US3854953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct positive-type multi-layer light-sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1972-04-20
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Granted: 1974-12-17
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Expires: 1992-04-20
Abstract
Abstract A direct positive type photographic material having a high information packing capacity, which is in particular, a multilayer direct positive-type light-sensitive material comprising, on a suitable support member, at least two emulsion layers with the emulsion layers being selected from (A) a chemically fogged direct positive-type emulsion in which at least one of a halogen acceptor and an electron acceptor is adsorbed on the silver halide grains having free electron trapping nuclei in the grains, (B) a chemically fogged direct positive-type emulsion in which at least an electron acceptor is adsorbed on the silver halide grains substantially free from positive hole trapping nuclei in the grains, and (C) a chemically fogged direct positive-type emulsion in which at least a halogen acceptor is adsorbed on the silver halide grains having free electron trapping nuclei in the grains but substantially free from positive hole trapping nuclei in the grains, said emulsion layers being composed of the same type emulsion layers or different type emulsion layers having an intermediate layer therebetween.
Inventors
- 👤 K Shiba
- 👤 A Sato
- 👤 H Amano
- 👤 H Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C1/48515; G03C1/48523
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
227 words
A DIRECT POSITIVE-TYPE MULTI-LAYER LIGHT-SENSITIVE SILVER HALIDE MATERIAL HAVING HIGH INFORMATION PACKAGING CAPACITY COMPRISING A SUPPORT HAVING THEREON AT LEAST TWO EMULSION LAYERS SELECTED FROM THE GROUP CONSISTING OF (A) A CHEMICALLY FOGGED DIRECT POSITIVE-TYPE LIGHT-SENSITIVE SILVER HALIDE EMULSION IN WHICH AT LEAST ONE OF A HALOGEN ACCEPTOR AND AN ELECTRON ACCEPTOR IS ADSORBED ON THE SILVER HALIDE GRAINS, AND GRAINS HAVING FREE ELECTRON TRAPPING NUCLEI THEREIN, (B) A CHEMICALLY FOGGED DIRECT POSITIVE-TYPE LIGHT-SENSITIVE HALIDE EMULSION IN WHICH AT LEAST AN ELECTRON ACCEPTOR IS ADSORBED ON THE SILVER HALIDE GRAINS, SAID GRAINS BEING SUBSTANTIALLY FREE FROM POSITIVE HOLE TRAPPING NUCLEI THEREIN AND (C) A CHEMICALLY FOGGING DIRECT POSITIVE-TYPE LIGHT-SENSITIVE SILVER HALIDE EMULSION IN WHICH AT LEAST A HALOGEN ACCEPTOR IS ADSORBED ON THE SILVER HALIDE GRAINS, SAID GRAINS HAVING FREE ELECTRON TRAPPING NUCLEI THEREIN BUT BEING SUBSTANTIALLY FREE FROM POSITIVE HOLE TRAPPING NUCLEI THEREIN, SAID EMULSION EACH HAVING A DIFFERENT SENSITIZED WAVELENGTH REGION, SAID EMULSION LAYERS BEING THE SAME TYPE EMULSION LAYERS OR DIFFERENT TYPE EMULSION LAYERS HAVING THEREBETWEEN AN INTERMEDIATE LAYER PREVENTING DIFFUSION OR INTERACTION OF SAID ELECTRON ACCEPTOR OR HALOGEN ACCEPTOR BETWEEN SAID EMULSION LAYERS, THE HALOGEN ACCEPTOR OR ELECTRON ACCEPTOR IN AN EMULSION LAYER DIFFERING FROM THE HALOGEN ACCEPTOR OR ELECTRON ACCEPTOR IN AN EMULSION LAYER SENSITIZED TO A DIFFERENT WAVELENGTH REGION, SAID INTERMEDIATE LAYER ILLUSTRATING SUBSTANTIALLY NO DESENSITIZING EFFECT ON SAID EMULSION LAYERS.
