US3719488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel photographic processes and products
Assignee: Polaroid Corp
•
Filing: 1971-06-21
•
Granted: 1973-03-06
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Expires: 1991-06-21
Abstract
Abstract This invention relates to photographic processes for producing color images by reacting (a) a dye intermediate containing a carbonyl group and selected from an aldehyde and a ketone with (b) a color-forming reagent to form a complete dye wherein an imagewise distribution of at least one of said dye intermediate and said color-forming reagent is formed as a function of developing an exposed silver halide layer followed by reacting the color-forming reagent with the carbonyl group of the dye intermediate to form a corresponding imagewise distribution of a complete dye. In a preferred embodiment, a sulfur-nitrogen compound capable of undergoing cleavage in the presence of silver ions and/or soluble silver complex made available as a function of development is used to release one or both of the dye-forming reagents in an imagewise distribution corresponding to said silver ions and/or said complex.
Inventors
- 👤 L Locatell
- 👤 F Meneghini
- 👤 H Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:07
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
97 words
A photographic process for preparing a dye image by reacting (a) a dye intermediate containing a carbonyl group selected from an aldehyde and a ketone with (b) a color-forming reagent to form a complete dye which comprises the steps of developing an exposed silver halide layer with an aqueous alkaline processing composition; forming as a function of development, an imagewise distribution of at least one of said dye intermediate and said color-forming reagent; and thereafter reacting said color-forming reagent with the carbonyl group of said dye intermediate to form a corresponding imagewise distribution of a complete dye.
Claim 2
Dependent Claim
97 words
A photographic process for preparing a dye image by reacting (a) a dye intermediate containing a carbonyl group selected from an aldehyde and a ketone with (b) a color-forming reagent to form a complete dye which comprises the steps of developing an exposed silver halide layer with an aqueous alkaline processing composition; forming as a function of development, an imagewise distribution of at least one of said dye intermediate and said color-forming reagent; and thereafter reacting said color-forming reagent with the carbonyl group of said dye intermediate to form a corresponding imagewise distribution of a complete dye.
Claim 3
Dependent Claim
34 words
A photographic process as defined in claim 1 wherein an imagewise distribution of a dye intermediate containing a carbonyl group selected from an aldehyde and a ketone is formed as a function of development.
Claim 4
Dependent Claim
15 words
A photographic process as defined in claim 2 wherein said dye intermediate is an aldehyde.
Claim 5
Dependent Claim
16 words
A photographic process as defined in claim 1 wherein said color-forming reagent is a methylene coupler.
Claim 6
Dependent Claim
149 words
A photographic process for preparing a dye image by reacting (a) a dye intermediate containing a carbonyl group selected from an aldehyde and a ketone with (b) a color-forming reagent to form a complete dye including the steps of developing an exposed silver halide layer with an aqueous alkaline processing composition; forming in undeveloped areas an imagewise distribution of silver ions and/or soluble silver complex; contacting said imagewise distribution of silver ions and/or said complex with a sulfur-nitrogen compound capable of undergoing cleavage in the presence of said silver ions and/or said complex to liberate a dye intermediate containing a carbonyl group selected from an aldehyde and a ketone and thereby forming a corresponding imagewise distribution of said dye intermediate; and reacting said color-forming reagent with the carbonyl group of said dye intermediate to form a complete dye, said sulfur-nitrogen compound containing the group -S-X-N or wherein X is
Claim 7
Dependent Claim
149 words
A photographic process for preparing a dye image by reacting (a) a dye intermediate containing a carbonyl group selected from an aldehyde and a ketone with (b) a color-forming reagent to form a complete dye including the steps of developing an exposed silver halide layer with an aqueous alkaline processing composition; forming in undeveloped areas an imagewise distribution of silver ions and/or soluble silver complex; contacting said imagewise distribution of silver ions and/or said complex with a sulfur-nitrogen compound capable of undergoing cleavage in the presence of said silver ions and/or said complex to liberate a dye intermediate containing a carbonyl group selected from an aldehyde and a ketone and thereby forming a corresponding imagewise distribution of said dye intermediate; and reacting said color-forming reagent with the carbonyl group of said dye intermediate to form a complete dye, said sulfur-nitrogen compound containing the group -S-X-N or wherein X is
Claim 8
Dependent Claim
22 words
A process as defined in claim 5 wherein said processing composition is an aqueous alkaline solution of a silver halide developing agent.
Claim 9
Dependent Claim
17 words
A process as defined in claim 6 wherein said processing composition additionally contains a silver halide solvent.
