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:
Oct. 09, 2001
Filed:
Aug. 18, 1999
Tsuyoshi Todome, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A color copying machine includes four image forming sections that are arranged side by side. A conveyor mechanism for conveying a recording sheet is provided under the image forming sections. Located on the downstream side of the conveyor mechanism is a fixing unit for heating the recording sheet, having a transferred toner image thereon, thereby fixing the toner image. A driving roller of the conveyor mechanism, which is located close to the fixing unit, is formed of Nobinite with a low thermal expansion coefficient. Thus, although the driving roller is subjected to thermal expansion by heat from the fixing unit, the traveling speed of a conveyor belt of the conveyor mechanism cannot be changed, so that an output image can be prevented from suffering shifts.