Self-fixing imaging film containing reductant precursor
AssigneeEnergy Conversion Devices, Inc.
InventorTerry T. Yu
Life of this patent
Estimating the term…
Abstract
Improved imaging film-forming compositions and improved organo tellurium imaging films are provided that require no separate fixing. Normal development of the film by application of heat results in a fixed film.
Claims15
A method for recording electromagnetic radiation in which a fixed image is provided wherein said method comprises imagewise impinging said radiation upon a photosensitive film to produce a change in at least one property thereof, said film being made from a film-forming composition, which composition comprises:
- (a) a reducible image forming compound;
- (b) a reductant precursor which will abstract labile hydrogen from a labile hydrogen source under the influence of imaging energy to become a reducing agent with respect to the image forming compound, said reductant precursor present in an amount such that when the film is developed normally by heating, essentially all of the reductant precursor is removed from the film and the film is thereby fixed, said amount of reductant precursor being in the range of from 0.5% to 3.0% by weight of the total film-forming composition;
- (c) a source of labile hydrogen for reaction with said reductant precursor;
- and
- (d) a matrix in which said reducible image forming compound, reductant precursor and source of labile hydrogen are combined in amounts effective to form a composition which may be applied to a substrate,
- said method further comprising subjecting the film after said impinging to normal development by heating for a period of time sufficient to develop and fix the film by removing essentially all of the reductant precursor.
A method for recording electromagnetic radiation in which a fixed image is provided wherein said method comprises imagewise impinging said radiation upon a photosensitive film to produce a change in at least one property thereof, said film being made from a film-forming composition, which composition comprises:
- (a) an image forming tellurium compound;
- (b) a reductant precursor which will abstract labile hydrogen from a labile hydrogen source under the influence of imaging energy to become a reducing agent with respect to the image forming tellurium compound, said reductant precursor present in an amount such that when the film is developed normally by heating, essentially all of the reductant precursor is removed from the film and the film is thereby fixed, said amount of reductant precursor being in the range of from 0.5% to 3.0% by weight of the total film-forming composition;
- (c) a source of labile hydrogen for reaction with said reductant precursor;
- and
- (d) a matrix in which said tellurium compound, said reductant precursor and source of labile hydrogen are combined in amounts effective to form a composition which may be applied to a substrate,
- the method further comprising subjecting the film after said impinging to normal development by heating for a period of time sufficient to develop and fix the film by removing essentially all of the reductant precursor.
Dependencies are inferred from the claim text.