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:
Jun. 11, 2002
Filed:
Apr. 04, 2001
Applicant:
Inventors:
Hung-Lieh Hu, Hsinchu, TW;
Yuan-Liang Lan, Hsinchu, TW;
Chieh-Wen Wang, Hsinchu, TW;
Jhih-Ping Lu, Hsinchu, TW;
Charles C. Chang, Hsinchu, TW;
Assignee:
Industrial Technology Research Institute, Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/9393 ;
U.S. Cl.
CPC ...
B41J 2/9393 ;
Abstract
A function test device for optical print head heaters in thermal bubble printers, which includes: a test end power supply to provide the power needed for the test device; a linear optical coupling device serially connected between a pulse power supply for driving a print head circuit and the print head heater to detect variation of a triggering current; and an amplification circuit to amplify an output signal of the linear optical coupling device and send the signal to a microprocessor.