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. 04, 1978
Filed:
Nov. 21, 1975
Applicant:
Inventors:
Roland Moraw, Naurod, DT;
Kurt Dryczynski, Wallau, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346151 ; 219497 ;
Abstract
A method and apparatus for recording and erasing images on thermoplastic photoconductive recording material wherein an adjustable heat supply is provided to the recording medium dependent upon the temperature of the recording medium at the start of the heating cycle. A bridge circuit is disclosed for heating the recording medium and for sensing the temperature thereof such that the heating current supplied to the heating means is regulated according to the instantaneous temperature of the recording medium.