Silver halide photographic light-sensitive material improved on pinhole production

• US 4,978,602 A
• Filed: 10/05/1989
• Issued: 12/18/1990
• Est. Priority Date: 10/14/1988
• Status: Expired due to Fees

• Current Assignee: Konica Corporation (Konica Minolta Inc.)
• Original Assignee: Konica Corporation (Konica Minolta Inc.)
• Inventors: Fujita, Akio, Habu, Takeshi
• Primary Examiner(s): Michl, Paul R.
• Assistant Examiner(s): NEVILLE, THOMAS
• Application Number:
  US07/417,745
• Time in Patent Office: 439 Days
• Field of Search: 430/264, 430/517, 430/606, 430/536, 430/264, 430/517, 430/606, 430/536
• US Class Current: 430/264
• CPC Class Codes: G03C 1/061 Hydrazine compounds
• CPC Class Codes: G03C 1/067 Additives for high contrast images, other than hydrazine compounds
• CPC Class Codes: G03C 1/83 Organic dyestuffs therefor polymeric dyes G03C1/835
• CPC Class Codes: G03C 1/89 Macromolecular substances therefor

Abstract

A silver halide photographic light-sensitive material is disclosed, which is suitable for contact printing in photomechanical process and capable of being handled in daylight room. The light-sensitive material comprises a support having thereon a silver halide emulsion layer containing a silver halide emulsion and a hydrazine compound or a tetrazolium compound, a layer being provided on the surface of said emulsion layer farther from said support and containing a compound having a maximum spectral absorption at a wavelength of at least 50 nm longer than that of the maximum spectral sensitivity of said silver halide emulsion, and a layer being interposed between said support and said emulsion layer and containing a macromolecular compound having a heterocyclic group having a sulfo group or an alkylsulfo group. The light-sensitive material is excellent in reverse-text quality and inhibited in formation of pin-holes.

Claims

1. A silver halide photographic light-sensitive material comprising a support having thereon

a silver halide emulsion layer containing a silver halide emulsion and a hydrazine compound or a tetrazolium compound,

a layer being provided on the surface of said emulsion layer farther from said support and containing a compound having a maximum spectral absorption at a wavelength of at least 50 nm longer than that of the maximum spectral sensitivity of said silver halide emulsion, and

a layer being interposed between said support and said emulsion layer containing a macromolecular compound synthesized from ethylenically unsaturated monomers having a heterocyclic group with a sulfo group or an alkylsulfo group as a substituent;

said heterocyclic group being a pyridyl group, a pyrrodyl group, a carbazolyl group, a pyrrolyl group, a thienyl group, a furyl group or an indolyl group.

2. The material of claim 1, wherein said hydrazine compound is a compound represented by the following Formula Ia:

##STR22## wherein R¹ is a monovalent organic group;

R² is a hydrogen atom or a monovalent organic group;

Q₁ and Q₂ are each a hydrogen atom, a substituted or unsubstituted alkylsulfonyl group or a substituted or unsubstituted arylsulfonyl group; and

X₁ is an oxygen atom or a sulfur atom.

3. The material of claim 1, wherein said hydrazine compound is contained said silver halide emulsion layer in an amount of 10^-5 mol to 10^-1 mol per mol of silver halide contained in said emulsion layer.

4. The material of claim 3, wherein said hydrazine compound is contained said silver halide emulsion layer in an amount of 10^-4 mol to 10^-2 mol per mol of silver halide contained in said emulsion layer.

5. The material of claim 1, wherein said terazolium compound is a compound represented by the following Formula Ib, Ic or Id:

##STR23## wherein R₁, R₃, R₄, R₅, R₈, R₉, R₁₀ and R₁₁ are each an alkyl group, an alkenyl group, an aryl group or a heterocyclic group, provided that these groups are allowed to have a substituent;

R₂, R₆ and R₇ are each an allyl group, a phenyl group, a naphthyl group, a heterocyclic group, an alkyl group, a hydroxyl group, a carboxyl group, an alkoxycarbonyl hydrogen atom, provided that these groups are allowed to have a substituent;

D is an aromatic group;

E is an alkylene group, an arylene group or a aralkylene group;

X.sup.⊖

is an anion and n is an integer of 1 or 2, provided that n is 1 when an intramolecular salt is formed.

6. The material of claim 1, wherein said tetrazolium compound is contained in said silver halide emulsion layer in an amount of from 10^-6 mol to 10 mol per mol of silver halide contained said emulsion layer.

7. The material of claim 6, wherein said tetrazolium compound is contained in said silver halide emulsion layer in an amount of from 2×

10^-4 mol to 2×

10^-1 mol per mol of silver halide contained said emulsion layer.

8. The material of claim 1, wherein said layer interposed between said support and said emulsion layer contains said macromolecular compound in an amount of from 10^-3 mg/m² to 10³ mg/m².

9. The material of claim 8, wherein said layer contains said macromolecular compound in an amount of from 10^-1 mg/m² to 10² mg/m².

10. The material of claim 1, wherein the substituent on the heterocyclic group is an alkylsulfo group with 1 to 16 carbon atoms.

11. The material of claim 1, wherein the substituent on the heterocyclic group is the sulfo group.

12. The material of claim 1, wherein the heterocyclic group is the pyridyl group.

13. The material of claim 1, wherein the heterocyclic group is the pyrrodyl.

14. The material of claim 1, wherein the heterocyclic group is the carbazolyl group.

15. The material of claim 1, wherein the heterocyclic group is the pyrrolyl group.

16. The material of claim 1, wherein the heterocyclic group is the thienyl group.

17. The material of claim 1, wherein the heterocyclic group is the furyl group.

18. The material of claim 1, wherein the heterocyclic group is the indolyl group.