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. 11, 2001
Filed:
Jan. 14, 2000
Katsumi Munenaka, Kawasaki, JP;
Norio Matsui, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a plurality of image bearing members; image forming means for forming images of different colors on the image bearing members, respectively; a transfer material conveyer belt for carrying a transfer material; a driving roller for transmitting a driving force to the transfer material conveyer belt; wherein the images of different colors formed on the image bearing members are sequentially transferred in an overlying manner onto the transfer material carried on the transfer material conveyer belt; storing means for storing information on thicknesses of the transfer material conveyer belt at different positions in a movement direction thereof; detecting means for detecting a predetermined position of the transfer material conveyer belt; and control means for controlling timing of start of image formation for each of the image bearing members by associated one of the image forming means on the basis of the information stored in the storing means and a result of detection by the detecting means.