Process for heat treatment of a photographic support

Details Process for heat treatment of a photographic support Process for heat treatment of a photographic support

1995-11-16

1997-05-13

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

430501, 430533, 430930, 430935, 430939, 264234, G03C 1795

Patent

active

056291418

ABSTRACT:
There is disclosed a process for heat treatment of a photographic polyester film support, comprising steps of winding a biaxially oriented polyester film into a roll so that the thickness of a gas layer lying between the film layers continually becomes 1.5 .mu.m to 10 .mu.m, and then subjecting the roll of the polyester film to heat treatment at a temperature between 50.degree. C. and the glass transition temperature of the polyester. According to the above process, a photographic polyester film support, which is excellent in flatness of the film and does not cause unevenness of coating, can be provided.

REFERENCES:
patent: 4141735 (1979-02-01), Schrader et al.
patent: 5254445 (1993-10-01), Takamuki et al.
patent: 5294473 (1994-03-01), Kawamoto
patent: 5310635 (1994-05-01), Szajewski
patent: 5462824 (1995-10-01), Kawamoto et al.

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