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.:

US 7894764 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 22, 2011

Filed:

May. 16, 2007
Applicants:

Kazumichi Yamauchi, Hachioji, JP;

Satoshi Sakata, Hino, JP;

Kenji Yamamoto, Hachioji, JP;

Akira Okamoto, Hino, JP;

Kazutoshi Yoshimura, Hachioji, JP;

Inventors:

Kazumichi Yamauchi, Hachioji, JP;

Satoshi Sakata, Hino, JP;

Kenji Yamamoto, Hachioji, JP;

Akira Okamoto, Hino, JP;

Kazutoshi Yoshimura, Hachioji, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); G03G 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An image forming apparatus, which includes: an image forming section to form an image on a transfer sheet conveyed to the image forming section; an edge detecting sensor which detects an edge position of the transfer sheet in a main scanning direction while the transfer sheet is conveyed to the image forming section; and a controller which controls an image writing position at the image forming section based on a result of an edge position detection by the edge detecting sensor; wherein the edge detecting sensor comprises a plurality of light sources each having a different wavelength, and the controller comprises a light source controller which controls lighting of the plural light sources.


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