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. 12, 1976
Filed:
Apr. 14, 1975
Robert McIntosh, Nashua, NH (US);
Centronics Data Computer Corporation, Hudson, NH (US);
Abstract
A thermal print head assembly preferably for use with temperature sensitive impression material in a dot-matrix line printer includes a housing having a plurality of electrically actuatable means for impinging upon the impression material; means for guiding each of the plurality of impinging means to form a straight line at the housing front end and adjacent the impression material; and electrical means positioned within the housing for heating the impinging means without interfering with their movement through the frong housing end and being insulated from the housing to prevent excessive heating thereof. In a preferred embodiment, the electrical heating means is energized simultaneously with the motor of the line printer to maintain the forward ends of the impinging means at a temperature of the order of 300.degree.F. to allow printing on thermally activated paper.