Claims
- 1. A method of reducing fog in a silver halide emulsion comprising taking a high fogging emulsion which has been chemically sensitized and cooled, holding the high fogging emulsion in the form of a melt in preparation for coating on a support, and prior to or during said holding, contacting the emulsion with an isothiazolin-one compound represented by the following formula wherein R1 is a substituent; and Z contains the carbon atoms necessary to form a substituted or unsubstituted non-aromatic ring.
- 2. The method of claim 1 wherein Z contains the carbon atoms necessary to form a substituted or unsubstituted five or six-membered non-aromatic ring.
- 3. The method of claim 2 wherein Z contains the carbon atoms necessary to form a substituted or unsubstituted five-membered non-aromatic ring.
- 4. The method of claim 1 wherein R1 is a hydrogen atom or a substituted or unsubstituted aliphatic, aromatic or heterocyclic group.
- 5. The method of claim 2 wherein R1 is a hydrogen atom or a, substituted or unsubstituted aliphatic, aromatic or heterocyclic group.
- 6. The method of claim 1 wherein R1 is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 10 carbon atoms or a substituted or unsubstituted 5 to 6-membered heterocyclic ring.
- 7. The method of claim 2 wherein R1 is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 10 carbon atoms or a substituted or unsubstituted 5 to 6-membered heterocyclic ring.
- 8. The method of claim 3 wherein R1 is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.
- 9. The method of claim 1 wherein the emulsion is held in the melt form for more than 60 minutes.
- 10. The method of claim 2 wherein the emulsion is held in the melt form for more than 60 minutes.
- 11. The method of claim 3 wherein the emulsion is held in the melt form for more than 60 minutes.
- 12. The method of claim 1 wherein the isothiazolin-one compound is added prior to holding the emulsion.
CROSS REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part application of Ser. No. 09/177,220 filed Oct. 22, 1998 entitled “A Method of Suppressing Fog in Silver Halide Emulsions” by Eikenber et al. now abandoned.
US Referenced Citations (7)
Non-Patent Literature Citations (5)
Entry |
Japanese Abstract 09-329862. |
Japanese Abstract 10-011739. |
Japanese Abstract 09-133977. |
Research Disclosure No. 37026, Feb. 1995. |
Research Disclosure No. 308119, Dec. 1989. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
09/177220 |
Oct 1998 |
US |
Child |
09/416822 |
|
US |