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:
Nov. 04, 1980
Filed:
Oct. 03, 1978
Applicant:
Inventors:
David R Baraff, Ottawa, CA;
Lawrence H Hobbs, West Carleton, CA;
Assignee:
Northern Telecom Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219216 ; 219543 ;
Abstract
Any element of a thermal print bar of resistive material is heated by a current pulse passed across the bar between an appropriate conductor pairing. Certain conductors are deposited in two parts with a rectifying layer deposited between the parts to provide diode isolation of heating paths from one another.