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. 22, 2008
Filed:
Aug. 21, 2006
Takashi Fujimori, Moriya, JP;
Yoritsugu Maeda, Toride, JP;
Satoru Kanno, Kashiwa, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
The present invention performs density adjustment (ATR process) and transfer voltage control (ATVC) in parallel; the ATR process transfers and forms a patch image on an intermediate transfer member and detects and adjusts the density of the patch image, and the ATVC gradually raises a transfer voltage to measure a transfer current and generates a transfer voltage corresponding to a target transfer current to control a transfer of an image from an image carrier to the intermediate transfer member. The present invention determines the timing at which the patch image is formed in the density adjustment, in association with the transfer voltage in the transfer voltage control step, to allow a density adjustment process based on density adjustment and transfer voltage control to be executed in parallel.