Process for forming photographic images

Claim 2

A process for forming photographic images consisting of a silver image and a dye image, which comprises development processing an imagewise exposed silver halide photographic light-sensitive material in the co-presence of (A) a naphthalene compound represented by formula (I): ##STR4## wherein R 1 , R 2 and R 3 each represents a hydrogen atom or a hydrophobic group containing at least 8 carbon atoms, and R 4 , R 5 , R 6 and R 7 each represents a hydrogen atom, a hydroxy group or a hydrophobic group containing at least 8 carbon atoms, with at least one of R 4 through R 7 representing a hydroxy group, and (B) a 3-pyrazolidone compound, said co-presence being established by incorporating said naphthalene compound (A) and said 3-pyrazolidone compound (B) alone or in combination in a silver halide emulsion layer, a hydrophilic colloid layer associated with the silver halide emulsion layer, or a developing solution such that upon development said naphthalene compound (A) and said 3-pyrazolidone compound (B) react to form a dye image, thereby said dye image contributing to said photographic images by at least about 20%.

Claim 3

The process of claim 1, wherein said contribution of said dye image to the photographic images is between about 30 and about 60%.

Claim 4

The process of claim 1, wherein said naphthalene compound is at least one compound selected from the group consisting of 1,5-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, and derivatives thereof.

Claim 5

The process of claim 1, wherein said pyrazolidone compound is represented by the formula (II) ##STR5## wherein R 8 represents an aryl group, and R 9 and R 10 each represents a hydrogen atom, an alkyl group or a hydroxyalkyl group.

Claim 6

The process of claim 4, wherein said 3-pyrazolidone compound is at least one compound selected from the group consisting of 1-phenyl-3-pyrazolidone, 1-phenyl-4,4-dimethyl-3-pyrazolidone, 1-phenyl-4-methyl-3-pyrazolidone, 1-phenyl-4-dihydroxymethyl-3-pyrazolidone, and the derivatives thereof.

Claim 7

The process of claim 5, wherein said hydroxynaphthalene compound is incorporated in a developer.

Claim 8

The process of claim 5, wherein said 3-pyrazolidone derivative is incorporated in a developer.

Claim 9

The process of claim 5, wherein both of said hydroxynaphthalene compound and said 3-pyrazolidone compound are incorporated in a developer.

Claim 10

The process of claim 5, wherein said hydroxynaphthalene compound is incorporated in a hydrophilic colloid layer constituting a silver halide photographic light-sensitive material.

Claim 11

The process of claim 5, wherein said 3-pyrazolidone compound is incorporated in a hydrophilic colloid layer constituting a silver halide photographic light-sensitive material.

Claim 12

The process of claim 5, wherein said hydroxynaphthalene compound is incorporated in a hydrophilic colloid layer constituting a silver halide photographic light-sensitive material and said 3-pyrazolidone compound is incorporated in a developer.

Claim 13

The process of claim 1, wherein said development processing fundamentally comprises developing, fixing and water-washing.

Claim 14

The process of claim 6, wherein said hydroxynaphthylene compound is present in said developer in an amount of about 0.1 to 30 g/l.

Claim 15

The process of claim 7, wherein said 3-pyrazolidone compound is incorporated in said developer in an amount of about 0.01 g/l to 5 g/l.

Claim 16

The process of claim 9, wherein said hydroxynaphthylene compound is incorporated into said light-sensitive material in an amount of about 0.1 g/m 2 to 10 g/m 2 .

Claim 17

The process of claim 10, wherein said 3-pyrazolidone compound is incorporated into said light-sensitive material in an amount of about 0.01 g/m 2 to 5 g/m 2 .

Claim 18

The process of claim 1, wherein said light-sensitive material contains silver halide in an amount of coated silver of about 0.1 to about 8 g/m 2 .

Claim 19

A process for reducing a coating weight of silver by providing photographic images consisting of a silver image and a dye image which comprises development processing an imagewise exposed silver halide photographic light-sensitive material in the co-presence of (A) a naphthalene compound represented by formula (I): ##STR6## wherein R 1 , R 2 and R 3 each represents a hydrogen atom or a hydrophobic group containing at least 8 carbon atoms, and R 4 , R 5 , R 6 and R 7 each represents a hydrogen atom, a hydroxy group or a hydrophobic group containing at least 8 carbon atoms, with at least one of R 4 through R 7 representing a hydroxy group, and (B) a 3-pyrazolidone compound, said co-presence being established by incorporating said naphthalene compound (A) and said 3-pyrazolidone compound (B) alone or in combination in a silver halide emulsion layer, a hydrophilic colloid layer associated with the silver halide emulsion layer, or a developing solution such that upon development said naphthalene compound (A) and said 3-pyrazolidone compound (B) react to form a dye image, thereby said dye image contributing to said photographic images by at least about 20%.

Claim 20

A process for reducing a coating weight of silver by providing photographic images consisting of a silver image and a dye image which comprises development processing an imagewise exposed silver halide photographic light-sensitive material in the co-presence of (A) a naphthalene compound represented by formula (I): ##STR6## wherein R 1 , R 2 and R 3 each represents a hydrogen atom or a hydrophobic group containing at least 8 carbon atoms, and R 4 , R 5 , R 6 and R 7 each represents a hydrogen atom, a hydroxy group or a hydrophobic group containing at least 8 carbon atoms, with at least one of R 4 through R 7 representing a hydroxy group, and (B) a 3-pyrazolidone compound, said co-presence being established by incorporating said naphthalene compound (A) and said 3-pyrazolidone compound (B) alone or in combination in a silver halide emulsion layer, a hydrophilic colloid layer associated with the silver halide emulsion layer, or a developing solution such that upon development said naphthalene compound (A) and said 3-pyrazolidone compound (B) react to form a dye image, thereby said dye image contributing to said photographic images by at least about 20%.

Claim 21

The process of claim 1 wherein said process additionally comprises the step of exposing said light-sensitive material to X-rays.

Claim 22

The process of claim 1 which consists essentially of development processing said imagewise exposed silver halide photographic light-sensitive material in the co-presence of said naphthalene compound (A) and said 3-pyrazolidone compound (B).

Claim 23

The process of claim 18 which consists essentially of development processing said imagewise exposed silver halide photographic light-sensitive material in the co-presence of said naphthalene compound (A) and said 3-pyrazolidone compound (B).