Incremental printing of symbolic information – Thermal marking apparatus or processes – Including cooling device
Patent
1993-12-02
1996-05-21
Le, N.
Incremental printing of symbolic information
Thermal marking apparatus or processes
Including cooling device
361697, B41J 232
Patent
active
055194290
ABSTRACT:
A thermal image recording apparatus for recording an image on a recording medium has a housing and mounted within the housing a subhousing containing a thermal print head formed of a thermal printing circuit, including an array of individual activatable heating elements, and a heat sink in conductive contact with such elements for cooling the same, a blower for creating a stream of cooling air and air guides for guiding the air stream into contact with the heat sink and thence to the outside of the housing. A platen roller is in the housing for supporting the recording medium in a recording position and the subhousing is pivotally mounted in the housing to bring the print heat into and out of an operative position with the heating elements proximate to the recording medium. The subhousing has an opening in its bottom wall through which the heating elements project in exposed relation to the recording medium while the heat sink extends into the subhousing interior. The blower is situated within the subhousing and communicates via air intake and exhaust openings in another wall of the subhousing directly with the atmosphere outside the housing without significant communication with the housing interior to thereby avoid heating of the housing interior.
REFERENCES:
patent: 5053792 (1991-10-01), Une
patent: 5237338 (1993-08-01), Stephenson
patent: 5374944 (1994-12-01), Janosky et al.
Leys Paul
Zwijsen Jan
Agfa-Gevaert N. V.
Daniel William J.
Le N.
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