Claim 10
Dependent Claim
41 words
A process as defined in claim 7 wherein a sheetlike element is in superposed relationship with a photosensitive element containing said silver halide layer and said processing composition is distributed in a substantially uniform layer between said photosensitive and sheetlike elements.
Claim 11
Dependent Claim
19 words
A process as defined in claim 8 wherein said compound is present in a layer in said sheetlike element.
Claim 12
Dependent Claim
17 words
A process as defined in claim 9 wherein said complete dye is non-diffusible in said processing composition.
Claim 13
Dependent Claim
19 words
A process as defined in claim 10 wherein said color-forming reagent is present in said layer containing said compound.
Claim 14
Dependent Claim
13 words
A process as defined in claim 11 wherein said compound contains the group
Claim 15
Dependent Claim
10 words
A process as defined in claim 12 wherein X is
Claim 16
Dependent Claim
31 words
A process as defined in claim 13 wherein said compound is a cyclic compound having a ring system containing up to 20 members and said group is included in the ring.
Claim 17
Dependent Claim
22 words
A process as defined in claim 14 wherein said compound is a thiazolidine compound and the dye intermediate releaseD is an aldehyde.
Claim 18
Dependent Claim
15 words
A process as defined in claim 15 wherein said color-forming reagent is a methylene coupler.
Claim 19
Dependent Claim
21 words
A process as defined in claim 16 wherein said thiazolidine compound is 2-(p-dimethylaminophenyl)-3-propylthiazolidine and said dye intermediate released is p-dimethylaminophenyl benzaldehyde.
Claim 20
Dependent Claim
12 words
A process as defined in claim 17 wherein said coupler is malononitrile.
Claim 21
Dependent Claim
12 words
A process as defined in claim 17 wherein said coupler is N-ethyloxindole.
Claim 22
Dependent Claim
13 words
A process as defined in claim 17 wherein said coupler is Alpha -cyanoacetanilide.
Claim 23
Dependent Claim
20 words
A process as defined in claim 16 wherein said thiazolidine compound is 2,2''-(N-butylthiazolidyl) methane and said coupler is 1,3-dimethylthiobarbituric acid.
Claim 24
Dependent Claim
17 words
A process as defined in claim 9 wherein said color-forming reagent is present in said processing composition.
Claim 25
Dependent Claim
21 words
A process as defined in claim 22 wherein said compound contains the group and said color-forming reagent is a methylene coupler.
Claim 26
Dependent Claim
20 words
A process as defined in claim 23 wherein said compound is 2-(p-dimethylaminophenyl)-3-propylthiazolidine and said coupler is N-methyl- Alpha -picolinium tosylate.
Claim 27
Dependent Claim
29 words
A process as defined in claim 5 wherein said compound is present in a layer in said photosensitive element and the dye formed is non-diffusible in said processing composition.
Claim 28
Dependent Claim
19 words
A process as defined in claim 25 wherein said color-forming reagent is present in said layer containing said compound.
Claim 29
Dependent Claim
17 words
A process as defined in claim 25 wherein said color-forming reagent is present in said processing composition.
Claim 30
Dependent Claim
47 words
A process as defined in claim 8 wherein said dye formed is diffusible in said processing composition and said sheetlike element comprises a dyeable stratum and at least a portion of said diffusible dye is transferred to said dyeable stratum to form a color transfer image thereon.
Claim 31
Dependent Claim
19 words
A process as defined in claim 28 wherein said color-forming reagent is present is said layer containing said compound.
Claim 32
Dependent Claim
146 words
A photographic product comprising a photosensitive element comprising a plurality of layers including a support; a silver halide emulsion in a layer on said support; in a layer on the same side of said support as said silver halide emulsion, a sulfur-nitrogen compound capable of undergoing cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex to liberate a substantially colorless dye intermediate containing a carbonyl group selected from an aldehyde and a ketone in an imagewise distribution corresponding to said imagewise distribution of silver ions and/or said complex; and a color-forming reagent in a layer on the same side of said support as said layer of sulfur-nitrogen compound, said color-forming reagent being capable of reacting with the carbonyl group of said dye intermediate to form a complete dye, and said sulfur-nitrogen compound containing the group -S-X-N or wherein X is
Claim 33
Dependent Claim
146 words
A photographic product comprising a photosensitive element comprising a plurality of layers including a support; a silver halide emulsion in a layer on said support; in a layer on the same side of said support as said silver halide emulsion, a sulfur-nitrogen compound capable of undergoing cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex to liberate a substantially colorless dye intermediate containing a carbonyl group selected from an aldehyde and a ketone in an imagewise distribution corresponding to said imagewise distribution of silver ions and/or said complex; and a color-forming reagent in a layer on the same side of said support as said layer of sulfur-nitrogen compound, said color-forming reagent being capable of reacting with the carbonyl group of said dye intermediate to form a complete dye, and said sulfur-nitrogen compound containing the group -S-X-N or wherein X is
Claim 34
Dependent Claim
18 words
A product as defined in claim 30 wherein said color-forming reagent is in said layer containing said compound.
