US2367551A - Photographic material - Google Patents

Photographic material Download PDF

Info

Publication number
US2367551A
US2367551A US437155A US43715542A US2367551A US 2367551 A US2367551 A US 2367551A US 437155 A US437155 A US 437155A US 43715542 A US43715542 A US 43715542A US 2367551 A US2367551 A US 2367551A
Authority
US
United States
Prior art keywords
sensitive
green
coupler
developable
color
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
Application number
US437155A
Other languages
English (en)
Inventor
John A C Yule
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
Priority to FR961824D priority Critical patent/FR961824A/fr
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US437156A priority patent/US2382690A/en
Priority to US437155A priority patent/US2367551A/en
Application granted granted Critical
Publication of US2367551A publication Critical patent/US2367551A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G03C7/18—Processes for the correction of the colour image in subtractive colour photography

Definitions

  • RED SENS/T/VE W/TH MAGENTA COUPLER RED ⁇ SENS/T/VE WITH CYAN COUPLER.
  • This invention relates to photosensitive materials and particularly to materials used for color reproduction.
  • prints may be made therefrom either in the form of color separation records for use in photomechanical processes or in the form of multilayer subtractive color records.
  • such a material is multilayer and is made up of a plurality oi parts each of which consists of one or more or the layers.
  • One part is sensitive to green light only by suitable sensitization and filtering, and this part contains color couplers developable to a color which absorbs blue and transmits green light.
  • Such a color in one embodiment is yellow; in another embodiment it is green.
  • Another part of the material is sensitive to primary red light only and contains couplers developable to blue.
  • couplers consist of those compounds having a reactive methylene group or phenolic hydroxyl group so that they couple with the development product of a primary aromatic amino developing agent to give different colors depending on which coupler is selected.
  • the redsensitive part of the material consists of twov layers, one of which contains a coupler developable to magenta, and the other of which contains a coupler developable to cyan.
  • the green-sensitive part in the embodiment in which the green-sensitive part is to be developed to green, it may be made of two layers, one developable to yellow and the other to cyan.
  • one embodiment of the present invention has the green and redsensitive parts developable to equal equivalent games.
  • the fact that both parts are developable to the same equivalent gamma simultaneously also means that a neutral gray area in the record being masked will reproduce as a neutral gray in the mask itself which thus permits a convenient check on whether the processing of the mask is proceeding properly.
  • the equivalent gamma of a dye image is the neutral gramma it would have it just suflicient of the complementary dye or dyes is added to give a neutral color.
  • any other method of defining the gamma of a color layer depends on the hue of the illuminating light, and hence, is not as definite as the characteristic called. "equivalent gamma.
  • the layer developable to cyan is arranged to give a slightly reduced gamma compared to the other layers when all three layers are developed simultaneously.
  • this multi-layer material is provided with an adhesive on one surface so that it may be attached to the multi-colored record being copied during exposure and processing of the mask and during printing from the record thus masked.
  • Fig. 1 illustrates a general form of the invention
  • Fig. 2 is similar to Fig. 1 but has an adhesive coating:
  • Figs. 3, 4, 5, and 6 respectively illustrate various forms of the embodiment shown in Fig. 1.
  • a support l0 such as the usual film base carries two layers Ii and I2 of which the lower one is sensitive to red light and contains a coupler so as to be developable preferably to blue or at least to a color which transmits blue and absorbs green.
  • the upper layer I2 is sensitive to green light and contains couplers so as to be developable to yellow or green.
  • the sensitization of the layers may involve suitable filtering such as red illter between the two layers and/or a yellow filter on top of the upper layer to cut 01! blue light.
  • these same sensitive layers are carried on a thin support I! having an adhesive I4 on the other surface thereof so that the material may be attached to the multi-color record through which it is to be exposed.
  • the support It acts to protect the record while the layers liiand II are being processed.
  • the upper layer i2 is green-sensitive with a yellow or green coupler as in Fig. 1, but the red-iaensitive part consists of two layers ii and II with'cyan and magenta couplers respectively.
  • the blue coupler of layer ii in Fig. 1 may bemade up of cyan and magenta couplers.
  • Fig. 4" is similar to Fig. l in that the lower layer is red-sensitive with a blue coupler which may comprise magenta and cyan couplers in the different layers as in Fig. 3 and the green-sensitive layer contains a coupler which absorbs blue and transmits green.
