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:
Jul. 13, 2004
Filed:
Dec. 28, 2001
Hiroshi Kobayashi, Kawasaki, JP;
Tomoyuki Nagamine, Kawasaki, JP;
Hidefumi Tasaki, Kawasaki, JP;
Katsumi Takada, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A fixing device comprises an upper heat roller and a lower heat roller which, by contact rotations of their roller surfaces, thermally fix images on cut sheets passing therebetween. The fixing device further comprises a single oil roller which supplies oil for cut sheet release to the upper and lower heat rollers. When conveying to a process unit a cut sheet B to be back-side printed which has been delivered via a circulation path, a conveyance control unit forms a conveyance spacing L from a precedent cut sheet A which spacing conforms to one turn or more of the lower heat roller, so as to ensure uniform application of oil from the upper heat roller to the lower heat roller during the cut sheet vacant interval.