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:
May. 04, 2004
Filed:
Oct. 25, 2001
Applicant:
Inventors:
Roland Aigner, Hallein-Rif, AT;
Walter Lechner, Wals, AT;
Assignee:
Skidata AG, Gartenau, AT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/35 ;
U.S. Cl.
CPC ...
B41J 2/35 ;
Abstract
For recording and erasure of data on a reversibly writable thermal recording material ( ) with a thermal print head ( ), the heating elements ( ) of the thermal print head for recording are subjected to an energy pulse (W) which causes the recording material to be heated to a temperature (T ) at which it assumes a colored and/or opaque state. For erasure subsequent to the recording pulse (W), the heating elements ( ) are subjected to an energy pulse train (E ).