  • the terms "transmit” and “absorb are used only relatively meaning “transmit to a high degree” or “absorb to a high degree, since no dye absorbs any color completely or transmits any color completely.
  • the important feature of Fig. 4 is that the two parts, whether made of two or more layers, are developable to the same equivalent gamma. This has been shown to give satisfactory color correction in most color reproduction processes.
  • the green-sensitive layer specifically contains a yellow coupler (the other embodiment being the case wherein it contains a green;coupler), the yellow and blue are complementary so that a gray area in the record being masked reproduces as gray in this mask
  • the gray scale which is often incorporated into or along side a multi-colored record to be printed will in this embodiment reproduce as neutral gray, thus giving a convenient check on the processing of the mater al.
  • a red-sensitive layer containing a cyan coupler is made of slightly less contrasty material than the layers II and 22 containing magenta and yellow couplers respectively.
  • the upper layer 22 may contain either a yellow or green coupler depending on what type of color correction is desired; 1. e., on whether correction of blue by green and green by red only are desired, or whether correction of red by green is also desired.
  • the red-sensitive part is divided into two layers I I and II as in F'g.
  • the greensensitive part is also divided into two sensitive layers containing cyan and yellow couplers respectively.
  • the possibility of having the green part in two layers and the red-senstive part in one layer only with a blue coupler might be considered, but since blue couplers are rare, the splitting of the red-sensitive part into two layers is more useful than the splitting of the green-sensitive part which in general is not nece-ary since both yellow and green couplers are well known and are satisfactory.
  • a multi-layer material for making a universal color correcting mask negative to the exposing light comprising one part which is sensitive to green light and is not sensitive to red light and which contains color couplers developable to a color which absorbs blue and transmits green and another part of which is sensitive to red light and is not sensitive to green light and is in two layers one of which contains a coupler developable to magenta and the other of which contains a coupler developable to cyan.
  • a multi-layer material for making a universal color correctng mask negative to the exposing light comprising one part which is a layer sensitive to green light and is not sensitive to red light and which contains a yellow coupler and another part which is sensitive to red light and is not sensitive to green light and is in two layers respectively containing magenta and cyan couplers, the cyan layer being developable simultaneously with the other two layers to a gamma slightly less than that of either of said other two layers.
  • a multi-layer material for making a universal color correcting-mask negative to the exposing light the sensitive layers of said material consisting solely of one part which is sensitive'to green light and is not sensitive to red light and which contains color couplers developable to a color which absorbs blue and transmits green and another part which is sensitive to red light and is not sensitive to green light and which conta ns color couplers developable to a color which absorbs green and transmits blue, said couplers being developable simultaneously to complementary colors and including a yellow coupler in the green sensitive part, a magenta coupler in the red sensitive part and a cyan coupler in only one of sa d parts.
  • a multi-layer material for making a universal color correcting mask negative to the exposing light the sensitive layers of said material consisting solely of one part which is sensit've to green light and is not sensitive to red light and which contains a yellow coupler and another part which is sensitive to red light and is not sensitive to green light and which contains two color couplers one developable to cyan and the other simultaneously developable to magenta.
  • a multi-layer material for making a universal color correcting mask negative to the exposing light the senstive layers of said material consisting solely of one part which is sensitive to green light and is not sensitive to red light and which contains two couplers one developable to cyan and the other simultaneously to yellow and another part which :s sensitive to red light and is notsensitive to green light and which contains a magenta coupler.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US437155A 1942-04-01 1942-04-01 Photographic material Expired - Lifetime US2367551A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR961824D FR961824A (is") 1942-04-01
US437156A US2382690A (en) 1942-04-01 1942-04-01 Color reproduction
US437155A US2367551A (en) 1942-04-01 1942-04-01 Photographic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US437155A US2367551A (en) 1942-04-01 1942-04-01 Photographic material

Publications (1)

Publication Number Publication Date
US2367551A true US2367551A (en) 1945-01-16

Family

ID=23735304

Family Applications (1)

Application Number Title Priority Date Filing Date
US437155A Expired - Lifetime US2367551A (en) 1942-04-01 1942-04-01 Photographic material

Country Status (2)

Country Link
US (1) US2367551A (is")
FR (1) FR961824A (is")

