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US 4,857,398 AGranted
Electrosensitive recording
AssigneeDennison Manufacturing Company
InventorsJohn A. Hill, III, Richard G. Miekka, Norman B. Cohen
Life of this patent
Estimating the term…
Abstract
Electrosensitive recording using a composite structure formed by a base support, a resinous contrast layer containing silicon dioxide and a lubricating agent, and a vapor deposited metallic surface. The electrosensitive substrate provides improved print quality for information recorded by electrically actuated stylii, with reduced debris accumulation.
Claims15
An electrosensitive recording material comprising:
- (a) a support,
- (b) a coating layer upon said support comprising a film-forming resin, a hydrophobic lubricating agent, and a filler selected from the class consisting of acicular particles of silica and acicular particles of silicates, said acicular particles having a hardness on the MOH scale of betweem about 3.0 and 8.0, said filler further comprising amorphous silicon dioxide, wherein said acicular particles have an average particle size between about 2.0 and 8.0 microns and the amorphous silicon dioxide has an average particle size of between about 2.0 and 9.0 microns, said hydrophobic lubricating agent selected from the class consisting of an organic C.sub.4 to C.sub.22 fatty acid and the metal salt of an organic C.sub.4 to C.sub.22 fatty acid, and
- (c) a metallic layer vapor-deposited upon said coating layer,
- wherein the surface of said metallic layer is vaporized selectively along points of contract of a stylus on the metallic layer as said stylus is electrically activated thereon exposing points of the underlying coating layer (b) forming a visual recording on the surface of the electrosensitive recording material.
1 more element
An electrosensitive recording material comprising:
- (a) a base member,
- (b) a coating layer upon said base member comprising a film-forming resin, a hydrophobic lubricating agent, and a filler comprising an acicular silicate having a hardness on the MOH scale between about 3.0 and 8.0,
- said acicular silicate comprising the mineral wollastonite, said filler further comprising amorphous silicon dioxide, said hydrophobic lubricating agent selected from the class consisting of an organic C.sub.4 to C.sub.22 fatty acid, and
- (c) a metallic layer vapor-deposited upon said coating layer,
- wherein the surface of said metallic layer is vaporized selectively along points of contact of a stylus on the metallic layer as said stylus is electrically activated thereon exposing points of the underlying coating layer (b) forming a visual recording on the surface of the electrosensitive recording material.
2 more elements
An electrosensitive recording material comprising:
- (a) a base member,
- (b) a coating layer upon said base member comprising a film-forming resin, a hydrophobic lubricating agent, and a filler comprising an acicular silica having a hardness on the MOH scale of between about 3.0 and 8.0,
- said acicular silica comprising diatomaceous earth, said filler further comprising amorphous silicon dioxide, wherein said acicular particles have an average particle size between about 2.0 and 8.0 microns and the amorphous silicon dioxide has an average particle size of between about 2.0 and 9.0 microns,
- said hydrophobic lubricating agent selected from the class consisting of an organic C.sub.4 to C.sub.22 fatty acid, and
- (c) a metallic layer vapor-deposited upon said coating layer, wherein the surface of said metallic layer is vaporized selectively along points of contact of a stylus on the metallic layer and said stylus is electrically activated thereon exposing points of the underlying coating (b) forming a visual recording on the surface of the electrosensitive recording material.
2 more elements
Dependencies are inferred from the claim text.