Patent US3798037A successfully refreshed from Google Patents.
US3798037A
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Photographic coloring element and process
Assignee: Individual
•
Filing: 1971-08-11
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Granted: 1974-03-19
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Expires: 1991-08-11
Abstract
Abstract A film for producing a color image from a monochromatic image comprising at least a first layer of emulsion having a color coupler for producing a negative or a positive image in a first color of the monochromatic image. A second layer of emulsion has a second type of color coupler for producing an image in a second color with luminances reversed with respect to the image formed in the first layer. The two additional layers of emulsion each contain the same type of color coupler so that the two additional layers produce a positive masked negative image or a negative masked positive image of the monochromatic image in a third color whereby the developed film produces a colored image of the monochromatic image. A novel process for producing the colored image from the monochromatic image is also disclosed.
Inventors
- 👤 A Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:06
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/16; G03C1/00; G03C1/005; G03C1/46; G03C7/00; G03C7/30; G03C7/3029; Y; Y10; Y10S; Y10S430/00; Y10S430/141
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
20 words
A photosensitive element as in claim 1, and a film supporting layer for supporting said four silver halide emulsion layers.
Claim 2
Dependent Claim
60 words
A photosensitive element as in claim 1, in which said one and other silver halide emulsion layers are fabricated of low contrast material with a long exposure range and a disposition toward underexposure and Underdevelopment, and said two silver halide emulsion layers are fabricated of high contrast material with a short exposure range and a disposition toward overexposure and overdevelopment.
Claim 3
Dependent Claim
36 words
A photosensitive element as in claim 2, in which the bottommost two silver halide emulsion layers are separated by a gelatine layer and the uppermost two silver halide emulsion layers are separated by a gelatine layer.
Claim 4
Dependent Claim
17 words
A photosensitive element as in claim 1, in which said four silver halide emulsion layers are panchromatic.
Claim 5
Dependent Claim
26 words
A photosensitive element as in claim 1, in which said four silver halide emulsion layers are sensitive to the same spectral region other than visible light.
Claim 6
Dependent Claim
26 words
A photosensitive element as in claim 1, in which the bottommost two silver halide emulsion layers are thicker than the uppermost two silver halide emulsion layers.
Claim 7
Dependent Claim
16 words
A photosensitive element as in claim 2, in which said element further comprises an anti-halation layer.
Claim 8
Dependent Claim
140 words
A photosensitive element for producing a colored image from a monochromatic source image and the like comprising at least a first layer silver halide emulsion having a color coupler for producing a negative image of said source image in a first color out of the colors cyan, magenta and yellow; second and third layer silver halide emulsions having the same color coupler for producing a negative image and a positive image both of said source image in a second color of said colors cyan, magenta and yellow; and a fourth layer silver halide emulsion having a color coupler for producing a positive image of said source image in a third color of said colors cyan, magenta and yellow; said second and third layers producing images having a contrast different from the images produced in the other two of said layers.
Claim 9
Dependent Claim
28 words
A photosensitive element as in claim 9, and a color filter between said second and third layers for preventing the passage of light of a preselected color therethrough.
Claim 10
Dependent Claim
18 words
A photosensitive element as in claim 10, and a film support between said filter and said second layer.
Claim 11
Dependent Claim
22 words
A photosensitive element as in claim 9, in which said first and second layers are thicker than said third and fourth layers.
Claim 12
Dependent Claim
38 words
A photosensitive element as in claim 9, in which said first and fourth layer emulsions include means for producing extremely low contrast images, and said second and third layer emulsions include means for producing extremely high contrast images.
Claim 13
Dependent Claim
21 words
A photosensitive element as in claim 13, in which said first layer is mounted on an antihalation layer comprising colloidal silver.
Claim 14
Dependent Claim
33 words
A photosensitive element as in claim 7, in which said uppermost two silver halide emulsion layers are separated from said bottommost two silver halide emulsion layers by a filter layer comprising colloidal silver.
Claim 15
Independent Claim
157 words
The method of producing a colored image from a monochromatic source image which comprises exposing to said source image a photosensitive element having four light-sensitive layers of silver halide and color couplers in each of said layers thereon and which is capable of producing in different layers a low contrast positive image in a first color of the colors cyan, magenta and yellow, a high contrast positive image and a high contrast negative image both in the same second color of the colors cyan, magenta and yellow, and a low contrast negative image in a third color of the colors cyan, magenta and yellow; developing the photosensitive element in an ordinary non-staining first developer, a second exposure of only the top two layers, developing the photosensitive element in a second developer which produces four dye images in said first, second and third colors associated with silver images; and removing the silver images and any remaining silver halide.
Claim 16
Dependent Claim
32 words
The method of claim 16, in which said silver images and silver halide are removed by treating said element with a bleaching solution, and thereafter subjecting said element to a fixing bath.
Claim 17
Dependent Claim
26 words
The method of claim 16, wherein the Element is subjected to a neutralizing solution after treating said element with the first developer, and the second developer.
Claim 18
Dependent Claim
45 words
The method of claim 16, in which the second exposure of said film or paper element is made from the top with a light source having a color which is absorbed by a color filter situated between the second and third layers of said element.
Claim 19
Dependent Claim
29 words
A photosensitive element as in claim 1, in which said four silver halide emulsion layers comprise emulsions selectively sensitive to red and blue, green and blue, blue, and blue.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |