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. 28, 1977
Filed:
May. 10, 1976
Applicant:
Inventor:
Steven Kos, Ottawa, CA;
Assignee:
Northern Telecom Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346 / ; 219216 ;
Abstract
A drive circuit for a matrix coupled thermal printing bar which permits the address of large arrays as would be used in a thermal facsimile printing system without the necessity for individually driving each element or providing isolated diodes to prevent leakage paths. The circuit utilizes the application of an intermediate voltage to the unaccessed rows or columns to limit the applied power to the unaccessed elements below that required to raise them to printing temperatures.