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. 07, 2010
Filed:
Mar. 18, 2008
Applicants:
Takashi Morishita, Kanagawa, JP;
Yoshimitsu Ogura, Kanagawa, JP;
Kenji Kagami, Kanagawa, JP;
Jun Watanabe, Tokyo, JP;
Yuji Ieiri, Kanagawa, JP;
Tomokazu Tsuchiya, Kanagawa, JP;
Shigeru Yoshigai, Kanagawa, JP;
Inventors:
Takashi Morishita, Kanagawa, JP;
Yoshimitsu Ogura, Kanagawa, JP;
Kenji Kagami, Kanagawa, JP;
Jun Watanabe, Tokyo, JP;
Yuji Ieiri, Kanagawa, JP;
Tomokazu Tsuchiya, Kanagawa, JP;
Shigeru Yoshigai, Kanagawa, JP;
Assignee:
Ricoh Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 29/393 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an image forming apparatus, a control unit determines that dirt is present on the linear scale when a detecting unit detects a change in a moving direction of a moving member while the moving member is moving at a constant speed.