Silver halide photographic material and method for forming super high contrast negative images therewith

Claim 2

A negative type silver halide photographic material comprising a support, at least one silver halide emulsion layer on the support, and at least one light-insensitive hydrophilic colloid layer on the support, wherein said emulsion layer or light-insensitive hydrophilic colloid layer contains a hydrazine derivative, and further contains a tertiary amine salt of an acid polymer.

Claim 3

A negative type silver halide photographic material as in claim 1, wherein said acid polymer is a compound represented by formula (IIa) or formula (IIb) ##STR25## wherein X represents a hydrogen atom, a halogen atom, a cyano group, or a substituted or unsubstituted alkyl group; Y represents a hydrogen atom, a halogen atom, cyano group, a substituted or unsubstituted alkyl group, a group ##STR26## (wherein R 11 represents a substituted or unsubstituted alkyl group having 2 or more carbon atoms, or a substituted or unsubstituted aryl group), a group ##STR27## (wherein R 12 represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group), a group ##STR28## (wherein R 13 and R 14 each represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group), or a substituted or unsubstituted aryl group; A represents a repeating unit derived from an ethylenically unsaturated monocarboxylic acid or monocarboxylic acid salt capable of copolymerizing with an ethylenically unsaturated monomer; B represents a polyfunctional crosslinking agent; and x, y, p, q, and r each represents the mol percentage of the respective components with which they are associated in formulae (IIa) and (IIb) and have the following relationship: x+y=100, 0≦x≦60, 40≦y≦100, p+q+r=100, 0≦p≦60, 30≦q≦100, 0≦r≦40.

Claim 4

A negative type silver halide photographic material as in claim 1, wherein said tertiary amine is a compound represented by formula (IV) ##STR29## wherein R 21 , R 22 , and R 23 are each selected from an alkyl group having 6 or less carbon atoms; a substituted alkyl group; an aryl group having from 6 to 12 carbon atoms; a substituted aryl group; and a 5- or 6-membered ring formed by N and two of R 21 , R 22 , and R 23 .

Claim 5

A negative type silver halide photographic material as in claim 3, wherein at least one of R 21 , R 22 , and R 23 represents a hydroxy ethyl group.

Claim 6

A negative type silver halide photographic material as in claim 1, wherein the tertiary amine salt of the acid polymer is present in an amount from 10 mg/m 2 to 10 g/m 2 , and the amount of acidic groups thereof is from 0.1 mmol/m 2 to 100 mmol/m 2 .

Claim 7

A negative type silver halide photographic material as in claim 1, wherein the tertiary amine salt of the acid polymer is present in an amount from 20 mg/m 2 to 3 g/m 2 , and the amount of acidic groups thereof is from 0.5 mmol/m 2 to 50 mmol/m 2 .

Claim 10

A method for forming a super high contrast negative image as in claim 7, wherein said acid polymer is a compound represented by formula (IIa) or formula (IIb) ##STR30## wherein X represents a hydrogen atom, a halogen atom, a cyano group, or a substituted or unsubstituted alkyl group; Y represents a hydrogen atom, a halogen atom, cyano group, a substituted or unsubstituted alkyl group, a group ##STR31## (wherein R 11 represents a substituted or unsubstituted alkyl group having 2 or more carbon atoms, or a substituted or unsubstituted aryl group), a group ##STR32## (wherein R 12 represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group), a group ##STR33## (wherein R 13 and R 14 each represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group), or a substituted or unsubstituted aryl group; A represents a repeating unit derived from an ethylenically unsaturated monocarboxylic acid or monocarboxylic acid salt capable of copolymerizing with an ethylenically unsaturated monomer; B represents a polyfunctional crosslinking agent; and x, y, p, q, and r each represents the mol percentage of the respective components with which they are associated in formulae (IIa) and (IIb) and have the following relationship: x+y=100, 0≦x≦60, 40≦y≦100, p+q+r=100, 0≦p≦60, 30≦q≦100, 0≦r≦40.

Claim 11

A method for forming a super high contrast negative image as in claim 7, wherein said tertiary amine is a compound represented by formula (IV) ##STR34## wherein R 21 , R 22 , and R 23 are each selected from an alkyl group having 6 or less carbon atoms; a substituted alkyl group; an aryl group having from 6 to 12 carbon atoms; a substituted aryl group; and a 5- or 6-membered ring formed by N and two of R 21 , R 22 , and R 23 .

Claim 12

A method for forming a super high contrast negative image as in claim 9, wherein at least one of R 21 , R 22 , and R 23 represents a hydroxy ethyl group.

Claim 13

A method for forming a super high contrast negative image as in claim 7, wherein the tertiary amine salt of the acid polymer is present in an amount from 10 mg/m 2 to 10 g/m 2 , and the amount of acidic groups thereof is from 0.1 mmol/m 2 to 100 mmol/m 2 .

Claim 14

A method for forming a super high contrast negative image as in claim 7, wherein the tertiary amine salt of the acid polymer is present in an amount from 20 mg/m 2 to 3 g/m 2 , and the amount of acidic groups thereof is from 0.5 mmol/m 2 to 50 mmol/m 2 .