GB799590A - Tone correction of photographic image - Google Patents
Tone correction of photographic imageInfo
- Publication number
- GB799590A GB799590A GB8331/56A GB833156A GB799590A GB 799590 A GB799590 A GB 799590A GB 8331/56 A GB8331/56 A GB 8331/56A GB 833156 A GB833156 A GB 833156A GB 799590 A GB799590 A GB 799590A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- printing
- black
- mask
- white
- 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
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F3/00—Colour separation; Correction of tonal value
- G03F3/04—Colour separation; Correction of tonal value by photographic means
- G03F3/06—Colour separation; Correction of tonal value by photographic means by masking
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
-
- 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
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
799,590. Tone correction of photographic images. AGFA AKT.-GES. [formerly AGFA AKT.-GES. FUR PHOTOFABRIKATTON.]. March 16, 1956 [March 19, 1955], No. 8331/56. Drawings to Specification. Class 98(2) A black and white or a monochromatic normal photographic image is combined with a coloured tone-correcting mask of colour different from that of the normal image, image and mask being either both positive or both negative, and these are copied by printing light absorbed by the normal image and usually partially absorbed by the mask on to a photographic layer sensitive to the light employed, whereby the light partially absorbed by the mask can be chosen to print the latter in desired gradation. The pair so printed may be separate or inseparably combined and printing may be in one step or separate steps for image and mask. In Example 1 a green-sensitized gelatino-silver bromide emulsion containing a specified magenta coupler on a transparent support is overcoated with a silver halide layer of 1/20th sensitivity of that of the inner layer and which is not optically sensitized but contains a specified yellow coupler, and this material is exposed in a camera to a black and white continuous tone image, colour developed, bleached and fixed with production of magenta image and yellow tone-correcting mask of specified relative gradations and printed on to an orthochromatic layer in two steps with blue and green printing lights respectively. The same effect can be achieved if the inner layer does not contain a coupler and the material is not bleached after development but only fixed, to produce silver and silver plus dye images respectively. Example 2 indicates production of a black and white silver image and a separate magenta coloured high-light image from a black and white continuous-tone image on a paper support, registration of the images so produced and printing thereof on to orthochromatic material as in Example 1. In Example 3 a multicolour negative is printed through a green filter on to two sheets of orthochromatic material, one of these is developed to form the normal black and white image and the other, of short exposure, is developedd to cyan, and these images are registered and printed through a screen on to a panchromatic layer using red and green filters successively, to result in copy for the production of a printing plate for the red partial image of multicolour printing. Example 4 describes production of a yellow high light image on a diazo layer from a black and white diapositive, registration of such with its original and printing or to carbon tissue.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA0025749 | 1956-09-26 | ||
DEA25926A DE1063458B (en) | 1956-09-26 | 1956-10-29 | Process for the production of tone-corrected copies |
Publications (1)
Publication Number | Publication Date |
---|---|
GB799590A true GB799590A (en) | 1958-08-13 |
Family
ID=25963271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8331/56A Expired GB799590A (en) | 1956-09-26 | 1956-03-16 | Tone correction of photographic image |
Country Status (5)
Country | Link |
---|---|
US (1) | US3035913A (en) |
BE (1) | BE561126A (en) |
DE (2) | DE1063458B (en) |
FR (1) | FR1147592A (en) |
GB (1) | GB799590A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE614897A (en) * | 1961-03-10 | |||
US3450536A (en) * | 1961-03-24 | 1969-06-17 | Eg & G Inc | Silver halide photographic film having increased exposure-response characteristics |
US3241960A (en) * | 1961-10-24 | 1966-03-22 | American Optical Corp | Method for making vectographs |
GB1051331A (en) * | 1962-06-27 | |||
US3227059A (en) * | 1962-08-08 | 1966-01-04 | Logetronics Inc | Photographic reproduction method and apparatus |
US3332332A (en) * | 1963-01-16 | 1967-07-25 | Fotorite Inc | Apparatus and method for altering the contrast characteristic of photosensitive materials |
US3620747A (en) * | 1968-05-20 | 1971-11-16 | Eastman Kodak Co | Photographic element including superimposed silver halide layers of different speeds |
USRE28760E (en) * | 1968-05-20 | 1976-04-06 | Eastman Kodak Company | Photographic element including superimposed silver halide layers of different speeds |
US4184876A (en) * | 1974-07-09 | 1980-01-22 | Eastman Kodak Company | Color photographic materials having increased speed |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1804727A (en) * | 1921-11-02 | 1931-05-12 | Technicolor Motion Picture | Photography |
GB732691A (en) * | 1952-11-19 | 1955-06-29 | Walter Gilbert | Colour photographic process |
US2737457A (en) * | 1952-11-22 | 1956-03-06 | Jerome Flax | Photographic method of tonal scale compensation |
-
0
- DE DENDAT1066090D patent/DE1066090B/de active Pending
- BE BE561126D patent/BE561126A/xx unknown
-
1956
- 1956-03-16 GB GB8331/56A patent/GB799590A/en not_active Expired
- 1956-03-17 FR FR1147592D patent/FR1147592A/en not_active Expired
- 1956-10-29 DE DEA25926A patent/DE1063458B/en active Pending
-
1957
- 1957-09-18 US US684753A patent/US3035913A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3035913A (en) | 1962-05-22 |
BE561126A (en) | |
DE1063458B (en) | 1959-08-13 |
DE1066090B (en) | |
FR1147592A (en) | 1957-11-27 |
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