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US4965169A
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Method for forming a high contrast negative image
Assignee: Fujifilm Holdings Corp
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Filing: 1988-11-07
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Granted: 1990-10-23
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Expires: 2008-11-07
Abstract
Abstract A method for forming a high contrast negative image comprising the steps of: (a) imagewise exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said emulsion layer or other hydrophilic colloid layer containing at least one hydrazine derivative; and (b) developing said exposed silver halide photographic material in an developer solution containing: (1) a dihydroxybenzene developing agent; (2) at least one auxiliary developing agent selected from a 1-phenyl-3-pyrazolidone auxiliary developing agent and a p-aminophenol auxiliary developing agent; (3) at least 0.3 mol per liter of a sulfite; and (4) at least one compound represented by formula (I): ##STR1## wherein Y represents a group capable of adsorbing to silver halide; A represents a divalent linking group; B represents an amino group, an ammonium group or a nitrogen containing heterocyclic group; m is 1, 2 or 3; and n is 0 or 1; to form a high contrast negative image.
Inventors
- 👤 Mitsunori Hirano
- 👤 Masato Hirano
- 👤 Morio Yagihara
- 👤 Hisashi Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
159 words
A method for forming a high contrast negative image comprising the steps of: (a) imagewise exposing a silver halide photographic material comprising a support having thereon at least one light sensitive silver halide emulsion layer, said emulsion layer or other hydrophilic colloid layer containing at least one hydrazine derivative; and (b) developing said exposed silver halide photographic material in a developer solution containing: (1) a dihydroxybenzene developing agent; (2) at least one auxiliary developing agent selected from a 1-phenyl-3-pyrazolidone auxiliary developing agent and a p-aminophenol auxiliary developing agent; (3) at least 0.3 mol per liter of a sulfite; and (4) at least one compound represented by formula (I): ##STR18## wherein Y represents a group capable of adsorbing to silver halide; A represents a divalent linking group; B represents an amino group, an ammonium group or a nitrogen containing heterocyclic group; m is 1, 2 or 3; and n is 0 or 1; to form a high contrast negative image.
Claim 2
Independent Claim
159 words
A method for forming a high contrast negative image comprising the steps of: (a) imagewise exposing a silver halide photographic material comprising a support having thereon at least one light sensitive silver halide emulsion layer, said emulsion layer or other hydrophilic colloid layer containing at least one hydrazine derivative; and (b) developing said exposed silver halide photographic material in a developer solution containing: (1) a dihydroxybenzene developing agent; (2) at least one auxiliary developing agent selected from a 1-phenyl-3-pyrazolidone auxiliary developing agent and a p-aminophenol auxiliary developing agent; (3) at least 0.3 mol per liter of a sulfite; and (4) at least one compound represented by formula (I): ##STR18## wherein Y represents a group capable of adsorbing to silver halide; A represents a divalent linking group; B represents an amino group, an ammonium group or a nitrogen containing heterocyclic group; m is 1, 2 or 3; and n is 0 or 1; to form a high contrast negative image.
Claim 3
Dependent Claim
61 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said group capable of adsorbing to silver halide represented by Y is selected from a substituted or unsubstituted thioamido group, a substituted or unsubstituted mercapto group, a substituted or unsubstituted group containing a disulfide bond, and a substituted or unsubstituted 5-membered or 6-membered nitogen-containing hetrocyclic group.
Claim 4
Dependent Claim
48 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said divalent linking group represented by A is selected from an alikylene group, an alkenylene group, an alkynylene group, an arylene group, --O--, --S--, --NH--, --N═, --CO--, SO 2 -- and combinations thereof.
Claim 5
Dependent Claim
91 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said amino group represented by B is represented by formula (II): ##STR19## wherein R 11 and R 12 , which may be the same or different, each represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group or a substituted or unsubstituted aralkyl group; or R 11 and R 12 are linked to form a saturated heterocyclic ring containing at least one hetero atom selected from oxygen, sulfur and nitrogen.
Claim 6
Dependent Claim
82 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said amino group represented by B is represented by formula (III): ##STR20## wherein R 13 , R 14 and R 15 , which may be the same or different, each represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group or a substituted or unsubstituted aralkyl group; Z.sup.⊖ represents an anion necessary for charge balance; and p is 0 or 1.
Claim 7
Dependent Claim
35 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said nitrogen-containing heterocyclic group represented by B is selected from an imidazolyl group, a pyridyl group and a thiazolyl group.
