Thermal print head assembly
US3985216A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1975 |
| Grant date | Oct 12, 1976 |
| Priority date | — |
| Expiry date | Apr 14, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/31
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.