Patent US4678740A successfully refreshed from Google Patents.
US4678740A
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Method for making photographic mattes
Assignee: Individual
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Filing: 1985-04-29
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Granted: 1987-07-07
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Expires: 2005-04-29
Abstract
Abstract A photographic matte for use in traveling matte photography is formed by recording a separation of a first screen-color separation of an image on a first film layer and recording a separation of a different second color on a second layer. Preferably, the second color is complementary to the screen color. One layer is developed to form a positive image and the other to form a negative image, these images reinforcing each other. One image is formed by black dye, using a coupler and a color developer and the other is formed by a black dye destruct technique in which the developed portion of the silver halide emulsion is removed. According to another aspect of the invention, a matte of increased density can be formed without commensurate image growth by combining a black dye image with a silver image.
Inventors
- 👤 James N. Catania
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:29
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/28; G03B; G03B15/00; G03B15/08; G03C7/30; Y; Y10; Y10S; Y10S430/00; Y10S430/153
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
99 words
For use in traveling matte photography, a process for making a photographic matte corresponding to an image of a foreground and a screen of a predetermined screen color, comprising: recording a screen color separation of said image on a first layer of a photographic film; recording a separation of a second and different color on a second layer of said film that is coextensive with said first layer; and developing one of said layers to form a positive image and developing the other of said layers to form a negative image, whereby said images overlie and reinforce each other.
Claim 2
Dependent Claim
99 words
For use in traveling matte photography, a process for making a photographic matte corresponding to an image of a foreground and a screen of a predetermined screen color, comprising: recording a screen color separation of said image on a first layer of a photographic film; recording a separation of a second and different color on a second layer of said film that is coextensive with said first layer; and developing one of said layers to form a positive image and developing the other of said layers to form a negative image, whereby said images overlie and reinforce each other.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein said second color is complementary to said screen color.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein said screen color is blue and said second color is yellow.
Claim 5
Dependent Claim
31 words
The process of claim 1 wherein one of said layers is subjected to color development using a dye coupler and the other of said layers is subjected to black dye-destruct development.
Claim 6
Dependent Claim
14 words
The process of claim 4 wherein said dye coupler is a black dye coupler.
Claim 7
Dependent Claim
21 words
The process of claim 4 wherein: said screen color is blue; and said first layer is positioned above said second layer.
Claim 8
Dependent Claim
11 words
The process of claim 6 wherein said second color is yellow.
Claim 9
Dependent Claim
24 words
The process of claim 1 wherein: said first layer is subjected to color development; and said second layer is subjected to black dye-destruct development.
Claim 10
Dependent Claim
24 words
The process of claim 1 wherein; said first layer is subjected to black dye-destruct development; and said second layer is subjected to color development.
Claim 11
Dependent Claim
98 words
For use in traveling matte photography, a process for making a photographic matte corresponding to an image of a foreground and a screen of a predetermined screen color, comprising: a first step of recording a screen color separation of said image on a first layer of a photographic film; a second step of recording separations of second and third colors on second and third layers of said film, respectively; and developing said layer or layers of one of said steps to form a positive image and developing the other said layer or layers to form a negative image.
Claim 12
Dependent Claim
98 words
For use in traveling matte photography, a process for making a photographic matte corresponding to an image of a foreground and a screen of a predetermined screen color, comprising: a first step of recording a screen color separation of said image on a first layer of a photographic film; a second step of recording separations of second and third colors on second and third layers of said film, respectively; and developing said layer or layers of one of said steps to form a positive image and developing the other said layer or layers to form a negative image.
Claim 13
Dependent Claim
21 words
The process of claim 10 wherein said screen color is blue and said second and third colors are green and red.
Claim 14
Dependent Claim
36 words
The process of claim 10 wherein the layer or layers of one of said steps is subjected to color development using a dye coupler and the other of said layers is subjected to black dye-destruct development.
Claim 15
Dependent Claim
23 words
The process of claim 10 wherein: said screen color is blue; and said first layer is positioned above said second and third layers.
Claim 16
Dependent Claim
94 words
A traveling matte photographic process comprising: photographing a foreground against a screen of a color excluded from said foreground; producing a color transparency of the image thus photographed; passing light through said transparency onto a matte-producing film and thus recording a screen color separation of said image on a first layer of said film and recording a separation of a second and different color on said second layer of said film; and developing one of said layers to form a positive image and developing the other of said layers to form a negative image.
Claim 17
Dependent Claim
94 words
A traveling matte photographic process comprising: photographing a foreground against a screen of a color excluded from said foreground; producing a color transparency of the image thus photographed; passing light through said transparency onto a matte-producing film and thus recording a screen color separation of said image on a first layer of said film and recording a separation of a second and different color on said second layer of said film; and developing one of said layers to form a positive image and developing the other of said layers to form a negative image.
Claim 18
Dependent Claim
15 words
The process of claim 14 wherein said second color is complementary to said screen color.
Claim 19
Dependent Claim
17 words
The process of claim 14 wherein said screen color is blue and said second color is yellow.
Claim 20
Dependent Claim
31 words
The process of claim 14 wherein one of said layers is subjected to color development using a dye coupler and the other of said layers is subjected to black dye-destruct development.
Claim 21
Dependent Claim
38 words
The process of claim 14 wherein: said screen color is blue; said first layer is positioned above said second layer; said first layer is subjected to color development; and said second layer is subjected to black dye-destruct development.
Claim 22
Dependent Claim
22 words
The method of claim 18 wherein said transparency is a negative and said matte is dense in the areas of said foreground.
Claim 23
Dependent Claim
24 words
The process of claim 14 wherein: said first layer is subjected to color development; and said second layer is subjected to black dye-destruct development.
Claim 24
Dependent Claim
33 words
The method of claim 14 wherein said film includes a third layer on which a third color separation is recorded, said third layer being developed by the same technique as said second layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |