Thermal print head assembly

Details Thermal print head assembly Thermal print head assembly

1975-04-14

1976-10-12

Rader, Ralph T.

Textiles: fiber preparation

346 76R, 219216, B41J 304

Patent

active

039852164

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.

REFERENCES:
patent: 1770493 (1930-07-01), Ranger
patent: 3139026 (1964-06-01), Meckstroth et al.
patent: 3300017 (1967-01-01), Yazejian et al.
patent: 3690431 (1972-09-01), Howard
patent: 3777116 (1973-12-01), Brescia et al.
patent: 3842957 (1974-10-01), Wilkin et al.

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