The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2001
Filed:
Aug. 03, 1999
Takashi Fuchiwaki, Ebina, JP;
Akihisa Maruyama, Ebina, JP;
Yasutomo Ishii, Ebina, JP;
Katsuya Takenouchi, Ebina, JP;
Keitaro Sonoguchi, Ebina, JP;
Yasutaka Naito, Ebina, JP;
Yasuyuki Kobayashi, Ebina, JP;
Yoko Shimomura, Ebina, JP;
Kazuhiko Miyazato, Ebina, JP;
Shigehiko Haseba, Ebina, JP;
Minoru Ueki, Ebina, JP;
Satoshi Matsuzaka, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
Image deterioration (so-called oil ghost) due to local transfer of a release agent from a fuser to an intermediate transfer body is effectively prevented. The fuser has a pair of fixing members, a release supply mechanism, an interlocking mechanism, and an interlocking control mechanism. The fixing members are in contact with each other and roll over each other, thus nipping a sheet. The fixing members fix unfixed images on the sheet. The release agent supply mechanism is mounted to at least the fixing member located on the surface of the sheet carrying an unfixed image. The release agent supply mechanism supplies a release agent to this fixing member at a constant rate. The interlocking mechanism interlocks the fixing members and release agent supply mechanism with each other such that the fixing members are kept in contact with each other and roll over each other and that a release agent is supplied to the fixing members. When duplex mode is selected, the interlocking control mechanism controls the interlocking time of the interlocking mechanism according to the length of the path of the sheet going to the nip between the fixing members.