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487858A (en) * 1948-02-28 1949-11-15 Eastman Kodak Co Process of making a photographic mask of high isoelectric point gelatin
US2596677A (en) * 1947-12-06 1952-05-13 Eastman Kodak Co Method for making masks for photographic transparencies
US2659671A (en) * 1949-03-31 1953-11-17 Gevaert Photo Prod Nv Color photographic element
US2686122A (en) * 1947-03-07 1954-08-10 Harold C Purdy Photographic light-sensitive element
US2708625A (en) * 1951-01-19 1955-05-17 Gen Aniline & Film Corp Photographic element for the production of subtractive color images by sulfonhydrazide color development
US2875058A (en) * 1955-10-12 1959-02-24 Eastman Kodak Co Supersensitization of photographic emulsions using triazines
US2933390A (en) * 1955-10-12 1960-04-19 Eastman Kodak Co Supersensitization of photographic silver halide emulsions
US2945762A (en) * 1955-10-12 1960-07-19 Eastman Kodak Co Supersensitization of photographic emulsions using triazines
US3121232A (en) * 1954-12-15 1964-02-11 United States Radium Corp Color radiographic film
US3162533A (en) * 1960-10-03 1964-12-22 Gevaert Photo Prod Nv Method and means for controlling photographic masks and color selections
US3234023A (en) * 1959-01-14 1966-02-08 Gevaert Photo Prod Nv Colored photographic masks
US4011078A (en) * 1972-01-14 1977-03-08 Xerox Corporation Photosensitive member and method of imaging

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686122A (en) * 1947-03-07 1954-08-10 Harold C Purdy Photographic light-sensitive element
US2596677A (en) * 1947-12-06 1952-05-13 Eastman Kodak Co Method for making masks for photographic transparencies
US2487858A (en) * 1948-02-28 1949-11-15 Eastman Kodak Co Process of making a photographic mask of high isoelectric point gelatin
US2659671A (en) * 1949-03-31 1953-11-17 Gevaert Photo Prod Nv Color photographic element
US2708625A (en) * 1951-01-19 1955-05-17 Gen Aniline & Film Corp Photographic element for the production of subtractive color images by sulfonhydrazide color development
US3121232A (en) * 1954-12-15 1964-02-11 United States Radium Corp Color radiographic film
US2875058A (en) * 1955-10-12 1959-02-24 Eastman Kodak Co Supersensitization of photographic emulsions using triazines
US2933390A (en) * 1955-10-12 1960-04-19 Eastman Kodak Co Supersensitization of photographic silver halide emulsions
US2945762A (en) * 1955-10-12 1960-07-19 Eastman Kodak Co Supersensitization of photographic emulsions using triazines
US3234023A (en) * 1959-01-14 1966-02-08 Gevaert Photo Prod Nv Colored photographic masks
US3162533A (en) * 1960-10-03 1964-12-22 Gevaert Photo Prod Nv Method and means for controlling photographic masks and color selections
US4011078A (en) * 1972-01-14 1977-03-08 Xerox Corporation Photosensitive member and method of imaging

Also Published As

Publication number Publication date
FR961824A (is") 1950-05-23

Similar Documents

Publication Publication Date Title
US2449966A (en) Integral mask for color film
GB982383A (en) Improved photosensitive films
US2367551A (en) Photographic material
US2252718A (en) Reversal process of color photography
US2258187A (en) Integral mask for multicolor film
US2376217A (en) Color photography
US2191038A (en) Photogrpahic color film and process
US2382690A (en) Color reproduction
US2294981A (en) Color correction
US2371746A (en) Photographic color correction process
US2224329A (en) Color photography
US2221025A (en) Color correction process and product
US3251689A (en) Masking film
US2413468A (en) Color correction of color pictures
US2393756A (en) Photographic color correction process
GB1051331A (is")
US2360214A (en) Sensitizing in color photography
US2763549A (en) False-color or false-sensitized photographic film containing colored couplers
US3162533A (en) Method and means for controlling photographic masks and color selections
GB1509425A (en) Light-sensitive colour photographic silver halide materia
US3186841A (en) Method of influencing the gradation of color-photographic printing material
US2289738A (en) Color correction
US2571698A (en) Photographic masking process
US3411905A (en) Photographic masking process
US2401699A (en) Sound image in multilayer film