Thermally stable subbing layer for imaging elements

Details Thermally stable subbing layer for imaging elements Thermally stable subbing layer for imaging elements

1998-04-27

2000-03-14

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Thermographic process

Heat applied before imaging

430 60, 430533, 430534, 430539, 430637, 430638, 430930, 430935, 430954, 427384, 4273935, 428480, 428483, G03C 174, G03C 1795, G03C 181

Patent

active

060371080

ABSTRACT:
A support for an imaging element is described, which support comprises a polyester polymeric film having coated thereon a subbing layer comprising gelatin and a multi-hydric organic compound having at least three hydroxyl groups, which gelatin subbing layer coated support has been subjected to a heat treatment to reduce the core-set curling tendency of the polymeric film. Imaging elements for use in an image-forming process is also described, which elements comprise a gelatin subbing layer coated polyester polymeric film support as described above, and an image-forming layer coated on the subbed support. A method for forming a heat-tempered, gelatin-subbed support for an imaging element is also described, comprising coating a subbing layer comprising gelatin and a multi-hydric organic compound having at least three hydroxyl groups on a polyester polymeric film, and subjected the coated film to heat treatment to reduce the core-set curling tendency of the polymeric film. In accordance with preferred embodiment of the invention, the polymer film comprises poly(ethylene naphthalate), the multi-hydric organic compound comprises glycerol, sorbitol, or pentaerythritol, and the heat treatment comprises subjecting the gelatin subbing layer coated support to a temperature of from 50.degree. C. up to the glass transition temperature of the polymeric film for from 0.1 to 1500 hours.

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