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:
Mar. 24, 1998
Filed:
Dec. 27, 1994
Hiroyuki Yamasaki, Amagasaki, JP;
Masahide Ueda, Takatsuki, JP;
Yoshihisa Terasaka, Suita, JP;
Eiichi Sano, Takatsuki, JP;
Masahiko Matsuura, Takatsuki, JP;
Atsuto Hirai, Ikoma, JP;
Tomoo Izumi, Amagasaki, JP;
Masami Yamada, Osaka, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
An image forming apparatus includes a first developing device, accommodating a first kind of toner without an offset preventing agent, a second developing device accommodating a second kind of toner containing an offset preventing agent, and a roller fixing device having a supply portion for supplying an offset preventing agent. The image forming apparatus changes the amount of the offset preventing agent to be supplied to the fixing roller between the case of fixing a copy image formed with the first kind of toner and the case of fixing a copy image formed with the second kind of toner.