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:
Mar. 03, 2009
Filed:
Mar. 19, 2004
Yoshinobu Takeyama, Kawasaki, JP;
Nobuyuki Yanagawa, Chigasaki, JP;
Yoshinobu Takeyama, Kawasaki, JP;
Nobuyuki Yanagawa, Chigasaki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus including a light scanning device configured: to store in advance a predetermined base correction time; initiate optical image writing for a first round of rotation of an endless intermediate transfer member onto a latent image bearing member included in a first visible image forming unit based on a standard angle detection signal detected after a time Te determined as a time elapsed by a base correction time tfrom a time Ta; to correct a phase, during a period between a time Tc and a time including a time Tc and the base correction time t, based on a time lag dtand a time lag dt; and to initiate optical image writing for a second round of rotation of the endless intermediate transfer member onto the latent image bearing member included in the first visible image forming unit.