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:
Sep. 01, 2009
Filed:
Aug. 27, 2004
Applicant:
Tadashi Shinohara, Kanagawa, JP;
Inventor:
Tadashi Shinohara, Kanagawa, JP;
Assignee:
Ricoh Company, Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 29/38 (2006.01); G03G 15/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an image forming apparatus, an image forming unit includes a movable member that is rotationally driven by a driving unit. A moving distance or a moving speed of the movable member is detected. The driving unit is controlled based on a quantity of control. An occurrence of a detection error or a control error is determined based on the moving distance, the moving speed, or the quantity of control. A predetermined error process is executed if an error occurs.