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:
Jun. 03, 2014

Filed:

Dec. 20, 2011
Applicant:

Yoshirou Yamazaki, Kanagawa, JP;

Inventor:

Yoshirou Yamazaki, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 29/393 (2006.01); B41J 29/38 (2006.01); B41J 2/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

A defective recording element detecting apparatus includes: an image signal acquiring device which acquires read image signals obtained by reading, a linear test pattern recorded by an image recording apparatus having: a recording head and a medium conveying device which causes relative movement between a recording medium and the recording head in a signal decomposing device which sequentially assigns reading pixel numbers 0 to n to the acquired read image signals, divides the reading pixel numbers by an analysis pitch unit PS to obtain remainders, and decomposes the read image signals into an image signal of each of the obtained remainders; a fluctuation signal calculating device which calculates a fluctuation signal of each of the remainders; and an identifying device which identifies a defective recording element among the plurality of recording elements based on the fluctuation signal of each of the remainders.


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