Electrosensitive recording material and process
First Claim
1. An electrosensitive coating upon which information can be permanently recorded by injection into the coating of electrons according to an electric information signal, said coating comprising uniformly dispersed in a binder, a semiconductor oxide with surface defects capable of forming color centers, a salt selected from the group consisting of bismuth salt and antimony salts, and an agent capable of forming a weak complex with said salt,said salt capable of combining with the surface defects of said semiconductor oxide in the presence of the complexing agent to form electron trapping centers which will produce color centers upon injection into such coating of electrons from a writing electrode or stylus.
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Accused Products
Abstract
An electrosensitive recording material has in a single electrosensitive layer a semiconductor oxide which may be doped or otherwise treated to have crystal surface defects, an antimony or bismuth salt and a complexing agent for modifying the electronic configuration of the salt, all components being uniformally dispersed in a binder. The sensitive layer is carried on an electrically conductive backing which is capable of generating positive charges. Permanent recordings of electrically relayed information signals are formed on the electrosensitive coating by injecting electrons from a writing electrode or stylus into the electrosensitive layer. The electrons create color centers at electron trapping centers formed when the bismuth and antimony salt complex combines with the surface defects of the semiconductor oxide.
Electrosensitive coating compositions, recording materials, recording method and apparatus are described.
8 Citations
19 Claims
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1. An electrosensitive coating upon which information can be permanently recorded by injection into the coating of electrons according to an electric information signal, said coating comprising uniformly dispersed in a binder, a semiconductor oxide with surface defects capable of forming color centers, a salt selected from the group consisting of bismuth salt and antimony salts, and an agent capable of forming a weak complex with said salt,
said salt capable of combining with the surface defects of said semiconductor oxide in the presence of the complexing agent to form electron trapping centers which will produce color centers upon injection into such coating of electrons from a writing electrode or stylus.
Specification