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:
Jun. 03, 2003
Filed:
Jul. 27, 2001
Applicant:
Inventor:
Hideaki Kibune, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/500 ; G03G 1/501 ; G03G 1/508 ;
U.S. Cl.
CPC ...
G03G 1/500 ; G03G 1/501 ; G03G 1/508 ;
Abstract
An image forming method causes each of a plurality of image stations to form a test patch image on a respective image carrier and senses the density of the test patch image for executing image quality compensation control. The test patch image is formed after image formation using an upstream one of two developing portions in a direction of rotation of the image carrier or before image formation using a downstream one of the developing portions. This method promotes high-speed operation, miniaturization and low-cost configuration of an image forming apparatus.