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JPS56142523A - Silver halide photographic emulsion - Google Patents

Silver halide photographic emulsion

Info

Publication number
JPS56142523A
JPS56142523A JP4519580A JP4519580A JPS56142523A JP S56142523 A JPS56142523 A JP S56142523A JP 4519580 A JP4519580 A JP 4519580A JP 4519580 A JP4519580 A JP 4519580A JP S56142523 A JPS56142523 A JP S56142523A
Authority
JP
Japan
Prior art keywords
nucleic acid
acid bases
emulsion
silver halide
gelatin
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.)
Pending
Application number
JP4519580A
Other languages
Japanese (ja)
Inventor
Jun Shirasaki
Kazuo Takahashi
Kazuo Ochiai
Hiroaki Shiozawa
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 JP4519580A priority Critical patent/JPS56142523A/en
Publication of JPS56142523A publication Critical patent/JPS56142523A/en
Pending 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/067—Additives for high contrast images, other than hydrazine compounds

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To obtain an image of superior halftone quality free from black spots in case of a scanner system by which exposure of high illumination is carried out for a short time by adding a specified amount of nucleic acid bases to gelatin of a lith type photosensitive material. CONSTITUTION:A silver halide emulsion is prepared by adding nucleic acid bases by (4-12)X10<-6>mol in total to 1g of gelatin so that nucleic acid bases represented by formula I are contained by (4-8)X10<-6>mol. This superior photographic emulsion is used to manufacture a photographic original plate for printing composed of dots and lines of high contrast. This emulsion for a photosensitive material has high sensitivity especially to He-Ne laser beams and does not cause black spots, etc.
JP4519580A 1980-04-08 1980-04-08 Silver halide photographic emulsion Pending JPS56142523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4519580A JPS56142523A (en) 1980-04-08 1980-04-08 Silver halide photographic emulsion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4519580A JPS56142523A (en) 1980-04-08 1980-04-08 Silver halide photographic emulsion

Publications (1)

Publication Number Publication Date
JPS56142523A true JPS56142523A (en) 1981-11-06

Family

ID=12712484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4519580A Pending JPS56142523A (en) 1980-04-08 1980-04-08 Silver halide photographic emulsion

Country Status (1)

Country Link
JP (1) JPS56142523A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324391A2 (en) * 1988-01-11 1989-07-19 Konica Corporation Method for the formation of high-contrast images
JPH0353239A (en) * 1989-07-21 1991-03-07 Konica Corp Silver halide photographic sensitive material
JPH03204636A (en) * 1990-01-05 1991-09-06 Fuji Photo Film Co Ltd Silver halide photographic sensitive material
JPH04305645A (en) * 1991-04-02 1992-10-28 Fuji Photo Film Co Ltd Silver halide photographic sensitive material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324391A2 (en) * 1988-01-11 1989-07-19 Konica Corporation Method for the formation of high-contrast images
EP0324391A3 (en) * 1988-01-11 1990-12-27 Konica Corporation Method for the formation of high-contrast images
JPH0353239A (en) * 1989-07-21 1991-03-07 Konica Corp Silver halide photographic sensitive material
JPH03204636A (en) * 1990-01-05 1991-09-06 Fuji Photo Film Co Ltd Silver halide photographic sensitive material
JPH04305645A (en) * 1991-04-02 1992-10-28 Fuji Photo Film Co Ltd Silver halide photographic sensitive material

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