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:
Nov. 16, 2010

Filed:

Apr. 30, 2007
Applicants:

Yasuhiro Nihei, Kanagawa, JP;

Masaaki Ishida, Kanagawa, JP;

Atsufumi Omori, Kanagawa, JP;

Dan Ozasa, Kanagawa, JP;

Inventors:

Yasuhiro Nihei, Kanagawa, JP;

Masaaki Ishida, Kanagawa, JP;

Atsufumi Omori, Kanagawa, JP;

Dan Ozasa, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/435 (2006.01);
U.S. Cl.
CPC ...
Abstract

In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high frequency clock to output a detection value indicating the detected scanning time. The detection value and a predetermined target value are compared to output a comparison result. A phase data is created based on the comparison result. A pixel clock whose phase is controlled based on both the high frequency clock and the phase data is created.


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