EP0362699A3 - Reduced dispersity high aspect ratio tabular grain emulsions - Google Patents

Reduced dispersity high aspect ratio tabular grain emulsions Download PDF

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Publication number
EP0362699A3
EP0362699A3 EP19890117978 EP89117978A EP0362699A3 EP 0362699 A3 EP0362699 A3 EP 0362699A3 EP 19890117978 EP19890117978 EP 19890117978 EP 89117978 A EP89117978 A EP 89117978A EP 0362699 A3 EP0362699 A3 EP 0362699A3
Authority
EP
European Patent Office
Prior art keywords
aspect ratio
high aspect
tabular grain
grain emulsions
ratio tabular
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.)
Withdrawn
Application number
EP19890117978
Other languages
German (de)
French (fr)
Other versions
EP0362699A2 (en
Inventor
Philip Joseph C/O Eastman Kodak Company Zola
Roger Anthony C/O Eastman Kodak Company Bryant
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP0362699A2 publication Critical patent/EP0362699A2/en
Publication of EP0362699A3 publication Critical patent/EP0362699A3/en
Withdrawn legal-status Critical Current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
    • G03C1/0051—Tabular grain emulsions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

A high aspect ratio silver bromoiodide tabular grain emulsion is disclosed in which tabular grains having a thickness of less than 0.3 µm account for greater than 50 percent of the projected area of the total grain population and have an average aspect ratio of greater than 12. The coefficient of variation of the total grain population is unusually low when the high average aspect ratio of the tabular grains is taken into account.
EP19890117978 1988-10-03 1989-09-28 Reduced dispersity high aspect ratio tabular grain emulsions Withdrawn EP0362699A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US25272388A 1988-10-03 1988-10-03
US252723 1988-10-03
US35899989A 1989-05-30 1989-05-30
US358999 1989-05-30

Publications (2)

Publication Number Publication Date
EP0362699A2 EP0362699A2 (en) 1990-04-11
EP0362699A3 true EP0362699A3 (en) 1991-03-13

Family

ID=26942592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890117978 Withdrawn EP0362699A3 (en) 1988-10-03 1989-09-28 Reduced dispersity high aspect ratio tabular grain emulsions

Country Status (2)

Country Link
EP (1) EP0362699A3 (en)
JP (1) JPH02222940A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248587A (en) * 1990-10-23 1993-09-28 Eastman Kodak Company Low temperature growth emulsion making process
US5104786A (en) * 1990-10-29 1992-04-14 Eastman Kodak Company Plug-flow process for the nucleation of silver halide crystals
US5250403A (en) * 1991-04-03 1993-10-05 Eastman Kodak Company Photographic elements including highly uniform silver bromoiodide tabular grain emulsions
US5210013A (en) * 1991-05-14 1993-05-11 Eastman Kodak Company Very low coefficient of variation tabular grain emulsion
US5314793A (en) * 1992-04-16 1994-05-24 Eastman Kodak Company Multicolor photographic elements exhibiting an enhanced speed-granularity relationship
US5460934A (en) * 1993-10-21 1995-10-24 Eastman Kodak Company Chloride containing high bromide ultrathin tabular grain emulsions
US5411851A (en) * 1994-02-14 1995-05-02 Eastman Kodak Company Grain growth process for the preparation of high bromide ultrathin tabular grain emulsions
US5603637A (en) * 1994-08-04 1997-02-18 Sumitomo Wiring Systems, Ltd. Waterproof plug structure
EP0699950B1 (en) 1994-08-26 2000-05-24 Eastman Kodak Company Ultrathin tabular grain emulsions with novel dopant management
EP0699946B1 (en) 1994-08-26 2001-01-17 Eastman Kodak Company Ultrathin tabular grain emulsions with sensitization enhancements (II)
EP0699949B1 (en) 1994-08-26 2000-06-07 Eastman Kodak Company Ultrathin tabular grain emulsions with dopants at selected locations
US5418125A (en) * 1994-09-08 1995-05-23 Eastman Kodak Company Grain growth process for the preparation of high bromide ultrathin tabular grain emulsions
US5411853A (en) * 1994-09-08 1995-05-02 Eastman Kodak Company Grain growth process for the preparation of high bromide ultrathin tabular grain emulsions
US5667955A (en) 1995-08-10 1997-09-16 Eastman Kodak Company High bromide ultrathin tabular emulsions improved by peptizer modification
US6228573B1 (en) 1999-12-15 2001-05-08 Eastman Kodak Company Process for the preparation of high bromide ultrathin tabular grain emulsions

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707135A1 (en) * 1986-03-06 1987-09-10 Fuji Photo Film Co Ltd SILVER HALOGENID EMULSIONS AND METHOD FOR THEIR PRODUCTION
EP0326853A1 (en) * 1988-01-18 1989-08-09 Fuji Photo Film Co., Ltd. Silver halide photographic emulsions and process for preparing the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707135A1 (en) * 1986-03-06 1987-09-10 Fuji Photo Film Co Ltd SILVER HALOGENID EMULSIONS AND METHOD FOR THEIR PRODUCTION
EP0326853A1 (en) * 1988-01-18 1989-08-09 Fuji Photo Film Co., Ltd. Silver halide photographic emulsions and process for preparing the same

Also Published As

Publication number Publication date
EP0362699A2 (en) 1990-04-11
JPH02222940A (en) 1990-09-05

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