JPS5782835A - Photographic silver halide element - Google Patents

Photographic silver halide element

Info

Publication number
JPS5782835A
JPS5782835A JP14864180A JP14864180A JPS5782835A JP S5782835 A JPS5782835 A JP S5782835A JP 14864180 A JP14864180 A JP 14864180A JP 14864180 A JP14864180 A JP 14864180A JP S5782835 A JPS5782835 A JP S5782835A
Authority
JP
Japan
Prior art keywords
silver halide
emulsion
contg
sensitivity
coated
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
JP14864180A
Other languages
Japanese (ja)
Inventor
Takao Abe
Satoru Hozai
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 JP14864180A priority Critical patent/JPS5782835A/en
Publication of JPS5782835A publication Critical patent/JPS5782835A/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
    • G03C1/485—Direct positive emulsions
    • G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure

Landscapes

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

Abstract

PURPOSE:To obtain the titled element forming a fine positive image with high sensitivity, low minimum density and high maximum density by coating a support with an internal latent image type silver halide emulsion contg. no fogging nuclei and having a specified degree of surface sensitization. CONSTITUTION:Water soluble silver salt is mixed with water soluble halide and an aqueous peptizer soln. of silver halide to prepare an emulsion contg. internal latent image type silver halide particles contg. no fogging nuclei. This emulsion is aged and coated to form layers each having 3.5-4.5g/m<2> silver. The surfaces of the silver halide particles are then sensitized so that the sensitivity according to a sensitivity representing method of table II after long-time exposure is made lower than that after short-time exposure by 0.10 when the layers are exposed for 1/1,000sec and 8sec and developed with a developer of table I at 20 deg.C for 4min, respectively. A support is coated with the resulting emulsion to obtain a photographic silver halide element for forming a positive image.
JP14864180A 1980-10-22 1980-10-22 Photographic silver halide element Pending JPS5782835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14864180A JPS5782835A (en) 1980-10-22 1980-10-22 Photographic silver halide element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14864180A JPS5782835A (en) 1980-10-22 1980-10-22 Photographic silver halide element

Publications (1)

Publication Number Publication Date
JPS5782835A true JPS5782835A (en) 1982-05-24

Family

ID=15457331

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14864180A Pending JPS5782835A (en) 1980-10-22 1980-10-22 Photographic silver halide element

Country Status (1)

Country Link
JP (1) JPS5782835A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55127549A (en) * 1979-03-26 1980-10-02 Konishiroku Photo Ind Co Ltd Direct positive silver halide photographic material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55127549A (en) * 1979-03-26 1980-10-02 Konishiroku Photo Ind Co Ltd Direct positive silver halide photographic material

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