Claim 8
Dependent Claim
117 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said compound represented by formula (I) is represented by formula (IV): ##STR21## wherein A, B, m and n each is defined as in formula (I); Q represents an atomic group necessary for forming a 5-membered or 6-membered heterocyclic ring containing atoms selected from carbon, nitrogen, oxygen and sulfur, said 5-membered or 6-membered hetrocyclic ring may be condensed with a carbon aromatic ring or a hetrocyclic aromatic ring; l is 0 or 1; and M represents a hydrogen atom, an alkali metal, an ammonium group or a group capable of being replaced by a hydrogen atom or an alkali metal under alkaline conditions.
Claim 9
Dependent Claim
112 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said compound represented by formula (I) is represented by formula (V): ##STR22## wherein A, B, m and n each is defined as in formula (I); Q represents an atomic group necessary for forming a 5-membered or 6-membered heterocyclic ring containing atoms selected from carbon, nitrogen, oxygen and sulfur, said 5-membered or 6-membered hetrocyclic ring may be condensed with a carbon aromatic ring or a hetrocyclic aromatic ring; and M represents a hydrogen atom, an alkali metal, an ammonium group or a group capable of being replaced by a hydrogen atom or a alkali metal under alkaline conditions.
Claim 10
Dependent Claim
151 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said compound represented by formula (I) is represented by formula (VI), (VII), (VIII), (IX), (X) or (XI): ##STR23## wherein A, B, m and n each is defined as in formula (I); M represents a hydrogen atom, an alkali metal, atom an ammonium group or a group capable of being replaced by a hydrogen atom or a alkali metal atom under alkaline conditions; and Z 1 , Z 2 and Z 3 , which may be the same or different, each represents ##STR24## as defined in claim 1, a halogen atom, an alkoxy group having not more than 20 carbon atoms, a hydroxyl group, a hydroxyamono group or a substituted or unsubstituted amono group, provided that at least one of Z 1 , Z 2 and Z 3 represents a group ##STR25## as defined in claim 1.
Claim 11
Dependent Claim
44 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said hydrazine derivative contained in said silver halide photographic material is represented by formula (XII): R.sub.1 --NHNH--CHO (XII) wherein R 1 represents an aliphatic group or an aromatic group.
Claim 12
Dependent Claim
41 words
A method for forming a high contrast negative image as claimed in claim 10, wherein R 1 represents an alkyl group having from 1 to 30 cabon atoms, a single or double ring aryl group or an aromatic unsaturated heterocyclic group.
Claim 13
Dependent Claim
21 words
A method for forming a high contrast negative image as claimed in claim 11, wherein R 1 represents an aryl group.
Claim 14
Dependent Claim
27 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said hydrazine derivative is contained in said light-sensitive silver halide emulsion layer.
Claim 15
Dependent Claim
21 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said dihydroxybenzene developing agent is hydroquinone.
Claim 16
Dependent Claim
22 words
A method for forming a high contrast negative image as claimed in claim 14, wherein said auxiliary developing agent is N-methyl p-aminophenol.
Claim 17
Dependent Claim
82 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said developer solution contains from 1×10 -2 to 1×10 -5 mol per liter of said compound represented by formula (I); from 0.05 to 0.8 mol per liter of said dihydroxybenzene developing agent; from 0.05 to 0.5 mol per liter of said 1-phenyl-3-pyrazolidone auxiliary developing agent; at most 0.06 mol per liter of said p-aminophenol auxiliary developing agent; and at most 1.2 mol per liter of said sulfite.
Claim 18
Dependent Claim
25 words
A method for forming a high contrast negative image as claimed in claim 1, wherein said developer solution has a pH of 9 or more.
Claim 19
Dependent Claim
26 words
A method for forming a high contrast negative image as claimed in claim 17, wherein said developer solution has a pH of from 9.5 to 12.3.
Claim 20
Dependent Claim
38 words
A method for forming a high contrast negative image as claimed in claim 10, wherein said silver halide photographic material contains from 1×10 -6 to 1×10 -1 mol of said hydrazine derivative per mol of said silver halide.
Claim 21
Dependent Claim
39 words
A method for forming a high contrast negative image as claimed in claim 1, wherein the average gamma value within the density range of from 0.3 to 3.0 of said high contrast negative image is from 8.0 to 30.0.
Claim 22
Dependent Claim
39 words
A method for forming a high contrast negative image as claimed in claim 20, wherein the average gamma value within the density range of from 0.3 to 3.0 of said high contrast negative image is from 10.0 to 25.0.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |