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.:
Date of Patent:
Apr. 27, 2004
Filed:
Feb. 07, 2002
Applicant:
Inventor:
Kuan-Chih Huang, Taipei Hsien, TW;
Assignee:
Hi-Touch Imaging Technologies Co., Ltd., Pan-Chiao, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/325 ; B41J 3/516 ;
U.S. Cl.
CPC ...
B41J 2/325 ; B41J 3/516 ;
Abstract
A color printer with a single photo sensor for detecting the position of the ink ribbon. A single photo sensor is place so that it can detect transparent and opaque sections of the ink ribbon. The ribbon winds at a constant speed, so the pattern of transparent and opaque sections periodically repeats. The controller can use the periodicity of the transparent and opaque sections to calculate which dye frame the print head is positioned over. Using this information, the printer can advance the ink ribbon to the desired dye frame for printing onto the photo paper.