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.

Date of Patent:
Jan. 24, 2012

Filed:

Mar. 27, 2009
Applicants:

Akifumi Isobe, Hidaka, JP;

Ryuji Okutomi, Hino, JP;

Hiroyuki Watanabe, Toyokawa, JP;

Tadayuki Ueda, Kokubunji, JP;

Yoshihito Sasamoto, Hachioji, JP;

Takashi Nara, Hachioji, JP;

Inventors:

Akifumi Isobe, Hidaka, JP;

Ryuji Okutomi, Hino, JP;

Hiroyuki Watanabe, Toyokawa, JP;

Tadayuki Ueda, Kokubunji, JP;

Yoshihito Sasamoto, Hachioji, JP;

Takashi Nara, Hachioji, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An image forming apparatus having a color mode and a monochromatic mode, which includes: a transmission member, which can be switched between a transmitted state where a motor transfers a drive force to a single photoreceptor drum and a non-transmitted state where the motor does not transfer the drive force to the single photoreceptor drum; and a controller which switches to the non-transmitted state while executing an image formation in the monochromatic mode, and when a command to execute a next image formation is not instructed, switches to the transmitted state after a phase adjustment of each photoreceptor drum after the image formation in the monochromatic mode, and controls the motor to execute a slight rotation operation at every prescribed period of time by synchronizing plural drums including the single photoreceptor drum with each other through the transmission member.


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