Claim 35
Dependent Claim
14 words
A product as defined in claim 31 wherein said compound contains the group .
Claim 36
Dependent Claim
13 words
A product as defined in claim 32 wherein said compound is a thiazolidine.
Claim 37
Dependent Claim
15 words
A product as defined in claim 31 wherein said color-forming reagent is a methylene coupler.
Claim 38
Dependent Claim
184 words
A photographic product comprising first and second sheetlike elements, said first element comprising a plurality of layers including a support; a photosensitive silver halide emulsion in a layer on said support; in a layer in one of said first and second sheet-like elements, a sulfur-nitrogen compound capable of under-going cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex to liberate a substantially colorless dye intermediate containing a carbonyl group selected from an aldehyde and a ketone in an imagewise distribution corresponding to said distribution of silver ions and/or said complex; means for applying a photographic processing composition comprising an aqueous alkaline solution of a silver halide developing agent and a silver halide solvent in a substantially uniform layer between said emulsion layer and said second sheetlike element in superposed relationship therewith; and a color-forming reagent in one of said sheetlike elements or in said processing composition, said color-forming reagent being capable of reacting with the carbonyl group of said dye intermediate to form a complete dye, and said sulfur-nitrogen compound containing the group -S-X-N or wherein X is
Claim 39
Dependent Claim
184 words
A photographic product comprising first and second sheetlike elements, said first element comprising a plurality of layers including a support; a photosensitive silver halide emulsion in a layer on said support; in a layer in one of said first and second sheet-like elements, a sulfur-nitrogen compound capable of under-going cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex to liberate a substantially colorless dye intermediate containing a carbonyl group selected from an aldehyde and a ketone in an imagewise distribution corresponding to said distribution of silver ions and/or said complex; means for applying a photographic processing composition comprising an aqueous alkaline solution of a silver halide developing agent and a silver halide solvent in a substantially uniform layer between said emulsion layer and said second sheetlike element in superposed relationship therewith; and a color-forming reagent in one of said sheetlike elements or in said processing composition, said color-forming reagent being capable of reacting with the carbonyl group of said dye intermediate to form a complete dye, and said sulfur-nitrogen compound containing the group -S-X-N or wherein X is
Claim 40
Dependent Claim
13 words
A product as defined in claim 35 wherein said compound contains the group
Claim 41
Dependent Claim
32 words
A product as defined in claim 35 wherein said compound is present in said first element in a layer on the same side of said support as said silver halide emulsion layer.
Claim 42
Dependent Claim
19 words
A product as defined in claim 35 wherein said compound is present in a layer in said second element.
Claim 43
Dependent Claim
19 words
A product as defined in claim 35 wherein said color-forming reagent is present in said layer containing said compound.
Claim 44
Dependent Claim
17 words
A product as defined in claim 35 wherein said color-forming reagent is present in said processing composition.
Claim 45
Dependent Claim
10 words
A product as defined in claim 36 wherein X is
Claim 46
Dependent Claim
31 words
A product as defined in claim 41 wherein said compound is a cyclic compound having a ring system containing up to 20 members and said group is included in the ring.
Claim 47
Dependent Claim
13 words
A product as defined in claim 42 wherein said compound is a thiazolidine.
Claim 48
Dependent Claim
15 words
A product as defined in claim 43 wherein said color-forming reagent is a methylene coupler.
Claim 49
Dependent Claim
12 words
A product as defined in claim 44 wherein said thiazolidine is 2-(p-dimethylaminophenyl)-3-propylthiozolidine.
Claim 50
Dependent Claim
12 words
A product as defined in claim 45 wherein said coupler is malononitrile.
Claim 51
Dependent Claim
13 words
A product as defined in claim 45 wherein said coupler is Alpha -cyanoacetanilide.
Claim 52
Dependent Claim
12 words
A product as defined in claim 45 wherein said coupler is N-ethyloxindole.
Claim 53
Dependent Claim
15 words
A product as defined in claim 45 wherein said coupler is N-methyl- Alpha -picolinium tosylate.
Claim 54
Dependent Claim
19 words
A product as defined in claim 44 wherein said thiazolidine is 2,2''-(N-butylthiazolidyl) methane and said coupler is 1,3-dimethylthiobarbituric acid.
References Cited (Backward Citations)
US3379529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |