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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 9424496 B1

PDFFull Text
Date of Patent:
Aug. 23, 2016

Filed:

Apr. 01, 2015

Image forming apparatus with image deformation correction using user input length information of test image line drawing

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventor:

Yuzuru Yano, Moriya, JP;

Assignee:

Canon Kabushiki Kaisha, Tokyo, JP;

Attorney:

Fitzpatrick, Cella, Harper & Scinto

Primary Examiner:

Scott A Rogers

Int. Cl.
CPC ...
G06K 15/14 (2006.01); H04N 1/00 (2006.01); H04N 1/29 (2006.01); B41J 2/435 (2006.01); G03G 15/043 (2006.01); G06K 15/02 (2006.01); H04N 1/23 (2006.01); G06K 15/12 (2006.01); G03G 15/00 (2006.01); B41J 29/393 (2006.01);
U.S. Cl.
CPC ...
G06K 15/027 (2013.01); B41J 2/435 (2013.01); G03G 15/043 (2013.01); G03G 15/5062 (2013.01); G06K 15/1204 (2013.01); G06K 15/14 (2013.01); H04N 1/00015 (2013.01); H04N 1/00031 (2013.01); H04N 1/00034 (2013.01); H04N 1/00045 (2013.01); H04N 1/00082 (2013.01); H04N 1/00352 (2013.01); H04N 1/2346 (2013.01); H04N 1/29 (2013.01); B41J 2029/3935 (2013.01); G03G 2215/00569 (2013.01);
Abstract

An image forming apparatus for easily setting a parameter for avoiding an occurrence of defective image by the sector deformation is provided. The image forming apparatus forms a test image. The test image having a first line drawing and a second line drawing, each of which is extending in a first direction, and the first line drawing and the second line drawing are provided at different positions in a second direction which is perpendicular to the first direction. Further, the image forming apparatus obtains the length information of the first and the second line drawings. Based on the length information of the first and the second line drawings, a correction condition is set. Then, the image forming apparatus corrects the image data based on the correction condition according to a position of the second direction.

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