US4082553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interimage effects with spontaneously developable silver halide
Assignee: Eastman Kodak Co
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Filing: 1976-05-20
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Granted: 1978-04-04
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Expires: 1996-05-20
Abstract
Abstract The present invention is directed to a process of forming a photographic element capable of forming a reversal image including a support and two silver halide emulsion layers primarily responsive to a different portion of the visible spectrum upon imagewise exposure of the photographic element. The emulsion layers are positioned to permit iodide ion migration therebetween upon development. Each emulsion layer contains silver halide grains capable of forming a latent image upon imagewise exposure and a hydrophillic colloid suspending the grains. One of the emulsion layers is comprised of silver haloiodide grains. One other of the silver halide emulsion layers additionally contains suspended in the hydrophilic colloid and interspersed with the latent image forming silver halide grains surface fogged silver halide grains which are spontaneously developable independently of imagewise exposure of the photographic element as though exposed to imaging radiation of maximum intensity. This invention also relates to obtaining a favorable interimage effect by reversal processing the photographic element with a silver halide solvent incorporated in the black-and-white developer solution.
Inventors
- 👤 Nicholas H. Groet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
157 words
In a process of forming a photographic element capable of forming a reversal image comprising providing a support, and coating onto the support two silver halide emulsion layer units primarily responsive to a different portion of the visible spectrum upon imagewise exposure of said photographic element and positioned to permit iodide ion migration therebetween upon development, each of said emulsion layer units containing silver halide grains capable of forming a latent image upon imagewise exposure and a hydrophilic colloid suspending said grains, and one of said layer units being comprised of silver haloiodide latent image-forming grains, the improvement comprising in preparing one other of said layer units forming a blended silver halide emulsion by interspersing with said hydrophilic colloid suspended latent image-forming silver halide grains hydrophilic colloid suspended, silver halide grains which are surface fogged as though exposed to imaging radiation of maximum intensity to render them spontaneously developable independent of imagewise exposure of said photographic element.
Claim 2
Dependent Claim
157 words
In a process of forming a photographic element capable of forming a reversal image comprising providing a support, and coating onto the support two silver halide emulsion layer units primarily responsive to a different portion of the visible spectrum upon imagewise exposure of said photographic element and positioned to permit iodide ion migration therebetween upon development, each of said emulsion layer units containing silver halide grains capable of forming a latent image upon imagewise exposure and a hydrophilic colloid suspending said grains, and one of said layer units being comprised of silver haloiodide latent image-forming grains, the improvement comprising in preparing one other of said layer units forming a blended silver halide emulsion by interspersing with said hydrophilic colloid suspended latent image-forming silver halide grains hydrophilic colloid suspended, silver halide grains which are surface fogged as though exposed to imaging radiation of maximum intensity to render them spontaneously developable independent of imagewise exposure of said photographic element.
Claim 3
Dependent Claim
29 words
A process of forming a photographic element capable of forming a reversal image according to claim 1 wherein at least said one other layer unit contains a photographic coupler.
Claim 4
Dependent Claim
27 words
A process of forming a photographic element capable of forming a reversal image according to claim 2 wherein said one other layer unit contains a magenta-dye-forming coupler.
Claim 5
Dependent Claim
33 words
A process of forming a photographic element capable of forming a reversal image according to claim 1 additionally including an antifoggant in said emulsion layer unit containing said surface fogged silver halide grains.
Claim 6
Dependent Claim
34 words
A process of forming a photographic element capable of forming a reversal image according to claim 1 wherein said one layer unit and said one other layer unit are adjacent silver halide emulsion layers.
Claim 7
Dependent Claim
51 words
A process of forming a photographic element capable of forming a reversal image according to claim 1 wherein said one other layer unit contains from 0.05 to 50 percent of said surface fogged silver halide grains, based on the total weight of silver halide present in said one other layer unit.
Claim 8
Dependent Claim
51 words
A process of forming a photographic element capable of forming a reversal image according to claim 6 wherein said one other layer unit contains from 0.1 to 25 percent of said surface fogged silver halide grains, based on the total weight of silver halide present in said one other layer unit.
Claim 9
Dependent Claim
51 words
A process of forming a photographic element capable of forming a reversal image according to claim 7 wherein said one other layer unit contains from 0.5 to 10 percent of said surface fogged silver halide grains, based on the total weight of silver halide present in said one other layer unit.
Claim 10
Dependent Claim
30 words
A process of forming a photographic element capable of forming a reversal image according to claim 1 wherein said silver halide emulsion layer units each contain silver haloiodide emulsion layers.
Claim 11
Dependent Claim
169 words
In a process of forming a photographic element capable of forming a color reversal image comprising providing a support, and coating onto the support three silver haloiodide hydrophilic colloid emulsion imaging layers units chosen and arranged to be each primarily responsive upon imagewise exposure of said photographic element to a different one of the blue, green and red thirds of the visible spectrum and to permit iodide migration therebetween upon development, each of said emulsion layer units containing silver halide grains capable of forming a latent image upon imagewise exposure and a hydrophilic colloid suspending said grains, the improvement comprising in preparing at least one of said emulsion layer units forming a blended silver halide emulsion by interspersing with hydrophilic colloid suspended latent image forming silver haloiodide grains hydrophilic colloid suspended, relatively fine silver halide grains which are of substantially uniform grain size and are surface fogged as though exposed to imaging radiation of maximum intensity to render them spontaneously developable independent of imagewise exposure of said photographic element.
