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 7391426 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 24, 2008

Filed:

Jul. 27, 2005
Applicant:

Young-jung Yun, Suwon-si, KR;

Inventor:

Young-jung Yun, Suwon-si, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/325 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method and apparatus for adjusting the alignment of an image forming device using two thermal heads, wherein the method includes the steps of (a) printing first and second predetermined patterns on the medium by using the first and second thermal heads, respectively, (b) detecting a distance difference of print positions between the first and second thermal heads by using the printed patterns, and (c), based on the detected distance difference, transforming image data printed by the thermal heads to adjust the alignment in subpixel units. Therefore, a distance difference of printing positions of the thermal heads can be compensated by detecting the distance difference between the printing positions of the thermal heads, and moving the target image data by the detected distance difference. As a result, the alignment of the thermal heads can be easily and accurately adjusted.


Find Patent Forward Citations

Yun, Young-jung. (2008). Method and apparatus for adjusting alignment of image forming device (U.S. Patent No. 7391426). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7391426

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