JPS55134848A - Direct positive image forming method - Google Patents

Direct positive image forming method

Info

Publication number
JPS55134848A
JPS55134848A JP4239779A JP4239779A JPS55134848A JP S55134848 A JPS55134848 A JP S55134848A JP 4239779 A JP4239779 A JP 4239779A JP 4239779 A JP4239779 A JP 4239779A JP S55134848 A JPS55134848 A JP S55134848A
Authority
JP
Japan
Prior art keywords
substituted
density
positive image
developer
image forming
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
JP4239779A
Other languages
Japanese (ja)
Other versions
JPS5843735B2 (en
Inventor
Kazuhiro Kobayashi
Yosuke Sadahiro
Keiji Ogi
Yasuo Tosaka
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP4239779A priority Critical patent/JPS5843735B2/en
Publication of JPS55134848A publication Critical patent/JPS55134848A/en
Publication of JPS5843735B2 publication Critical patent/JPS5843735B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/50—Reversal development; Contact processes

Abstract

PURPOSE:To control development fogging and enhance the density of an image by imagewise exposing a direct positive image forming silver halide photographic material of internal latent image type followed by uniform exposure or treatment with a developer containing a tetrazaindene derivative in the presence of a fogging agent. CONSTITUTION:To a developer are added 0.01-20g/l of a tetrazaindene derivative represented by the formula [where each of R1 and R2 is H, (substituted) 1-4C alkyl or (substituted) aryl, R1 and R2 may be nonmetallic atoms required to form a 5- or 6-membered ring by bonding to each other, and R3 is H, (substituted) 1-4C alkyl or (substituted) aryl]. Using this developer a high quality positive image is obtained having a lower min. density and a higher max. density.
JP4239779A 1979-04-06 1979-04-06 Direct positive image formation method Expired JPS5843735B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4239779A JPS5843735B2 (en) 1979-04-06 1979-04-06 Direct positive image formation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4239779A JPS5843735B2 (en) 1979-04-06 1979-04-06 Direct positive image formation method

Publications (2)

Publication Number Publication Date
JPS55134848A true JPS55134848A (en) 1980-10-21
JPS5843735B2 JPS5843735B2 (en) 1983-09-28

Family

ID=12634924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4239779A Expired JPS5843735B2 (en) 1979-04-06 1979-04-06 Direct positive image formation method

Country Status (1)

Country Link
JP (1) JPS5843735B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6452146A (en) * 1987-05-28 1989-02-28 Fuji Photo Film Co Ltd Process for forming direct positive color picture image
EP2025512A1 (en) * 2007-08-14 2009-02-18 Agfa Graphics N.V. Method for making a lithographic printing plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60153449U (en) * 1984-03-22 1985-10-12 オムロン株式会社 Tactile push button switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6452146A (en) * 1987-05-28 1989-02-28 Fuji Photo Film Co Ltd Process for forming direct positive color picture image
EP2025512A1 (en) * 2007-08-14 2009-02-18 Agfa Graphics N.V. Method for making a lithographic printing plate
US8889340B2 (en) 2007-08-14 2014-11-18 Agfa Graphics, N.V. Method for making a lithographic printing plate

Also Published As

Publication number Publication date
JPS5843735B2 (en) 1983-09-28

Similar Documents

Publication Publication Date Title
JPS5269613A (en) Direct positive silver halide light sensitive material
GB1387033A (en) Photographic direct-positive process and silver halide emulsion therefor
JPS52110618A (en) Silver halide photographic emulsion
GB1150553A (en) A Method of Producing Photographic Images
JPS55134848A (en) Direct positive image forming method
JPS55137528A (en) Negative image forming method
GB1282778A (en) Direct-positive silver halide photographic process
JPS5366731A (en) Formation of hard tone photographic image
JPS52119943A (en) Electrophotographic process and apparatus
JPS5689738A (en) Forming method for photographic image
JPS5789749A (en) Silver halide photographic sensitive material
JPS5348735A (en) Processing method of silver halide photosensitive material
JPS5574542A (en) Processing method of silver halide color phototgraphic material
JPS57129435A (en) Formation of photographic image
JPS57129433A (en) Formation of photographic image
JPS55144237A (en) Sensitizing method for photographic emulsion
JPS64952A (en) Method for processing silver halide color photographic sensitive material superior in processing stability
GB1512135A (en) Colour development processing of silver halide photographic material
JPS643641A (en) Silver halide photographic sensitive material having high sensitivity
JPS5642242A (en) Electrophotographic method
JPS56109337A (en) Sliver halide photographic emulsion
UST969006I4 (en) Spectrally sensitized silver halide photographic emulsions
JPS5562450A (en) Processing method for silver halide color photographic material
JPS5773737A (en) Formation of negative image
GB1157617A (en) Method of making 3-Pyrazolidones

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees