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:
Oct. 08, 1991
Filed:
Mar. 20, 1990
Ulf Koch, Eberbach, DE;
Esselte Meto International Produktions GmbH, Hirschhorn, DE;
Abstract
A thermal printing head (10) is described which comprises a supporting frame (12, 14, 16, 18, 20, 22) and a thermal printing plate (28). Several individually triggerable heating elements are provided along a line on the front side of the thermal printing plate (28). The thermal printing plte (28) is held in frictional contact with a counter-pressure roll (26) rotatably mounted in the supporting frame. The line of heating elements contacts the counter-pressure roll along a paraxial generating line. At least one locking hook (38, 40) being in engagement with a pin fixed on the supporting frame is provided on the thermal printing plate (28) to be spaced apart from the line of heating elements. At least one pressure spring (54, 56) is provided in the region situated between the at least one locking hook (38, 40) and the line of heating elements between a stop (62, 64) being in fixed connection with the supporting frame and the rear side of the thermal printing plate (28). The at least one pressure spring (54, 56 ) is secured on the thermal printing plate (28) by means of a retaining means (50, 52, 48).