GB760775A - Increasing the speed of photographic emulsions - Google Patents

Increasing the speed of photographic emulsions

Info

Publication number
GB760775A
GB760775A GB19407/54A GB1940754A GB760775A GB 760775 A GB760775 A GB 760775A GB 19407/54 A GB19407/54 A GB 19407/54A GB 1940754 A GB1940754 A GB 1940754A GB 760775 A GB760775 A GB 760775A
Authority
GB
United Kingdom
Prior art keywords
emulsion
layer
titanium dioxide
silver halide
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.)
Expired
Application number
GB19407/54A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB760775A publication Critical patent/GB760775A/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
    • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
    • G03C5/10—Reflex-printing; Photoprinting using fluorescent or phosphorescent means
    • 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
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/95—Photosensitive materials characterised by the base or auxiliary layers rendered opaque or writable, e.g. with inert particulate additives

Abstract

760,775. Photographic materials. KODAK, Ltd. July 2, 1954 [July 16, 1953], No. 19407/54. Drawings to Specification. Class 98(2) The effective speed of a photographic gelatino-silver halide emulsion when printing an image therefrom on to a silver halide layeris increased by incorporating into the support or subbing layer zinc oxide or titanium dioxide, the refractive index of the support or subbing layer differing from that of the zinc oxide or titanium dioxide by at least 0.4, the gelatino-silver halide emulsion containing the equivalent of less than 5.4 g. of silver per square metre of surface and the pigmented layer having a total reflectance of about 40 to 90 per cent of all visible light. The emulsion is normally coated directly on the pigment layer, but a thin intervening layer may be applied provided its refractive index is less than 0.1 different from either of the other layers. In the examples, titanium dioxide or zinc oxide is dispersed in gelatin and coated on a film base, a silver halide emulsion is then coated on top of the pigment layer. In other examples a cellulose ester film base containing titanium dioxide is subbed and coated with (a) a gelatino-silver bromiodide emulsion, (b) a medium-speed emulsion overcoated with a fast emulsion and (c) emulsions sensitive to red, green and blue and containing respectively cyan, magenta and yellow colour couples, with a yellow filter layer between the green and blue sensitive layers. Specifications 282,980, 303,752 [both in Class 98(2)], and 541,589 are referred to.
GB19407/54A 1953-07-16 1954-07-02 Increasing the speed of photographic emulsions Expired GB760775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US760775XA 1953-07-16 1953-07-16

Publications (1)

Publication Number Publication Date
GB760775A true GB760775A (en) 1956-11-07

Family

ID=22129796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19407/54A Expired GB760775A (en) 1953-07-16 1954-07-02 Increasing the speed of photographic emulsions

Country Status (4)

Country Link
BE (1) BE530381A (en)
DE (1) DE1003036B (en)
FR (1) FR1110784A (en)
GB (1) GB760775A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215612A2 (en) 1985-09-03 1987-03-25 EASTMAN KODAK COMPANY (a New Jersey corporation) Silver halide photographic emulsions with novel grain faces (5)
EP0611988A2 (en) * 1993-02-12 1994-08-24 Kodak Limited Photographic elements for producing blue, green and red exposure records of the same hue and methods for the retrieval and differentiation of the exposure records
US5350650A (en) * 1993-02-12 1994-09-27 Eastman Kodak Company Methods for the retrieval of blue, green and red exposure records of the same hue from a photographic element containing emissive interlayers
US5418119A (en) * 1993-07-16 1995-05-23 Eastman Kodak Company Photographic elements for producing blue, green and red exposure records of the same hue
US6255044B1 (en) 1998-01-21 2001-07-03 Eastman Kodak Company Silver halide elements that produce sharp images without fixing and processes for their use

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215612A2 (en) 1985-09-03 1987-03-25 EASTMAN KODAK COMPANY (a New Jersey corporation) Silver halide photographic emulsions with novel grain faces (5)
EP0611988A2 (en) * 1993-02-12 1994-08-24 Kodak Limited Photographic elements for producing blue, green and red exposure records of the same hue and methods for the retrieval and differentiation of the exposure records
US5350664A (en) * 1993-02-12 1994-09-27 Eastman Kodak Company Photographic elements for producing blue, green, and red exposure records of the same hue and methods for the retrieval and differentiation of the exposure records
US5350650A (en) * 1993-02-12 1994-09-27 Eastman Kodak Company Methods for the retrieval of blue, green and red exposure records of the same hue from a photographic element containing emissive interlayers
EP0611988A3 (en) * 1993-02-12 1995-02-22 Kodak Ltd Photographic elements for producing blue, green and red exposure records of the same hue and methods for the retrieval and differentiation of the exposure records.
US5420003A (en) * 1993-02-12 1995-05-30 Eastman Kodak Company Silver halide photographic elements containing blue, green and red recording layer units that produce images of the same hue and at least one emissive interlayer to facilitate image retrieval by scanning
US5418119A (en) * 1993-07-16 1995-05-23 Eastman Kodak Company Photographic elements for producing blue, green and red exposure records of the same hue
US6255044B1 (en) 1998-01-21 2001-07-03 Eastman Kodak Company Silver halide elements that produce sharp images without fixing and processes for their use

Also Published As

Publication number Publication date
DE1003036B (en) 1957-02-21
FR1110784A (en) 1956-02-16
BE530381A (en)

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