Claim 2
Dependent Claim
227 words
A DIRECT POSITIVE-TYPE MULTI-LAYER LIGHT-SENSITIVE SILVER HALIDE MATERIAL HAVING HIGH INFORMATION PACKAGING CAPACITY COMPRISING A SUPPORT HAVING THEREON AT LEAST TWO EMULSION LAYERS SELECTED FROM THE GROUP CONSISTING OF (A) A CHEMICALLY FOGGED DIRECT POSITIVE-TYPE LIGHT-SENSITIVE SILVER HALIDE EMULSION IN WHICH AT LEAST ONE OF A HALOGEN ACCEPTOR AND AN ELECTRON ACCEPTOR IS ADSORBED ON THE SILVER HALIDE GRAINS, AND GRAINS HAVING FREE ELECTRON TRAPPING NUCLEI THEREIN, (B) A CHEMICALLY FOGGED DIRECT POSITIVE-TYPE LIGHT-SENSITIVE HALIDE EMULSION IN WHICH AT LEAST AN ELECTRON ACCEPTOR IS ADSORBED ON THE SILVER HALIDE GRAINS, SAID GRAINS BEING SUBSTANTIALLY FREE FROM POSITIVE HOLE TRAPPING NUCLEI THEREIN AND (C) A CHEMICALLY FOGGING DIRECT POSITIVE-TYPE LIGHT-SENSITIVE SILVER HALIDE EMULSION IN WHICH AT LEAST A HALOGEN ACCEPTOR IS ADSORBED ON THE SILVER HALIDE GRAINS, SAID GRAINS HAVING FREE ELECTRON TRAPPING NUCLEI THEREIN BUT BEING SUBSTANTIALLY FREE FROM POSITIVE HOLE TRAPPING NUCLEI THEREIN, SAID EMULSION EACH HAVING A DIFFERENT SENSITIZED WAVELENGTH REGION, SAID EMULSION LAYERS BEING THE SAME TYPE EMULSION LAYERS OR DIFFERENT TYPE EMULSION LAYERS HAVING THEREBETWEEN AN INTERMEDIATE LAYER PREVENTING DIFFUSION OR INTERACTION OF SAID ELECTRON ACCEPTOR OR HALOGEN ACCEPTOR BETWEEN SAID EMULSION LAYERS, THE HALOGEN ACCEPTOR OR ELECTRON ACCEPTOR IN AN EMULSION LAYER DIFFERING FROM THE HALOGEN ACCEPTOR OR ELECTRON ACCEPTOR IN AN EMULSION LAYER SENSITIZED TO A DIFFERENT WAVELENGTH REGION, SAID INTERMEDIATE LAYER ILLUSTRATING SUBSTANTIALLY NO DESENSITIZING EFFECT ON SAID EMULSION LAYERS.
Claim 3
Dependent Claim
24 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1 wherein said material comprises at least two layers with an intermediate layer therebetween.
Claim 4
Dependent Claim
43 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said material comprises at least two layers of the same type direct positive type light-sensitive silver halide emulsion selected from the group consisting of emulsion (A), emulsion (B) and emulsion (C).
Claim 5
Dependent Claim
38 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said material comprises at least two layers in which neither a layer of emulsion (A) nor emulsion (C) is present on a layer of emulsion (B).
Claim 6
Dependent Claim
52 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said material comprises at least two layers of different types of direct positive-type light-sensitive silver halide emulsions, said different types being emulsion (A) and emulsion (B) or emulsion (B) and emulsion (C), said layers being obtained by simultaneous multi-layer coating.
Claim 7
Dependent Claim
34 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said material comprises at least two layers and where different type emulsion layers are present together an intermediate layer is contained therebetween.
Claim 8
Dependent Claim
52 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said material comprises at least three emulsion layers with at leaSt one intermediate layer, said emulsion layers containing a blue-sensitive emulsion containing a yellow coupler, a green-sensitive emulsion containing a magenta coupler and a red-sensitive emulsion containing a cyan coupler.
