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. 25, 2000
Filed:
Jun. 10, 1999
Applicant:
Inventor:
Hayato Shinohara, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
399302 ; 399 46 ; 399298 ; 399301 ;
Abstract
An image forming apparatus has a photosensitive drum on which toner images of different colors are formed and sequentially transferred in layers to an intermediate transfer drum. In the continuous color image formation, depending on whether to be the first page or after second page, for example, the control of the correcting system for color mis-registration is switched so that the mechanical effect on the apparatus caused by biasing and unbiasing actions of a transfer roller and an ICL roller toward the intermediate transfer drum in each condition can be suppressed to the minimum without penalties in throughput.