Photographic support containing different polyester layers

Details Photographic support containing different polyester layers Photographic support containing different polyester layers

1980-04-18

1981-03-10

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

428480, 430211, 430535, G03C 178

Patent

active

042555167

ABSTRACT:
A photographic support of a composite polyester film in which additives and oligomers can be incorporated in the support without exerting any undesirable effects upon photographic characteristics, which film is constructed by an inner layer of polyester containing volatile diffusible substances or exudative substances, and a covering layer of another sort of polyester, with which both sides of the inner layer are covered, not containing the above-described substances judging from practical viewpoint and that, having a glass transition point equal to or higher than that of the inner layer, and which film is orientated along at least one prescribed axis.

REFERENCES:
patent: 3685734 (1972-08-01), Paciorek et al.
patent: 3775152 (1975-11-01), Jacoby et al.
patent: 3944699 (1976-03-01), Mathews et al.
patent: 4198458 (1980-04-01), Mitsuighi et al.

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