US3661579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recording and reproducing graphic information on processed photographic material
Assignee: Agfa Gevaert NV
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Filing: 1968-05-13
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Granted: 1972-05-09
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Expires: 1988-05-13
Abstract
Abstract Recording layers of the type disclosed in U.S. Pat. No. 3,476,937 are used for subtitling photographic film, particularly motion picture film. A heat and/or pressure sensitive layer of such type is applied as an over-coating on the film to be subtitled, exposed to a heat pattern according to the subtitle so as to reduce the water permeability of the heated areas thereof, contacted with an aqueous liquid chemically degrading the binder in such layers so that the layer is removed in the heated areas, after which the film which carries the developed photographic image in a conventional emulsion layer thereon is contacted with a liquid, which may be the same liquid used to chemically degrade the overlayer, which either degrades the binder of the conventional emulsion layer to permit removal thereof or bleaches the visible image-forming material, i.e., the developed silver image or colored dye image, in the emulsion layer, the degradation or bleaching effect taking place in the areas where the overlayer has been removed. The remaining areas of the overlayer can be finally removed by rubbing the same while wet with an aqueous liquid.
Inventors
- 👤 Marcel Nicolas Vrancken
- 👤 Louis Achilles Meeussen
- 👤 Daniel Alois Claeys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:10
CPC Classifications
G; G03; G03C; G03C11/00; G03C11/02; B; B41; B41M; B41M5/00; B41M5/26; B41M5/36; B41M5/366
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
25 words
The method of claim 1 wherein said emulsion layer includes a hydrophilic colloid binder and said bleaching solution chemically degrades the binder in both layers.
Claim 2
Dependent Claim
29 words
A method of recording and reproducing graphic information according to claim 2, wherein the said over-layer contains said dispersion in a ratio by volume of at least 50 percent.
Claim 3
Dependent Claim
23 words
A method of recording and reproducing graphic information according to claim 1, wherein said particles are synthetic polymer particles prepared by emulsion polymerization.
Claim 4
Dependent Claim
19 words
A method of recording and reproducing information according to claim 2, wherein the hydrophilic binder is soluble in water.
Claim 5
Dependent Claim
27 words
A method of recording and reproducing information according to claim 1, wherein the said over-layer contains an infrared and/or visible light-absorbing material converting absorbed light into heat.
Claim 6
Dependent Claim
37 words
A method of recording and reproducing information according to claim 6, wherein the said over-layer due to the presence of said light absorbing material absorbs at least 80 percent of the light to which it is exposed.
Claim 7
Dependent Claim
18 words
A method of recording and reproducing information according to claim 6, wherein said substance is finely divided carbon.
Claim 8
Dependent Claim
30 words
A method of recording and reproducing information according to claim 6, wherein said substance is present in dispersed state and has a particle size not greater than 0.1 Mu .
Claim 9
Dependent Claim
126 words
A method of recording and reproducing information according to claim 1, wherein the said over-layer is irradiated with electro-magnetic radiation in accordance with the non-image parts of graphic information to be recorded and wherein the over-layer contains or stands in heat-conductive relationship with at last one substance which absorbs in the recording material at least some of the light which irradiates such materials, and consequently yields heat energy; and the intensity and duration of the light radiation with which said material is irradiated is such that in consequence of the said absorption of light and yield of heat energy in the recording layer, the areas of said overlayer undergo a substantial decrease in water-permeability in accordance with the non-image parts of graphic information to be recorded.
Claim 10
Dependent Claim
29 words
A method of recording and reproducing information according to claim 10, wherein the image markings of the original during the exposure are in contact with the said surface layer.
Claim 11
Dependent Claim
34 words
A method of recording and reproducing information according to claim 11, wherein the said over-layer is irradiated for a period less than 10 1 second and with an energy of at least 0.1 Watt.sec/sq.cm.
Claim 12
Dependent Claim
35 words
A method of recording and reproducing information according to claim 10, wherein the exposure is carried out with light composed entirely of or substantially entirely of light waves with wavelengths less than 700 Mu .
Claim 13
Dependent Claim
40 words
A method of recording and reproducing information according to claim 1, wherein the photographic material which is coated with said over-layer is a positive black-and-white or positive color motion film and the graphic information to be recorded is a sub-title.
Claim 14
Dependent Claim
97 words
A method of recording and reproducing information according to claim 1, wherein the already processed photographic material is a black-and-white or color motion picture film containing negative images, and the over-layer is a black or colored opaque surface layer, which is exposed to heat and/or pressure in such a way that the parts of the surface layer that correspond to the image parts of the sub-title become less soluble in an aqueous liquid and the non-image parts are removed so as to leave a black or colored opaque relief pattern representing the sub-title on the said film.
Claim 15
Dependent Claim
35 words
A method of recording said reproducing information according to claim 1, wherein the binder of thE over-layer is poly(N-vinyl-pyrrolidone) and the binder of a silver halide emulsion layer of the developed photographic material is gelatin.
Claim 16
Dependent Claim
29 words
A method of recording and reproducing information according to claim 1, wherein the aqueous liquid for treating the over-layer contains a hypochlorite of an alkali or alkaline earth metal.
References Cited (Backward Citations)
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |