Lubrication system for thermally-imaged films

Details Lubrication system for thermally-imaged films Lubrication system for thermally-imaged films

1994-06-29

1995-09-05

Berman, Jack I.

Radiant energy

With infrared or thermal pattern recording

250318, G03G 516

Patent

active

054480663

ABSTRACT:
A lubrication system for thermally-imaged films comprising a thermally-active imaging film including a thermally-active imaging layer, a lubrication layer including poly(tetra-fluoroethylene) particulates coupled to said thermally-active imaging layer, and a temperature control for controlling the temperature of the lubrication layer to prevent distortion. In a particular embodiment, the lubrication layer comprises a polymeric binder having about three percent poly(tetra-fluoroethylene) particulates therein and the imaging layer includes a polymer matrix having a heat activated image producing compound therein. The temperature control prevents a heat buildup in the lubrication layer in excess of 230 millijoules per pixel. The temperature control controls the thermal output of a thermal printing head for heating selected portions of the imaging film, the lubrication layer being positioned between the printing head and the imaging layer, and includes a variable heat sink coupled to the printing head for controlling the heat transfer rate from the printing head to the lubrication layer.

REFERENCES:
patent: 4379835 (1983-04-01), Lowrey et al.
patent: 4829050 (1989-05-01), Henzel et al.

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