Other

Matsushita Electric Industrial Co., Ltd.

Takumi Kitano

Hiroyuki Suzuki

Kazumasa Hayashi

Akinori Toyoda

Noriyuki Tajima

Shigemitsu Tani

Keizou Takeuchi

Hiroshi Komakine

Yoshihiro Nakayama

Michihiro Sima

An oil application roller capable of preventing an oil leak when the roller is left in the state where the rotation axis thereof runs vertically and also capable of preventing an oil escape from the roller in a fixing device. The oil application roller ( ) includes a seal ring ( ) at respective end portions of the roller ( ). The seal ring ( ) includes a vent hole ( ) extending from an end face of the roller ( ) to the outside of the seal ring ( ), and the cross-sectional area of the vent hole is not less than 0.01 mm and not more than 1 mm .

Oil coating roller, seal ring used for the roller, and fixing device using the seal ring

In order to provide a developing apparatus in which the toner thin layer regulating capability and the toner charging capability can be enhanced by a developer regulating member of a simple structure, a development roller can be rotated with a small driving force, toner is prevented from adhering and development can be performed with high accuracy, the developer regulating member of the developing apparatus is provided with a surface constituting a step in a direction vertical to the direction of the rotation axis of the development roller, a pressed surface that is pressed against the development roller in the downstream side of the step and an opposed surface formed so as to be opposed to the development roller with a predetermined space therebetween in the upstream side of the step.

Developing apparatus with a developing regulating member

Growing community of inventors

Utsunomiya, Japan

Takumi Kitano