US2318007A - Light-sensitive material - Google Patents
Light-sensitive material Download PDFInfo
- Publication number
- US2318007A US2318007A US312983A US31298340A US2318007A US 2318007 A US2318007 A US 2318007A US 312983 A US312983 A US 312983A US 31298340 A US31298340 A US 31298340A US 2318007 A US2318007 A US 2318007A
- Authority
- US
- United States
- Prior art keywords
- layers
- light
- layer
- colored
- sensitive
- 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 - Lifetime
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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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials
Definitions
- the present invention relates to a process for producing photographic dye ⁇ images by local removal of the dye from homogenously colored layers that contain photographic silver images produced in silver halide emulsion layers colored complementarily to the sensitivity ofthe layer.
- the process comprises the local removal of the dye from a multilayer material, the layers of which are carried by a transparent support, at least one layer containing identical silver images produced by exposure of the layer from both sides thereof.
- the invention further relates to a multilayer light-sensitive material comprising several co1- ored light-sensitive layers for carrying out the process and for producing multicolor photographs by direct exposure in an appropriate camera or by printing.
- the dye present in the layer absorbs the light rays of the color for which the emulsion has been sensitized and if the dye possesses the concentration requisite for the production of intensely colored pictures, its absorption limitsthe extures obtained are ilat and of unsatisfactory appearance.
- a multilayer material such as shown in the drawing is used, the layers orwhich are dyed complementary to the sensitivity of the layer and the material is adapted to be exposedfrom both sides.
- one side of a transparent support is coated with a magenta-dyed green-sensitive silver halide emulsion layer I and superimposed on this layer there is a second yellow-dyed, blue-sensitive layer 2.
- a red-.sensitive layer 3 dyed bluegreen and superposed on this is coated a yellowdyed blue-sensitive layer 4.
- the whole -material thus consists of a support and :four layers in three basic colors. one of which, i. e. yellow is present in the opposite surface layers Z and i on both sides of the material.
- the followingdyes may be employed: for the magenta layer Benzopurpurine 10 B (Schultz Farbstoitabellentechnik 1931, '7th ed., vol. 1, No. 489)l in a concentration of .4 grm. per sq., m.; for the bluegreen layer Pontamine Sky' Blue 6 BX (Schultz. loc. cit., No. 510) in a concentration of .5 grm. per sq. m. and for each yellow dyed layer Chrysophenine G ⁇ (Schultz loc. cit., No. 726) in a concentration of .5 grm. per sq. m.
- Exposure is effected in a camera provided with a system of Amirrors that permits of coincident images being taken from both sides.
- Cameras of this type are already known, for example from Brewsters U. S. Patent No. 1.253,13'7 and therefore there is no need to describe them in detail.
- the material may also be. employed as a printing material in order to obtain multicolor pictures by printing. To this end lthe material is exposed to the multicolor master image, ⁇ for ex- Va. colored printing light composed of blue light,
- two of said emulsion layers being sensitive to b1ue ⁇ light and colored yellow, the third being colored magenta and sensitive to green light, the
- magenta colored layer and said blue-green colored layer being arranged between said two yellow colored layers, the arrangement and coloring of the layers forming said material being such that the layers superposed with respect tosaid magenta colored layer and said blue-green colored layer are transmittant for both freen and red ⁇ light introduced from either side of said material, and the dyes in said magenta colored layer and said blue-green colored layer being sufficient in concentration for natural reproduction of a multicolor Iimage when taken together with the dye in said two yellow colored layers.
- a light sensitive material for color photography comprising a plurality of superposed silver halide layers each predominantly sensitive to a different portion of the visible spectrum and diffusely dyed complementarily to their respective sensitivities with dyes which are resistant to ordinary photographic treating solutions but .capable of being bleached with the aid of a meof said layers from the other side oi said material the same part image recorded therein by said first recording to intensify the latent silver image obtained by said first recording, developing said images, and destroying the dyestuff in said layers -in proportion to said developed silver images.
- the layers of said main'ing layers a natural color muticolor image may be produced which comprises, exposing said material from one side to form a color separation image in each of the layers of said set.
- the method of making multicolor photographic images in a light sensitive material including four superposed light sensitive silver halide layers dyed with dyes which are resistant to ordinary photographic treating solutions but capable of being bleached with the aid of a metallic silver image, two of said emulsion layers layers are tranmittant for light to which said intermediate layers are sensitive when said light is introduced from either side lof said material, and the dyes in each of said colored layers being of such a concentration that when taken in combination with the remaining layers a natural color muticolor image may be produced.
- a method of making multicolor photographic images in a material comprising a plurality of superposed silver hailde layers each predominantly sensitive to a dierent predetermined dyed complementarily to their'respective sensitivities with dyes which are resistant to ordinary photographic treating solutions but capable portion of the visible spectrum and diiiusely tion image, which comprises, recording a color,
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB793/39A GB523507A (en) | 1939-01-10 | 1939-01-10 | Light-sensitive material for multicolour photography |
Publications (1)
Publication Number | Publication Date |
---|---|
US2318007A true US2318007A (en) | 1943-05-04 |
Family
ID=9710591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US312983A Expired - Lifetime US2318007A (en) | 1939-01-10 | 1940-01-08 | Light-sensitive material |
Country Status (4)
Country | Link |
---|---|
US (1) | US2318007A (de) |
BE (1) | BE437589A (de) |
FR (1) | FR862646A (de) |
GB (1) | GB523507A (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2635960A (en) * | 1950-04-18 | 1953-04-21 | Gen Aniline & Film Corp | High-speed silver dye bleachout taking and printing film |
-
0
- BE BE437589D patent/BE437589A/xx unknown
-
1939
- 1939-01-10 GB GB793/39A patent/GB523507A/en not_active Expired
- 1939-12-30 FR FR862646D patent/FR862646A/fr not_active Expired
-
1940
- 1940-01-08 US US312983A patent/US2318007A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2635960A (en) * | 1950-04-18 | 1953-04-21 | Gen Aniline & Film Corp | High-speed silver dye bleachout taking and printing film |
Also Published As
Publication number | Publication date |
---|---|
BE437589A (de) | |
FR862646A (fr) | 1941-03-11 |
GB523507A (en) | 1940-07-16 |
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