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:
Dec. 14, 2004
Filed:
Feb. 04, 2003
Kenji Watanabe, Shizuoka, JP;
Shigeru Kameyama, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A color image forming apparatus has an intermediate transferring body or a driven roller speed detector that is driven by a conveying belt; a calculation device for calculating a difference between a target speed and the speed of the intermediate transferring body or of the conveying belt; and a drive controller for employing the speed difference obtained by the calculation device to correct the speed of the intermediate transferring body or of the conveying belt. In a low-speed printing mode, before an actual image is formed on a transfer material conveyed along the conveying belt or on the intermediate transferring body, speed correction is performed at the 1/1-speed and, after the speed correction has been completed, the speed in the low-speed mode is determined, and the speed correction for the intermediate transferring body or the conveying belt is not thereafter performed during the printing.