Brother Kogyo Kabushiki-kaisha

Tsubasa Kiriyama

Nao Itabashi

Hiroki Mori

Atsushi Fukaya

Naoya Kamimura

Keita Shimizu

Yuwen Wang

Masaaki Furukawa

Kazutoshi Nakamura

Kazuma Hinoue

Kenta Tosuji

Ryosuke Hayashi

Misato Osuka

Go Iwasa

A drum cartridge includes: a photosensitive drum; a drum frame; a drum coupling; and an electrical contact surface. The photosensitive drum is rotatable about an axis extending in a first direction. The drum frame has one end portion in a second direction at which the photosensitive drum is positioned. The drum coupling is rotatable together with the photosensitive drum. The drum coupling is positioned at an outer surface of one side in the first direction of the drum frame. The electrical contact surface is positioned closer to another side in the second direction of the drum frame than the drum coupling is to the another side in the second direction of the drum frame.

Drum cartridge having electrical contact surface positioned at outer surface of drum frame

An image forming apparatus includes a main housing, a drawer, and a cartridge. The drawer is movable between an inside position inside the main housing and an outside position outside the main housing. The cartridge is installable into and removable from the drawer. The cartridge includes a photosensitive drum configured to rotate about a drum axis. The drawer comprises a lock member movable between a lock position in which the drawer is locked to the main housing, and an unlock position in which the drawer is unlocked from the main housing. The cartridge installed in the drawer is rotatable about the drum axis between a first position and a second position. The lock member is positioned in the lock position when the cartridge is positioned in the first position, and positioned in the unlock position when the cartridge is positioned in the second position.

Image forming apparatus

A toner cartridge includes a casing, a developing roller, a holder, a toner memory, an electrical contact and a wiring. The holder is positioned at an outer surface of one side in a first direction of the casing. The electric contact surface is positioned at an outer surface of one side in a second direction of the holder. The second direction crosses the electric contact surface. The electrical contact is positioned on an outer surface of another side in the second direction of the holder. The wiring electrically connects the electrical contact and the electric contact surface. The electric contact surface includes a first electric contact surface and a second electric contact surface. The first electric contact surface electrically is connected to the electrical contact through the wiring. The second electric contact surface electrically is connected to the toner memory.

Toner cartridge having toner memory and attachable to drum cartridge having drum memory

A photosensitive drum rotates about a first axis extending in a first direction. A photosensitive drum is located at one end portion of a housing in a second direction. A cleaning roller cleans a surface of the photosensitive drum. The cleaning roller rotates about a second axis extending in the first direction. A cleaning electrode is electrically connected to the cleaning roller. The cleaning electrode is located at an outer surface of the housing in the first direction. The cleaning electrode is located at a tip end of the one end portion of the housing in the second direction. The cleaning electrode includes a contact surface and a guide surface. The contact surface contacts an electrical contact to which a voltage is supplied. The contact surface is perpendicular to the first direction. The guide surface guides the electrical contact to the contact surface when the drum cartridge is mounted.

Drum cartridge and image forming apparatus

A developing cartridge includes a developing roller rotatable about a first axis extending in an axial direction of the developing roller, a casing having an outer surface positioned at one end of the casing in the axial direction, an electrode electrically connected to the developing roller and positioned at the outer surface, the electrode extending in the axial direction, a gear, a protrusion, and an adapter having an electric conductivity and detachably attachable to the electrode, the adapter being electrically connected to the electrode in a state where the adapter is attached to the electrode. A total length of the electrode and the adapter in the axial direction in the state where the adapter is attached to the electrode is greater than a length in the axial direction of the electrode in a state where the adapter is detached from the electrode.

Developing cartridge including electrode to which adapter is detachably attachable

Growing community of inventors

Nagoya, Japan

Tsubasa Kiriyama