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. 18, 2014

Filed:

Dec. 16, 2011
Applicant:

Yoshirou Yamazaki, Kanagawa, JP;

Inventor:

Yoshirou Yamazaki, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/60 (2006.01); H04N 1/46 (2006.01); G06K 15/10 (2006.01); B41J 29/38 (2006.01); B41J 2/205 (2006.01); B41J 29/393 (2006.01); B41J 2/21 (2006.01);
U.S. Cl.
CPC ...
B41J 2/2142 (2013.01); B41J 2/2146 (2013.01);
Abstract

A defective recording element detecting apparatus includes: a read image data acquiring device which acquires read image data of a test pattern recorded on a recording medium by a recording head having recording elements; a reference area setting device which sets a reference area including a part of the test pattern on a read image representing image contents of the read image data; a comparison area setting device which sets a comparison area on the read image; a correlation operation device which performs a correlation operation between the comparison area and the reference area; a distortion correction value determining device which determines a distortion correction value, from a result of the correlation operation; an image distortion correcting device which corrects image distortion of the read image using the distortion correction value; and a defective recording element determining device which identifies a defective recording element according to the corrected read image.


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