveyance guide disposed on the apparatus body and being capable of moving to a first position at which a sheet conveyance path is constituted, and a second position distant from the first position, and a regulation unit. The regulation unit regulates the conveyance guide positioned at the second position from moving in an upward direction, a downward direction, a drawing direction and an inserting direction of a supporting unit.

Sheet supporting apparatus and image forming apparatus

An image forming apparatus includes a drive unit including a first drive train through which a driving force from the drive source is transmitted to the discharge roller and a second drive train through which a driving force from the drive source is transmitted to the reverse roller, and a switching mechanism, provided on the second drive train, configured to switch a rotating direction of the reverse roller between the forward rotating direction and the reverse rotating direction with the discharge roller rotating in one direction.

Sheet conveying apparatus and image forming apparatus including same

A sheet conveyance apparatus includes an apparatus body, a sheet stacking portion including an engagement portion, provided to be insertable to/removable from the apparatus body and capable of having sheets stacked thereon, and a conveyance guide portion provided to be insertable to/removable from the apparatus body and constituting a sheet conveyance path through which a sheet passes in a state where the conveyance guide portion is mounted to a mounted position in the apparatus body. The conveyance guide portion has an engaged portion that is pressed by the engagement portion accompanying an operation where the sheet stacking portion is inserted to the apparatus body, and moves the conveyance guide portion to the mounted position.

Sheet conveyance apparatus and image forming apparatus

A sheet conveying apparatus includes a restricting portion provided on a second roller side with respect to a sheet conveying path and near a nip portion. This restricting portion is configured such that a first abutment portion is positioned on the second roller side from a straight line connecting a point protruding most to the sheet conveying path of the restricting portion and the nip portion in a state in which a second abutment portion is in contact with a surface of a first sheet as a rotary member rotates in a predetermined direction by the first abutment portion being pushed by the first sheet.

Sheet conveying apparatus and image forming apparatus

If a second detecting unit has detected an upper surface of a stack of sheets without a first detecting unit detecting the upper surface of the stack of sheets when a pickup roller is moved from a moved position to a pickup position, a control unit lifts a stacking plate by a first predetermined amount. If the pickup roller is moved from the moved position to the pickup position without the first detecting unit and the second detecting unit detecting the upper surface of the stack of sheets, the control unit lifts the stacking plate by a second predetermined amount greater than the first predetermined amount.

Sheet feeding device and image forming apparatus

An image forming apparatus heats and fixes a toner image on a recording material, discharges and cools the recording material, and prevents the heated and fixed toner image on the recording material from being melted. The apparatus also has a conveying portion that is prevented from being cooled, so that unevenness of cooling of the toner image is prevented, and the image forming apparatus does not cause any contact mark of the conveying portion.

Image forming apparatus including an air-blowing portion configured to blow air guided to a recording material

According to embodiments, a heating member or a sliding member arranged in contact with the surface of a fusing roller is moved in an intersecting direction with the rotational direction of the fusing roller in a contact state with the heating member or the sliding member so as to prevent a scratch from being generated on the surface of the fusing roller or to repair the scratch.

Image heating apparatus and image heating rotational body to be mounted on the image heating apparatus

A supporting portion is provided to project from an upper surface of a side regulating member which is provided in a sheet feeding cassette which is detachably attached to a color laser beam printer body, and which regulates a position of a sheet in a width direction orthogonal to a sheet feeding direction, and this supporting portion regulates downward deformation of a conveyance guiding member which is positioned above the sheet feeding cassette and which forms a sheet conveying path R which guides the sheet.

Image forming apparatus

The present invention provides a sheet feeder, including: a support member which can be rotated around a pivot at upstream side thereof in a sheet feeding direction and supports sheets; a driving unit rotating the support member upwardly; a feeding portion feeding the sheets; a first detection unit detecting the sheets on the support member at a first detection position above the support member; a second detection unit detecting the sheets on the support member at a second detection position located at upstream of the first detection position and below the first detection position; and a stacking amount determining portion determining a stacking amount of the sheets on the support member, based on a period of time between a time when the second detection unit detects the sheets and a time when the first detection unit detects the sheets while the support member is upwardly rotated by the driving unit.

Sheet feeder and image forming apparatus

An image forming apparatus capable of easily performing jammed sheet recovery in a sheet feeding portion is provided. Upper guide grooves that guide attachment and detachment of a conveyance guide member and lower guide grooves that guide attachment and detachment of a sheet feeding cassette are formed in supporting plates that are provided in attachment and detachment directions in an apparatus body to face each other. When jamming occurs, a space near the sheet feeding portion is secured by extracting the conveyance guide member from the apparatus body.

An image forming apparatus includes an image bearing member for bearing an electrostatic image; a rotatable supporting member swingably supporting the rotatable supporting member, the rotatable supporting member being provided with a first gear portion and being rotatable while carrying a plurality of developing devices for developing the electrostatic image with toner; a drive transmission device for transmitting a rotational force to the rotatable supporting member, the drive transmission device being provided with a second gear portion engaged with first gear portion at an engagement position; and an opposing portion provided opposed to the rotatable supporting member with a gap therebetween which is smaller than an amount of engagement between the first gear portion and the second gear portion.

Image forming apparatus with device for preventing gear disengagement

An image forming apparatus includes an image bearing member on which an electrostatic image is to be formed; a rotatable supporting member, configured to support a developing device for developing the electrostatic image and configured to rotationally move the developing device toward a developing position, provided movably in a rotational axis direction with respect to a main assembly of the image forming apparatus; an urging member for urging the rotatable supporting member in the rotational axis direction. In addition, a regulating portion regulates a position of the rotatable supporting member, with respect to the rotational axis direction, urged by the urging member. The rotatable supporting member includes a first rotatable member provided movably in the rotational axis direction at one end side of the rotatable supporting member with respect to the rotational axis direction, and a second rotatable member provided movably in the rotational axis direction at the other end side of the rotatable supporting member. The urging member urges the first rotatable member and the second rotatable member apart.

Growing community of inventors

Numazu, Japan

Daisuke Aoki