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:
Aug. 28, 2007

Filed:

Sep. 27, 2005
Applicants:

Tadayuki Ueda, Tokyo, JP;

Hiroyuki Maruyama, Tokyo, JP;

Toshihiro Motoi, Tokyo, JP;

Kenji Izumiya, Tokyo, JP;

Ryuji Okutomi, Tokyo, JP;

Satoshi Ogata, Tokyo, JP;

Inventors:

Tadayuki Ueda, Tokyo, JP;

Hiroyuki Maruyama, Tokyo, JP;

Toshihiro Motoi, Tokyo, JP;

Kenji Izumiya, Tokyo, JP;

Ryuji Okutomi, Tokyo, JP;

Satoshi Ogata, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

An image printing apparatus includes a control unit which controls a rotational speed of an image carrier; a detecting unit which detects data of the rotational speed; a storage unit which stores the rotational speeds up to n past rotation cycle of said image carrier; and a determining unit which determines whether a rotational speed difference between a latest rotational speed in a current rotation cycle and a rotational speed in n past rotation cycle before the current rotation cycle at a predetermined interval, which includes the same rotational position in respective rotation cycles and its near position, is more than a predetermined reference value, wherein said control unit controls the rotational speed of said image carrier by using the data of rotational speeds at a predetermined interval including the same rotational position in one or n past rotation cycle before the current rotation cycle, and further said control unit controls a rotational speed in a subsequent rotation cycle next to the current rotation cycle in accordance with a determination result obtained by said determining unit.


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