Canon Kabushiki Kaisha

Mitsubishi Denki Kabushiki Kaisha

Kenji Matsuda

Ken Kikuchi

Masao Uyama

Akiyoshi Fujita

Jun Miyamoto

Hidenori Ishioka

Hiroyuki Umemura

Jun Miyazaki

Yoshiya Nomura

Hiroaki Miyake

Katsuyuki Aoki

Hideshi Kawaguchi

Tetsuji Okada

Yoshinori Sugiura

Nobuharu Hoshi

Hironobu Isobe

Minoru Matsuguma

Masaki Ojima

Hideki Matsumoto

Kouji Hashimoto

Masanori Hara

Sakuo Sugawara

Katsuhiro Kojima

Tadashi Horikawa

Hisayoshi Kojima

Yoshiro Tsuchiya

Kenji Togashi

Takashi Yahagi

Kazuaki Isono

Atsushi Numagami

Teruhiko Sasaki

Minoru Sato

Yasuyuki Ishii

Akira Higeta

Hitoshi Iijima

Kouji Miura

Kazuo Shishido

Ryoji Kusudo

Hitoshi Murao

Yasuo Fujiwara

Fumio Matsuoka

Chitose Tenpaku

Seiji Kubo

Tomofumi Tezuka

Satoshi Sugita

Norio Takami

Ryuji Araki

Takashi Arai

Isao Arai

Tomofumi Tezuda

A cartridge includes: a second conveyance roller that forms a nip with a first conveyance roller; a storage portion that stores foreign matter; and a contact member that comes into contact with the second conveyance roller for restricting leakage of the foreign matter. An apparatus main body includes a biasing member that biases the second conveyance roller toward the first conveyance roller. The second conveyance roller is at a first position at which the nip is formed with the first conveyance roller by a biasing force of the biasing member when the cartridge is attached to the apparatus main body, and is at a second position when the cartridge is detached from the apparatus main body. The contact member is in contact with the second conveyance roller when the second conveyance roller is at the first position and when the second conveyance roller is at the second position.

Image forming apparatus and cartridge

A cartridge includes a drum unit and a developing unit. The developing unit is mountable in a space between first and second walls of the drum unit. While the developing unit is being mounted to the drum unit, in a posture in which the drum unit is mounted in the main assembly, the handle portion is moved downward in a direction of gravity and the developing unit is rotated so that the developing roller is moved closer to the photosensitive drum. In a state in which the developing unit is mounted to the drum unit, an urged portion of the developing unit is urged by an urging portion of the drum unit so that the developing roller and the photosensitive drum are in contact with each other.

Photosensitive member cartridge and process cartridge

A photosensitive member unit includes a photosensitive member, a transfer roller, a mounting portion capable of mounting a development unit including a development roller, a first gear and a second gear each provided at one end of the photosensitive member in an axial direction of the photosensitive member, and a third gear provided at one end of the transfer roller in an axial direction of the photosensitive member and configured to engage with the second gear. The first gear, the second gear, and the third gear are helical gears. A direction in which helical teeth of the first gear are inclined is opposite to a direction in which helical teeth of the second gear are inclined, and the direction in which the helical teeth of the first gear are inclined matches a direction in which helical teeth of the third gear are inclined.

Photosensitive member unit and development unit

A photosensitive member cartridge detachably mountable to a main assembly of an image forming apparatus for forming an image, includes a frame; a photosensitive drum on which and which is provided in the frame; a transfer member for transferring an image formed on the drum onto the sheet; a mounting portion for detachably mounting a developing cartridge including a developer carrying member onto the drum and a memory for storing information; a first electrical contact provided on the frame and electrically connectable with a main assembly electrical contact provided in the main assembly when the cartridge is mounted to the main assembly; and a second electrical contact provided on the frame for electrically connecting the memory and the first electrical contact portion with each other when the developing cartridge is mounted to the mounting portion.

An optical component includes a skeleton structural portion, and an optical characteristic portion combined with the skeleton structural portion, made of a resin material and having a predetermined optical characteristics. The skeleton structural portion defines a plurality of regularly disposed openings and the resin material of the optical characteristic portion fits into the openings such that the skeleton structural portion is combined with the optical characteristic portion through the openings.

Manufacturing method of optical component, optical component, lens barrel, optical element holder, and optical instrument

Growing community of inventors

Numazu, Japan

Kenji Matsuda