GB845217A - A photographic material for the production of photographic records with tone value correction - Google Patents

A photographic material for the production of photographic records with tone value correction

Info

Publication number
GB845217A
GB845217A GB1946757A GB1946757A GB845217A GB 845217 A GB845217 A GB 845217A GB 1946757 A GB1946757 A GB 1946757A GB 1946757 A GB1946757 A GB 1946757A GB 845217 A GB845217 A GB 845217A
Authority
GB
United Kingdom
Prior art keywords
production
gamma
valve
records
inner layer
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
GB1946757A
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.)
Agfa Gevaert NV
Original Assignee
Agfa AG
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 Agfa AG filed Critical Agfa AG
Publication of GB845217A publication Critical patent/GB845217A/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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/46—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein having more than one photosensitive layer

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)

Abstract

845,217. Photographic silver halide materials. AGFA A. G. June 20, 1957 [June 26, 1956], No. 19467/57. Drawings to Specification. Class 98(2) Material for production of records with tone valve correction comprises a support having an inner layer of gamma valve of 0À5 to 0À9, and an outer layer thereover of gamma valve at least 1¢ times that of the inner layer and a speed of 1/20 to 1/80 of such inner layer. The two layers may be sensitive to the same or different regions of the spectrum, with both panchromatic they may be used for production of colour separation records of improved highlight reproduction, the image in the outer layer constituting a mask and such can be reduced if desired with Farmer's reducer without the lower image suffering. In a single example the emulsion disclosed in BIOS-Bericht 1355 page 35 green sensitised with 3, 31, 9-triethyl-5, 51-diphenyl oxacarbocyanine iodide is cast on an acetyl cellulose support and the emulsion of the Fiat Final Report 360, page 24 is cast thereover, and this material is exposed as in a process camera to a black and white original and treated in a specified developer to produce images of gamma valves 2À8 and 0À9 respectively, if exposure is made to a negative original tone valve correction in the shadows is achieved.
GB1946757A 1956-06-26 1957-06-20 A photographic material for the production of photographic records with tone value correction Expired GB845217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA25172A DE1046491B (en) 1956-06-26 1956-06-26 Photographic material for recordings with tonal value correction

Publications (1)

Publication Number Publication Date
GB845217A true GB845217A (en) 1960-08-17

Family

ID=6925847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1946757A Expired GB845217A (en) 1956-06-26 1957-06-20 A photographic material for the production of photographic records with tone value correction

Country Status (5)

Country Link
BE (1) BE558670A (en)
CH (1) CH357973A (en)
DE (1) DE1046491B (en)
FR (1) FR1178578A (en)
GB (1) GB845217A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450536A (en) * 1961-03-24 1969-06-17 Eg & G Inc Silver halide photographic film having increased exposure-response characteristics
GB2166559A (en) * 1984-09-14 1986-05-08 Fuji Photo Film Co Ltd Photosensitive element for use in the silver salt diffusion transfer process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888676A (en) * 1973-08-27 1975-06-10 Du Pont Silver halide films with wide exposure latitude and low gradient
US3938520A (en) * 1974-06-10 1976-02-17 Abbott Laboratories Transfer unit having a dual channel transfer member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450536A (en) * 1961-03-24 1969-06-17 Eg & G Inc Silver halide photographic film having increased exposure-response characteristics
GB2166559A (en) * 1984-09-14 1986-05-08 Fuji Photo Film Co Ltd Photosensitive element for use in the silver salt diffusion transfer process

Also Published As

Publication number Publication date
DE1046491B (en) 1958-12-11
FR1178578A (en) 1959-05-12
BE558670A (en)
CH357973A (en) 1961-10-31

Similar Documents

Publication Publication Date Title
GB1528836A (en) Photographic colour silver halide materials
GB1350249A (en) Colour photographic silver halide materials
GB845217A (en) A photographic material for the production of photographic records with tone value correction
GB511535A (en) Improvements in and relating to colour photography
GB799590A (en) Tone correction of photographic image
GB746948A (en) Improvements in photographic reproduction processes and in materials therefor
GB1029697A (en) Photographic multi-layer material for producing colour separation records
GB702200A (en) Improvements in mixed grain colour photography
GB987634A (en) Improved masking film
GB1277213A (en) A process for the production of negative or positive continuous tone or screened images thereof
GB681212A (en) Improvements in or relating to photomechanical reproduction
US2051161A (en) Method of making photographic mats
GB942543A (en) Improvements in or relating to photographic masks
GB827017A (en) Method of making modified photographs
GB884251A (en) A process and photographic material for the production of photographic records and copies which are corrected for tone valne
GB1306874A (en) Method of making photographic images
GB935050A (en) Colour radiography
SU112342A1 (en) Method for photomechanical correction of color-separated negatives by masking
GB488548A (en) Improved photographic sensitive material for colour photography
GB238862A (en) Improved method of securing accurate colour values in colour printing and colour photography
GB1078682A (en) Improvements in the formation of images
AT202446B (en)
US3485626A (en) Multicolor diffusing diaphragm
GB923711A (en) Photographic material
GB983887A (en) Improvements in or relating to the production of photographic images