Patent US4366236A successfully refreshed from Google Patents.
US4366236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1981-03-05
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Granted: 1982-12-28
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Expires: 2001-03-05
Abstract
Abstract A diffusion transfer color photographic material having an improved interlayer between two silver halide photographic emulsion layers formed on a support. The interlayer contains a mixture of hydroquinone derivatives having solidifying points lower than 100 DEG C. and a water-insoluble organic solvent-soluble homopolymer or copolymer dispersed in a hydrophilic organic colloid.
Inventors
- 👤 Osamu Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:04
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/396; G03C7/39208; G03C7/39212; G03C7/39216; G03C8/00; G03C8/42; G03C8/52
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
A photographic material comprising: a support; a plurality of silver halide photographic emulsion layers on said support, said layers capable of forming silver images by processing with an alkaline processing composition in the presence of a silver halide developing agent after light-exposure; an interlayer disposed between said silver halide photographic emulsion layers, said interlayer comprising a mixture of hydroquinone derivatives having a solidifying point below 100° C., and a water-insoluble organic solvent-soluble homopolymer or copolymer comprising a main chain or a side chain which includes a recurring unit, said recurring unit including a ##STR21## combined particles of said derivatives and said homopolymer or copolymer dispersed in a hydrophilic organic colloid.
Claim 2
Dependent Claim
110 words
A photographic material comprising: a support; a plurality of silver halide photographic emulsion layers on said support, said layers capable of forming silver images by processing with an alkaline processing composition in the presence of a silver halide developing agent after light-exposure; an interlayer disposed between said silver halide photographic emulsion layers, said interlayer comprising a mixture of hydroquinone derivatives having a solidifying point below 100° C., and a water-insoluble organic solvent-soluble homopolymer or copolymer comprising a main chain or a side chain which includes a recurring unit, said recurring unit including a ##STR21## combined particles of said derivatives and said homopolymer or copolymer dispersed in a hydrophilic organic colloid.
Claim 3
Dependent Claim
84 words
A photographic material as claimed in claim 1, wherein said silver halide photographic emulsion layers are closely connected with a dye-releasing redox compound capable of releasing a diffusible dye, said dye being diffusible into an image-receiving layer in order to form a transferred image, said releasing brought about by a redox reaction with an oxidation product of said silver halide developing agent formed by processing said photographic material with an alkaline processing composition in the presence of said silver halide developing agent after light-exposure.
Claim 4
Dependent Claim
52 words
A photographic material as claimed in claim 1, wherein said silver halide photographic emulsion layers are capable of forming dye images by processing said photographic material with an alkaline processing composition in the presence of an aromatic binary amine as said silver halide developing agent, and dye image forming couplers after light-exposure.
Claim 5
Dependent Claim
35 words
A photographic material as claimed in claim 1, wherein said mixture of hydroquinone derivatives possesses a color mixing inhibiting property, is substantially incapable of developing silver halide and has a solidifying point below 80° C.
Claim 6
Dependent Claim
24 words
A photographic material as claimed in claim 4, wherein said mixture of hydroquinone derivatives is in a liquid or waxy state at room temperature.
Claim 7
Dependent Claim
20 words
A photographic material as claimed in claim 1, wherein said hydroquinone derivative mixture is an eutectic mixture of branched alkylhydroquinones.
Claim 8
Dependent Claim
50 words
A photographic material as claimed in claim 1, wherein said hydroquinone derivative mixture is a mixture of hydroquinone compounds each having two tertiary alkyl groups having 15 carbon atoms at the 2- and 5-positions or the 2- and 6-positions of the benzene ring or an isomer mixture of secondary dodecylhydroquinones.
Claim 9
Dependent Claim
95 words
A photographic material as claimed in claim 1, wherein said hydroquinone derivative mixture is a mixture of isomers represented by the following general formula (I), (II), (III), (IV), (V) or (VI) ##STR22## wherein X 1 , X 2 and X 3 , which may be the same or different, each represents halogen atom, an aliphatic group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, or arylthio group; said X 1 and X 2 may form a condensed ring with each other; and R represents an aliphatic group or an aryl group.
Claim 10
Dependent Claim
22 words
A photographic material as claimed in claim 8, wherein said hydroquinone derivative mixture is substantially devoid of dye residue of precursors thereof.
Claim 11
Dependent Claim
89 words
A composition of matter suitable for use as an interlayer in a multilayer photographic film which generates silver images by the release of diffusible dyes by the redox reaction, comprising: a mixture of hydroquinone derivatives having a softening point below 100° C.; and a water-insoluble organic solvent-soluble homopolymer or copolymer comprising a main chain or a side chain including a recurring unit, said recurring unit including a ##STR23## wherein said hydroquinone derivatives and said homopolymer or copolymer form a combined particle which is dispersed in a hydrophilic organic colloid.
Claim 12
Dependent Claim
89 words
A composition of matter suitable for use as an interlayer in a multilayer photographic film which generates silver images by the release of diffusible dyes by the redox reaction, comprising: a mixture of hydroquinone derivatives having a softening point below 100° C.; and a water-insoluble organic solvent-soluble homopolymer or copolymer comprising a main chain or a side chain including a recurring unit, said recurring unit including a ##STR23## wherein said hydroquinone derivatives and said homopolymer or copolymer form a combined particle which is dispersed in a hydrophilic organic colloid.
References Cited (Backward Citations)
US4267250A
Cited
US4293641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |