Claims
- 1. 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.sup.1, R.sup.2 and R.sup.3 each represents a hydrogen atom or a hydrophobic group containing at least 8 carbon atoms, and R.sup.4, R.sup.5, R.sup.6 and R.sup.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.sup.4 through R.sup.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%.
- 2. The process of claim 1, wherein said contribution of said dye image to the photographic images is between about 30 and about 60%.
- 3. 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.
- 4. The process of claim 1, wherein said pyrazolidone compound is represented by the formula (II) ##STR5## wherein R.sup.8 represents an aryl group, and R.sup.9 and R.sup.10 each represents a hydrogen atom, an alkyl group or a hydroxyalkyl group.
- 5. 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.
- 6. The process of claim 5, wherein said hydroxynaphthalene compound is incorporated in a developer.
- 7. The process of claim 5, wherein said 3-pyrazolidone derivative is incorporated in a developer.
- 8. The process of claim 5, wherein both of said hydroxynaphthalene compound and said 3-pyrazolidone compound are incorporated in a developer.
- 9. The process of claim 5, wherein said hydroxynaphthalene compound is incorporated in a hydrophilic colloid layer constituting a silver halide photographic light-sensitive material.
- 10. 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.
- 11. 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.
- 12. The process of claim 1, wherein said development processing fundamentally comprises developing, fixing and water-washing.
- 13. 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.
- 14. 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.
- 15. 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.sup.2 to 10 g/m.sup.2.
- 16. 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.sup.2 to 5 g/m.sup.2.
- 17. 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.sup.2.
- 18. 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.sup.1, R.sup.2 and R.sup.3 each represents a hydrogen atom or a hydrophobic group containing at least 8 carbon atoms, and R.sup.4, R.sup.5, R.sup.6 and R.sup.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.sup.4 through R.sup.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%.
- 19. The process of claim 1 wherein said process additionally comprises the step of exposing said light-sensitive material to X-rays.
- 20. 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).
- 21. 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).
Priority Claims (1)
Number |
Date |
Country |
Kind |
53/25159 |
Mar 1978 |
JPX |
|
Parent Case Info
This is a continuation-in-part of application Ser. No. 17,671, filed Mar. 5, 1979, now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (3)
Number |
Date |
Country |
478984 |
Jan 1938 |
GBX |
1122085 |
Jul 1968 |
GBX |
1157959 |
Jul 1969 |
GBX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
17671 |
Mar 1979 |
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