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 7889393 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 15, 2011

Filed:

Jan. 25, 2005
Applicant:

Fumio Yoshizawa, Chiba, JP;

Inventor:

Fumio Yoshizawa, Chiba, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 1/409 (2006.01);
U.S. Cl.
CPC ...
Abstract

A document reading apparatus and an image formation apparatus are disclosed. The document reading apparatus detects a locally patent image pixel in a main scanning direction, determines whether locally patent image pixels continuously appear at the same pixel position in the main scanning direction, and counts the number of lines on which locally patent image pixels continuously appear at the same position in the main scanning direction. When the number exceeds a predetermined value, pixel values of locally patent image pixels detected afterwards at the same position in the main scanning direction are removed. If a locally patent image is not detected, the counted number of lines is initialized.


Find Patent Forward Citations

Yoshizawa, Fumio. (2011). Document reading apparatus and an image formation apparatus therewith (U.S. Patent No. 7889393). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7889393

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