Minolta Camera Kabushiki Kaisha

Powdertech Co., Ltd.

Etsuaki Urano

Ichiro Demizu

Yuji Sato

Toshio Honjo

Sanji Inagaki

Yoshihiro Hattori

Hiroshi Fukao

Yukio Tanigami

Tetsuya Yamada

Yuji Shintani

Moriyoshi Matsushiro

Shinobu Nakasawa

Toshiyuki Fukumoto

Osamu Doi

Kazuhiro Itadaki

Miyoko Ito

Nobutaka Torii

This invention relates to a carrier for developing electrostatic latent images comprising;

Carrier for developing electrostatic latent image

A fixing roller of the present invention comprising at least an electrically conductive core member and a PFA dispersion layer formed from a polytetrafluoro ethylene perfluoro alkoxy ethylene co-polymer (PFA resin) with carbon black or like conductive material dispersed therein by means of a dispersing agent. A roller of this construction effectively prevents triboelectrically-induced offset caused by the electrostatic attraction of the toner by a surface charge on the outer peripheral surface of the roller. Since the release properties of said roller are superior, offset caused by thermal adhesion of the toner to the roller is also effectively prevented.

Fixing roller and its manufacturing process

A heat fixing unit in an electrophotographic copying apparatus is disclosed. The heat fixing unit comprises a heat fixing roller with a heater, a pressure roller with a plurality of fibers, and driven ring components disposed on the ends of the pressure roller for adjusting the contact amount between the heat fixing roller and the pressure roller. The heat fixing unit offers a less warming up time and a better paper delivery performance, and requires less material cost. The heat fixing unit in an electrophotographic copying apparatus may employ a fixed type or a rotary type curing unit for raising the plurality of fibers.

Heat fixing unit in an electrophotographic copying apparatus

Growing community of inventors

Toyokawa, Japan

Etsuaki Urano