Claim 9
Dependent Claim
32 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said material comprises at least two adjacent emulsion layers of the same emulsion type but different in direct reversal sensitivity.
Claim 10
Dependent Claim
64 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said material comprises at least two emulsion layers with an intermediate layer, said intermediate layer having incorporated therein a negative-type silver halide light-sensitive emulsion having a suitable spectral sensitivity and a corresponding amount of a color coupler whereby automatic masking of the unnecessary absorption of light by a direct positive image occurs.
Claim 11
Dependent Claim
30 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said halogen acceptor is a sensitizing dye of the M-band type in the 600 - 720 nm region.
Claim 12
Dependent Claim
54 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said halogen acceptor is a sensitizing dye having a cathodic polarographic half-wave potential more negative than -0.7 volts and wherein the difference between the cathodic polarographic half-wave potential and the anodic polarographic half-wave potential of said dye is greater than 1.5 volts.
Claim 13
Dependent Claim
31 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said electron acceptor is a desensitizing dye compound having a cathodic polarographic half-wave potential more positive than 1.0 volt.
Claim 14
Dependent Claim
47 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said halogen acceptor and said electron acceptor are each present in said emulsion at a level ranging from about 1 X 10 6 to about 1 X 10 3 mole per mole of silver halide.
Claim 15
Dependent Claim
27 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said intermediate layer comprises an emulsion layer having fine grain silver halide or silica therein.
Claim 16
Dependent Claim
30 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 14, wherein said intermediate layer additionally contains a high molecular weight anionic organic compound or an anionic surface active agent.
Claim 17
Dependent Claim
24 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 14, wherein said intermediate layer contains a color coupler whereby auto masking is provided.
Claim 18
Dependent Claim
28 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said electron acceptor is a compound selected from the group of compounds having the general formulas
Claim 19
Dependent Claim
24 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 14, wherein said intermediate layer comprises an emulsion layer having fine grain silver halide.
Claim 20
Dependent Claim
25 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 18, wherein said fine grain silver halide has a size less than about 0.2 microns.
Claim 21
Dependent Claim
22 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said intermediate layer comprises an emulsion layer having silica therein.
Claim 22
Dependent Claim
20 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said emulsion layers are different type emulsion layers.
Claim 23
Dependent Claim
29 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein emulsion (A) is capable of directly yielding a positive image without the electron acceptor or halogen acceptor.
Claim 24
Dependent Claim
43 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein emulsion (B) contains substantially no free electron trapping nuclei and is not capable of yielding a positive image without the electron acceptor, further wherein emulsion (B) is free from halogen acceptor.
Claim 25
Dependent Claim
19 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein emulsion (A) contains positive hole trapping nuclei.
Claim 26
Dependent Claim
38 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 1, wherein said material comprises at least two layers of different types of direct positive-type light-sensitive silver halide emulsions, said different types being emulsion (A) and emulsion (C).
Claim 27
Dependent Claim
31 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 17, wherein said electron acceptor is a desensitizing dye compound having a cathodic polarographic half-wave potential more positive than 1.0 volt.
Claim 28
Dependent Claim
22 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 17, wherein said electron acceptor is a compound of general formula (Ia).
Claim 29
Dependent Claim
22 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 17, wherein said electron acceptor is a compound of general formula (Ib).
Claim 30
Dependent Claim
22 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 17, wherein said electron acceptor is a compound of general formula (II).
Claim 31
Dependent Claim
22 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 17, wherein said electron acceptor is a compound of general formula (III).
Claim 32
Dependent Claim
22 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 17, wherein said electron acceptor is a compound of general formula (V).
Claim 33
Dependent Claim
31 words
The direct positive-type multi-layer light-sensitive silver halide material of claim 31, wherein Z4 and Z1 are selected from the group consisting of a naphthoxazole, indolenine, benzothiazole, Alpha -naphthothiazole or quinoline nucleus.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |