JPS5636646A - Manufacture of direct positive silver halide photographic material - Google Patents

Manufacture of direct positive silver halide photographic material

Info

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
Application number
JP11251279A
Other languages
Japanese (ja)
Other versions
JPS6138458B2 (en
Inventor
Susumu Baba
Akio Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Paper Mills Ltd
Original Assignee
Mitsubishi Paper Mills Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Paper Mills Ltd filed Critical Mitsubishi Paper Mills Ltd
Priority to JP11251279A priority Critical patent/JPS5636646A/en
Publication of JPS5636646A publication Critical patent/JPS5636646A/en
Publication of JPS6138458B2 publication Critical patent/JPS6138458B2/ja
Granted legal-status Critical Current

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
JP11251279A 1979-09-03 1979-09-03 Manufacture of direct positive silver halide photographic material Granted JPS5636646A (en)

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)

Also Published As

Publication number Publication date
JPS6138458B2 (en) 1986-08-29

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