JPS5636646A - Manufacture of direct positive silver halide photographic material - Google Patents
Manufacture of direct positive silver halide photographic materialInfo
- Publication number
- JPS5636646A JPS5636646A JP11251279A JP11251279A JPS5636646A JP S5636646 A JPS5636646 A JP S5636646A JP 11251279 A JP11251279 A JP 11251279A JP 11251279 A JP11251279 A JP 11251279A JP S5636646 A JPS5636646 A JP S5636646A
- Authority
- JP
- Japan
- Prior art keywords
- silver halide
- direct positive
- halide photographic
- compound
- photographic material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To obtain a direct positive silver halide photographic material having high sensitivity and photographic characteristics very stable to aging by using a silver halide emulsion consisting of fogged silver halide particles and an electron acceptor.
CONSTITUTION: To a direct positive fogged silver halide photographic emulsion are added synthetic polymer latex, a compound of a metal having potential higher than that of silver and a compound represented by general formula I (where n is 0 or an integer of 1W8, R1 and R2 form a 5-or 6-membered ring together with the bonded C, one of R1 and R2 may be H, the other may be H, ≤17C alkyl, aryl or -CH(SO3M) (-CH2-)n OH, and M is a cation). the latex includes an aqueous dispersion of a vinyl polymer, and especially a polymer of acrylic acid, acrylic acid ester, methacrylic acid or methacrylic acid ester has a large effect. A gold compound such as chloroauric acid is suitably used as the metal compound.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11251279A JPS5636646A (en) | 1979-09-03 | 1979-09-03 | Manufacture of direct positive silver halide photographic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11251279A JPS5636646A (en) | 1979-09-03 | 1979-09-03 | Manufacture of direct positive silver halide photographic material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5636646A true JPS5636646A (en) | 1981-04-09 |
JPS6138458B2 JPS6138458B2 (en) | 1986-08-29 |
Family
ID=14588496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11251279A Granted JPS5636646A (en) | 1979-09-03 | 1979-09-03 | Manufacture of direct positive silver halide photographic material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5636646A (en) |
-
1979
- 1979-09-03 JP JP11251279A patent/JPS5636646A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6138458B2 (en) | 1986-08-29 |
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