Photographic support and a method of manufactring the same

Details Photographic support and a method of manufactring the same Photographic support and a method of manufactring the same

1997-07-10

1998-04-07

Letscher, Geraldine

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430449, 430935, G03C 176

Patent

active

057363099

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: 4592953 (1986-06-01), Farrar et al.
patent: 5270160 (1993-12-01), Hiraoka et al.
patent: 5472831 (1995-12-01), Nishiura et al.

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