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US 4,149,887 AGranted
Photography utilizing micro-capsular materials
OwnerSidney Levyinventor
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OwnerSidney Levyinventor
Estimating the term…
A micro-capsular material for use as a photographic reproducing medium includes a plurality of micro-capsules distributed over a given surface. Each of the capsules is formed with a mantle of light transmissive material. The mantles may be clear or colored and are advantageously transparent. The contents of each of the capsules includes a photoconductive material as well as a color progenitor or precursor material. Simultaneous exposure of the capsular material to light and high frequency electrical energy causes rupture of the capsule mantles and release of the capsular contents. When an image is focused by a lens onto the surface, selected ones of said capsules are ruptured to thereby result in a reproduction of the image. Dispersing micro-capsules having different color progenitor materials makes possible color photography when means are provided for selectively directing only those component of colored light onto the micro-capsules having corresponding color progenitor materials. In this manner, only the desired micro-capsules are ruptured which include color progenitor materials corresponding to the light components impinging thereon.
Micro-capsular material for use as a photographic reproducing medium, said material comprising a plurality of micro-capsules, each of said capsules being provided with a mantle of light transmissive material, each of said capsules encapsulating photoconductive means within said capsular mantle to rupture said capsular mantle for selectively releasing its contents in a predetermined area when said capsular mantle is simultaneously exposed to light and high frequency electrical energy of predetermined levels, electrical resistivity of the encapsulated photoconductive means being decreased upon the exposure to light to increase absorption of the high frequency electrical energy for raising internal temperature and pressure within said capsular mantle to rupture said capsular mantle, said photoconductive means including a photoconductive material.
A photographic reproducing material comprising an electrically non-conductive base layer, a coating of micro-capsules on said base layer, each of said capsules being provided with a mantle of light transmissive material, each of said capsules encapsulating photoconductive means within said capsular mantle to rupture said capsular mantle for selectively releasing its contents in a predetermined area when said capsular mantle is simultaneously exposed to light and high frequency electrical energy of predetermined levels, electrical resistivity of the encapsulated photoconductive means being decreased upon the exposure to light to increase absorption of the high frequency electrical energy for raising internal temperature and pressure within said capsular mantle to rupture said capsular mantle, said photoconductive means including a photoconductive material and a color progenitor, whereby selective application of light from an image on said base layer causes only those micro-capsules exposed to the predetermined light level to rupture with attendant dispersion of the color progenitor on said base layer to thereby form a reproduction of the image on said base layer.
Dependencies are inferred from the claim text.