US3741649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making multi-color slide transparencies with superimposed images
Assignee: HARCOURT BRACE JOVANOVICH
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Filing: 1971-04-05
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Granted: 1973-06-26
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Expires: 1991-04-05
Abstract
Abstract The process uses the steps of double exposing a film to two specifically selected colors for the purpose of achieving a third color on the transparency. After the film has been exposed to one color to provide a background color, a layer containing an image of a second different color is exposed to the film within the area of the background color so that a latent image of a third color is produced on the film corresponding to the image of the layer.
Inventors
- 👤 D Podesta
- 👤 E Fox
- 👤 M Neste
- 👤 J Cardlllo
- 👤 N Eisele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:33
CPC Classifications
G; G03; G03C; G03C11/00; G03C7/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
26 words
A process as set forth in claim 1 wherein said second latent image is of a relatively small size in relation to said first latent image.
Claim 2
Dependent Claim
17 words
A process as set forth in claim 1 wherein said second latent image is constituted by lettering.
Claim 3
Dependent Claim
89 words
In a process of producing a multi-color slide transparency wherein a film has a first latent image thereon of a color corresponding to a transparent gel the step of further exposing the film to a transparent gel of predetermined shape and different color from said first latent image within the area of said first latent image to produce a second latent image within said first latent image of a shape corresponding to said predetermined shape and of a color different from said first latent image and said transparent gel.
Claim 4
Dependent Claim
16 words
In a process as set forth in claim 4 wherein said second latent image constitutes lettering.
Claim 5
Dependent Claim
21 words
In a process as set forth in claim 4 wherein said second latent image is smaller than said first latent image.
Claim 6
Dependent Claim
161 words
A process of producing a multi-color slide transparency comprising the steps of positIoning a first layer in a predetermined position aligned with a film, said first layer having an unexposed transparent area therein of a predetermined shape defined by a transparent gel of a first color; exposing said transparent area to said film to form a first latent image on said film corresponding to said predetermined shape and said first color; thereafter aligning a second layer with the exposed film, said second layer having a transparent area therein of a predetermined shape defined by a transparent gel of a second color; and exposing said transparent area of said second layer to said film within the area of said first latent image to produce a second latent image on said film, within said first latent image of a shape corresponding to said transparent area on said second layer, and of a third color different from said first color and said second color.
Claim 7
Dependent Claim
27 words
A process as set forth in claim 7 wherein said transparent areas of said first and second layers is each surrounded by a background of opaque black.
Claim 8
Dependent Claim
18 words
A process as set forth in claim 8 wherein said transparent area of said second layer constitutes lettering.
Claim 9
Dependent Claim
18 words
A process as set forth in claim 8 wherein said transparent area of said second layer constitutes intergers.
Claim 10
Dependent Claim
21 words
A process as set forth in claim 7 wherein said second latent image is substantially smaller than said first latent image.
Claim 11
Dependent Claim
140 words
In a process of producing a multi-color slide transparency the steps of positioning at least one first layer of transparent colored gel in alignment with an unexposed film; exposing a predetermined area of said film to at least a portion of said first layer to form a first latent background image on said film within said predetermined area of a color corresponding to said one layer; thereafter positioning at least one second layer of transparent colored gel of a different color from said first layer in approximate alignment with the exposed film; and exposing at least a portion of said predetermined area of said film to at least a portion of said second layer to form a second latent image, within and over said background image on said film, of a third color different from said colors of said layers.
Claim 12
Dependent Claim
30 words
A process as set forth in claim 12 wherein a plurality of layers of colored transparent gels are initially aligned with said film and exposed to said predetermined area therein.
Claim 13
Dependent Claim
35 words
A process as set forth in claim 13 wherein said plurality of layers are of different colors and said first latent background image is of a color corresponding to a mixture of said different colors.
Claim 14
Dependent Claim
30 words
A process as set forth in claim 12 wherein a plurality of layers of colored transparent gels of the same color are subsequently exposed to form said second latent image.
Claim 15
Dependent Claim
74 words
A process of producing a multi-color transparency wherein exposed film having a first latent image thereon of a color corresponding to a transparent gel or combination of gels is further exposed to a transparent gel or combination of gels of such shape and color as to produce a second latent image with overlap between the two images, the image color where there is overlap being different from the color where there is not overlap.
References Cited (Backward Citations)
US1840524A
Cited
US3000737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |