US4246333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Development inhibitor precursor and a photographic element containing the same
Assignee: Fujifilm Holdings Corp
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Filing: 1979-04-03
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Granted: 1981-01-20
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Expires: 1999-04-03
Abstract
Abstract A photographic element having on a support at least one silver halide emulsion layer having associated therewith a development inhibitor precursor represented by the formula (I) <IMAGE> (I) wherein A is a phenyl group, a substituted phenyl group or a 5- or 6-membered nitrogen-containing heterocyclic ring; said A splitting together with the sulfur atom in the above molecule from the residue of the molecule to provide a silver halide development inhibitor; R1 is an alkyl group having 1 to 4 carbon atoms; and R2 is a cyano group, a carbamoyl group or the group represented by the formula <IMAGE> wherein R3 is an aryl group.
Inventors
- 👤 Yoshiharu Fuseya
- 👤 Yukio Karino
- 👤 Yoshio Sakakibara
- 👤 Katsusuke Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:46
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39228; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
120 words
A photographic element for the color diffusion transfer process comprising a support having thereon at least one silver halide emulsion layer associated with a development inhibitor precursor represented by the formula ##STR28## wherein Z represents the non-metallic atomic group necessary to complete a 5- or 6-membered heterocyclic ring which may be substituted or condensed with another ring, said heterocyclic rings being capable of splitting together with the sulfur atom of the molecule to provide a silver halide development inhibitor and R 1 represents an alkyl group having 1 to 4 carbon atoms, a dye-image providing material associated with said silver halide emulsion layer, an image-receiving element, an alkaline processing composition, and a neutralizing mechanism for neutralizing said alkaline processing composition.
Claim 2
Dependent Claim
120 words
A photographic element for the color diffusion transfer process comprising a support having thereon at least one silver halide emulsion layer associated with a development inhibitor precursor represented by the formula ##STR28## wherein Z represents the non-metallic atomic group necessary to complete a 5- or 6-membered heterocyclic ring which may be substituted or condensed with another ring, said heterocyclic rings being capable of splitting together with the sulfur atom of the molecule to provide a silver halide development inhibitor and R 1 represents an alkyl group having 1 to 4 carbon atoms, a dye-image providing material associated with said silver halide emulsion layer, an image-receiving element, an alkaline processing composition, and a neutralizing mechanism for neutralizing said alkaline processing composition.
Claim 3
Dependent Claim
92 words
The photographic element of claim 1, wherein said photographic element includes a photosensitive sheet comprising an image-receiving element having on a transparent support an image-receiving layer for fixing diffusible dyes therein, a light reflective layer, a light shielding layer, and a photosensitive element comprising at least one silver halide emulsion layer and a dye image-providing material associated with the silver halide emulsion layer; an alkaline processing composition for developing said photosensitive element after exposure; and a cover sheet comprising a separate support; and a neutralizing mechanism for neutralizing said alkaline processing composition.
Claim 4
Dependent Claim
17 words
The photographic element of claim 2, wherein the development inhibitor precursor is contained in said cover sheet.
Claim 5
Dependent Claim
13 words
The photographic element of claim 2, wherein the development inhibitor precursor is 5-(2-cyano-1-methylethylthio)-1-phenyltetrazole.
Claim 6
Dependent Claim
21 words
The photographic element of claim 2, wherein the silver halide emulsion is an internal latent image-type direct positive silver halide emulsion.
Claim 7
Dependent Claim
27 words
The photographic element of claim 5, wherein the dye image-providing material associated with the internal latent image type direct positive silver halide emulsion is a DDR compound.
Claim 8
Dependent Claim
37 words
The photographic element of claim 1, wherein said development inhibitor precursor is present in an amount of about 10 -4 mol to 5×10 -2 moles per mol of silver halide in the associated silver halide emulsion layer.
Claim 9
Dependent Claim
17 words
The photographic element of claim 1, wherein said development inhibitor precursor is incorporated into an image-receiving layer.
Claim 10
Dependent Claim
30 words
The photographic element of claim 1, wherein said development inhibitor precursor is incorporated into a silver halide emulsion layer or a hydrophilic colloid layer adjacent a silver halide emulsion layer.
Claim 11
Dependent Claim
21 words
The photographic element of claim 1, wherein said development inhibitor precursor is incorporated into a layer containing a dye image-providing material.
Claim 12
Dependent Claim
18 words
The photographic element of claim 2, wherein said development inhibitor precursor is incorporated into said light reflective layer.
Claim 13
Dependent Claim
17 words
The photographic element of claim 3, wherein said development inhibitor precursor is incorporated in a neutralizing layer.
Claim 14
Dependent Claim
18 words
The photographic element of claim 3, wherein said development inhibitor precursor is incorporated in a neutralizing timing layer.
Claim 15
Dependent Claim
97 words
A photographic element comprising a support having thereon at least one silver halide emulsion layer which is associated with a dye image-providing material and which is associated with a development inhibitor precursor represented by the formula ##STR29## wherein Z represents the non-metallic atomic group necessary to complete a 5- or 6-membered heterocyclic ring which may be substituted or condensed with another ring, said heterocyclic rings being capable of splitting together with the sulfur atom of the molecule to provide a silver halide development inhibitor and R 1 represents an alkyl group having 1 to 4 carbon atoms.
Claim 16
Dependent Claim
97 words
A photographic element comprising a support having thereon at least one silver halide emulsion layer which is associated with a dye image-providing material and which is associated with a development inhibitor precursor represented by the formula ##STR29## wherein Z represents the non-metallic atomic group necessary to complete a 5- or 6-membered heterocyclic ring which may be substituted or condensed with another ring, said heterocyclic rings being capable of splitting together with the sulfur atom of the molecule to provide a silver halide development inhibitor and R 1 represents an alkyl group having 1 to 4 carbon atoms.
Claim 17
Dependent Claim
18 words
The photographic element of claim 1, wherein said heterocyclic ring is a tetrazole ring or a phenyltetrazole ring.
Claim 18
Dependent Claim
13 words
The photographic element of claim 14, wherein the development inhibitor precursor is 5-(2-cyano-1-methylethylthio)-1-phenyltetrazole.
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) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |