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Patent Searching and Data


Title:
MANUFACTURE OF SOLID PROCESSING AGENT FOR SILVER HALIDE PHOTOGRAPHIC SENSITIVE MATERIAL
Document Type and Number:
Japanese Patent JPH0854719
Kind Code:
A
Abstract:

PURPOSE: To extremely reduce a fine powder amount and occurrence of fine powder, to facilitate handling, and to impart sufficient strength by rolling a powdery photographic processing agent while adding a solvent to granulate the agent into spherical granules.

CONSTITUTION: The solid processing agent is granulated into the spherical granules by rolling the powdery processing agent in a granulating machine or a rolling fluidizing bed while adding a solvent comprising water and a 1-3C alcohol and dried at a temperature of ≤70°C after the granulating. The powdery processing agent to be rolled contains a kind selected from among sugars and polyalkylene glycols in an amount of 0.5-20wt.% and the formed solid processing agent contains an alkali metal carbonate, and it is a color developing agent and the like containing a hydroxyamine type compound or a stabilizing processing agent containing a compound represented by one of formulae I and II in which each of R1-R7 is a 1-6C alkyl or the like; M is H or an alkali metal atom; each of (n) and (m) is 0 or 1; Z is an atomic group necessary to form a hydrocarbon ring or hetero ring; and X is an aldehyde group.


Inventors:
TSUCHIYA ICHIRO
Application Number:
JP19064894A
Publication Date:
February 27, 1996
Filing Date:
August 12, 1994
Export Citation:
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Assignee:
KONISHIROKU PHOTO IND
International Classes:
G03C5/26; G03C7/413; G03C7/42; G03C11/00; (IPC1-7): G03C7/413; G03C5/26; G03C7/42; G03C11/00