Image-receiving element with particle containing overcoat for diffusion transfer film products
AssigneePolaroid Corporation
InventorKenneth C. Waterman
Life of this patent
Estimating the term…
Abstract
An image-receiving element for use in photographic and photothermographic diffusion transfer film units of the type wherein the image-receiving element is designed to be removed or "peeled-apart" from a photosensitive element following exposure and processing. The present image-receiving element comprises in sequence, a support, an image-receiving layer, and an overcoat layer. The overcoat layer comprises a major amount by dry weight of water-insoluble particles and a minor amount by dry weight of a water-insoluble polymeric latex binder material. The water-insoluble particles may comprise inorganic particles such as colloidal silica, and/or organic particles such as water-insoluble polymeric latex particles.
Claims15
An image-receiving element for use in a photographic or photothermographic diffusion transfer film unit wherein an image-receiving element is adapted to be separated from a photosensitive element after photoexposure and photographic processing, said image-receiving element comprising, in sequence:
- a support;
- an image receiving layer;
- an overcoat layer residing on said image-receiving layer, said overcoat layer comprising a major amount by dry weight of water-insoluble particles and a minor amount by dry weight of a water-insoluble polymeric latex binder material, wherein said water-insoluble particles are selected from the group consisting of inorganic particles, organic polymeric latex particles having a minimum film-forming temperature of from about 10.degree. C. to about 40.degree. C. and a glass transition temperature of at least 10.degree. C. greater than their minimum film-forming temperature and mixtures thereof;
- and
- an optional strip-coat layer comprising a hydrophilic colloid residing on said overcoat layer, wherein said overcoat layer is the outermost layer of said image-receiving element when said strip-coat layer is not present or said strip-coat layer, when present, is the outermost layer of said image-receiving element.
A photographic diffusion transfer film unit wherein an image-receiving element is adapted to be separated from a photosensitive element after photoexposure and photographic processing, said film unit comprising:
- a photosensitive element comprising a support carrying at least one silver halide emulsion;
- an image-receiving element arranged in superposable relationship with said photosensitive element and comprising an overcoat layer residing on said image-receiving layer, said overcoat layer comprising a major amount by dry weight of water-insoluble particles and a minor amount by dry weight of a water-insoluble polymeric latex binder material, wherein said water-insoluble particles are selected from the group consisting of inorganic particles, organic polymeric latex particles having a minimum film-forming temperature of from about 10.degree. C. to about 40.degree. C. and a glass transition temperature of at least 10.degree. C. greater than their minimum film-forming temperature and mixtures thereof and an optional strip-coat layer comprising a hydrophilic colloid residing on said overcoat layer, wherein said overcoat layer is the outermost layer of said image-receiving element when said strip-coat layer is not present or said strip-coat layer when present is the outermost layer of said image-receiving element;
- and
- means for providing an aqueous alkaline processing composition for initiating development of said silver halide emulsion after photoexposure to form an image on said image-receiving layer.
A photothermographic diffusion transfer film unit wherein an image-receiving element is adapted to be separated from a photosensitive element after photoexposure and photographic processing, said film unit comprising:
- a photosensitive element comprising a support carrying at least one silver halide emulsion;
- an image-receiving element arranged in superposable relationship with said photosensitive element and comprising an overcoat layer residing on said image-receiving element, said overcoat layer comprising a major amount by dry weight of water-insoluble particles and a minor amount by dry weight of water-insoluble polymeric latex binder material, wherein said water-insoluble particles are selected from the group consisting of inorganic particles, organic polymeric latex particles having a minimum film-forming temperature of from about 10.degree. C. to about 40.degree. C. and a glass transition temperature of at least 10.degree. C. greater than their minimum film-forming temperature and mixtures thereof and an optional strip-coat layer comprising a hydrophilic colloid residing on said overcoat layer, wherein said overcoat layer is the outermost layer of said image-receiving element when said strip-coat layer is not present or said strip-coat layer, when present, is the outermost layer of said image-receiving element.
Dependencies are inferred from the claim text.