发明授权
- 专利标题: Process for the preparation of high chloride tabular grain emulsions (IV)
- 专利标题(中): 制备高氯酸盐粒状乳液的方法(四)
-
申请号: US819712申请日: 1992-01-13
-
公开(公告)号: US5185239A公开(公告)日: 1993-02-09
- 发明人: Joe E. Maskasky
- 申请人: Joe E. Maskasky
- 申请人地址: NY Rochester
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 当前专利权人地址: NY Rochester
- 主分类号: G03C1/015
- IPC分类号: G03C1/015 ; G03C1/005 ; G03C1/035 ; G03C1/07
摘要:
A process of preparing a radiation sensitive high chloride high aspect ratio tabular grain emulsion is disclosed wherein silver ion is introduced into a gelatino-peptizer dispersing medium containing a stoichiometric excess of chloride ions with respect to the silver ions further characterized by a chloride ion concentration of less than 0.5 molar, a pH of at least 4.6, and a triaminopyrimidine grain growth modifier containing mutually independent 4, 5 and 6 ring position amino substituents, the 4 and 6 ring position substituents being hydroamino substituents.