Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified backing or protective layer containing
Patent
1998-01-09
2000-02-08
Letscher, Geraldine
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified backing or protective layer containing
430523, 430531, G03C 176
Patent
active
06022679&
ABSTRACT:
There is disclosed a method of manufacturing a photographic polyester film, comprising forming an unstretched film controlling; each of the temperature of the inlet of a melt extruder, at a temperature in the range from "the melting point of the polymer (Tm)"-10.degree. C. to the Tm+15.degree. C.; the temperature of the central part of a screw, at a temperature in the range from the Tm to the Tm+30.degree. C.; and the temperature of the outlet thereof, at a temperature in the range from the Tm+10.degree. C. to the Tm+35.degree. C., followed by biaxial stretching and heat-setting, and a photographic support manufactured by the method. The thus obtained photographic polyester support excels in photographic properties, adhesiveness, and mechanical strength, and that moreover hardly causes a core set curl and fog formation.
REFERENCES:
patent: 5270160 (1993-12-01), Hiraoka et al.
patent: 5294473 (1994-03-01), Kawamoto et al.
patent: 5472831 (1995-12-01), Nishiura et al.
patent: 5677116 (1997-10-01), Rieger et al.
patent: 5736309 (1998-04-01), Kawamoto
Fuji Photo Film Co. , Ltd.
Letscher Geraldine
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