Claim 12
Dependent Claim
169 words
In a process of forming a photographic element capable of forming a color reversal image comprising providing a support, and coating onto the support three silver haloiodide hydrophilic colloid emulsion imaging layers units chosen and arranged to be each primarily responsive upon imagewise exposure of said photographic element to a different one of the blue, green and red thirds of the visible spectrum and to permit iodide migration therebetween upon development, each of said emulsion layer units containing silver halide grains capable of forming a latent image upon imagewise exposure and a hydrophilic colloid suspending said grains, the improvement comprising in preparing at least one of said emulsion layer units forming a blended silver halide emulsion by interspersing with hydrophilic colloid suspended latent image forming silver haloiodide grains hydrophilic colloid suspended, relatively fine silver halide grains which are of substantially uniform grain size and are surface fogged as though exposed to imaging radiation of maximum intensity to render them spontaneously developable independent of imagewise exposure of said photographic element.
Claim 13
Dependent Claim
37 words
A process of forming a photographic element according to claim 10 wherein said emulsion layer units responsive within the blue, green and red thirds of the visible spectrum contain yellow-dye-forming couplers, magenta-dye-forming couplers and cyan-dye-forming couplers, respectively.
Claim 14
Dependent Claim
27 words
A process of forming a photographic element according to claim 10 additionally including an antifoggant in said emulsion layer unit containing said surface fogged silver halide grains.
Claim 15
Dependent Claim
32 words
A process of forming a photographic element according to claim 10 wherein said surface fogged silver halide grains are no larger than the imaging silver halide grains with which they are blended.
Claim 16
Dependent Claim
48 words
A process of forming a photographic element according to claim 10 wherein said surface fogged silver halide grains are present in an concentration of from 0.1 to 25 percent, based on the total weight of silver halide present in said emulsion layer unit in which they are blended.
Claim 17
Dependent Claim
189 words
In a process of forming a photographic element capable of forming a color reversal photographic image comprising providing a photographic support, and coating onto the support, in the order recited, a slower red sensitized negative working gelatino-silver bromoiodide emulsion layer, a faster red sensitized negative working gelatino-silver bromoiodide emulsion layer, a gelatin interlayer, a slower green sensitized negative working gelatino-silver bromoiodide emulsion layer, a faster green sensitized negative working gelatino-silver bromoiodide emulsion layer, a gelatin interlayer including dispersed therein means to filter blue light, a slower blue sensitive negative working gelatino-silver bromoiodide emulsion layer, and a faster blue sensitive negative working gelatino-silver bromoiodide emulsion layer, the improvement comprising in preparing at least one of said emulsion layers blending therein an emulsion of gelatin and relatively fine silver halide grains which are of substantially uniform grain size and are surface fogged as though exposed to imaging radiation of maximum intensity and which are capable of providing physical development sites regardless of imaging exposure thereof, said surface fogged silver halide grains being present in an amount sufficient to provide a favorable interimage effect upon polychromatic imaging exposure of said photographic element.
Claim 18
Dependent Claim
189 words
In a process of forming a photographic element capable of forming a color reversal photographic image comprising providing a photographic support, and coating onto the support, in the order recited, a slower red sensitized negative working gelatino-silver bromoiodide emulsion layer, a faster red sensitized negative working gelatino-silver bromoiodide emulsion layer, a gelatin interlayer, a slower green sensitized negative working gelatino-silver bromoiodide emulsion layer, a faster green sensitized negative working gelatino-silver bromoiodide emulsion layer, a gelatin interlayer including dispersed therein means to filter blue light, a slower blue sensitive negative working gelatino-silver bromoiodide emulsion layer, and a faster blue sensitive negative working gelatino-silver bromoiodide emulsion layer, the improvement comprising in preparing at least one of said emulsion layers blending therein an emulsion of gelatin and relatively fine silver halide grains which are of substantially uniform grain size and are surface fogged as though exposed to imaging radiation of maximum intensity and which are capable of providing physical development sites regardless of imaging exposure thereof, said surface fogged silver halide grains being present in an amount sufficient to provide a favorable interimage effect upon polychromatic imaging exposure of said photographic element.
Claim 19
Dependent Claim
27 words
A process of forming a photographic element according to claim 15 wherein said surface fogged silver halide grains are located in said slower green sensitized emulsion layer.
Claim 20
Dependent Claim
27 words
A process of forming a photographic element according to claim 16 wherein said surface fogged silver halide grains are located in said faster green sensitized emulsion layer.
Claim 21
Dependent Claim
51 words
A process of forming a photographic element according to claim 15 wherein said surface fogged silver halide grains are present in said slower green sensitized emulsion layer in a concentration of from 0.5 to 10 percent, based on the total weight of silver halide present in said slower green emulsion layer.
Claim 22
Dependent Claim
106 words
A process of forming a photographic element according to claim 15 wherein said slower green sensitized negative working gelatino-silver bromoiodide emulsion layer contains a magenta-dye-forming coupler and from 0.5 to 10 percent, based on the total weight of silver halide present in said layer, of relatively fine silver halide grains which are of substantially uniform grain size and are surface fogged as though exposed to imaging radiation of maximum intensity and capable of providing physical development sites independent of imaging exposure, said surface fogged silver halide grains being gelatin emulsified and surface fogged when blended with latent image-forming silver bromoiodide grains of said gelatino-silver bromoiodide emulsion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |