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:
Sep. 06, 1988
Filed:
Sep. 04, 1986
Applicant:
Inventors:
Alan D Hart, Bristol, GB;
Alan P Pritchard, Bristol, GB;
Assignee:
British Aerospace PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219216 ; 219543 ; 2504941 ;
Abstract
A thermal image producing device comprising an array of separately addressable thin-film resistors on a substrate with a heat sink at its near face and, so as to render the heat flux flowing through the substrate into the heat sink spatially and temporarily uniform, e.g. to avoid smearing, an array of compensating resistors, each beneath a respective one of the image producing resistors and separated therefrom by an insulating layer. Each compensating resistor is controlled so that, it and its associated image producing resistor together, produce a uniform total heat flux.