Photographic elements containing reflective or diffusely transmissive supports
AssigneeEastman Kodak Company
InventorsMark A. Pollock, William J. Stowell, James J. Krutak
Life of this patent
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Abstract
Disclosed are photographic elements having reflective or diffusely transmissive supports shaped from a continuous polyester phase having dispersed therein microbeads of cellulose acetate which are at least partially bordered by void space, the microbeads of cellulose acetate being poresent in an amount of about 10-30% by weight based on the weight of said polyester, said void space occupying about 2-50% by volume of said shaped article. Such articles have excellent physical properties.
Claims8
A photographic element comprised of a reflective or diffusely transmissive support, and coated on said support,
- at least one radiation-sensitive silver halide emulsion layer,
- characterized in that said support is comprised of a continuous polyester phase having dispersed therein microbeads of cellulose acetate which are at least partially bordered by void space, said microbeads of cellulose acetate being present in an amount of 10-30% by weight based on the weight of said polyester, said void space occupying 2-50% by volume of said support, said polyester having an I.V. of at least 0.55 and said cellulose acetate having an acetyl content of about 28-44.8% by weight, a viscosity of about 0.02-90 seconds and the microbeads thereof having an average diameter of about 0.1-50 microns.
A photographic element comprised of
- a reflective or diffusely transmissive support and, coated on said support,
- at least one radiation-sensitive silver halide emulsion layer,
- characterized in that said support is comprised of a continuous polyester phase having dispersed therein microbeads of cellulose acetate which are at least partially bordered by void space, said microbeads of cellulose acetate being present in an amount of 10-30% by weight based on the weight of said polyester, said void space occupying 2-50% by volume of said support, said polyester having an I.V. of at least 0.55 and said cellulose acetate having an acetyl content of about 28 to 44.8% by weight, a viscosity of about 0.01 to 90 seconds, and the microbeads thereof having an average diameter of about 0.1 to 50 microns.
Dependencies are inferred from the claim text.