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US 4,024,298 AGranted
Method of providing storage dielectric of phosphor particles coated with secondary emissive material
AssigneeTektronix, Inc.
InventorRalph Allen Mossman
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Abstract
An improved method for manufacturing a charge image storage dielectric capable of bistable storage is described. The storage dielectric is made by coating phosphor particles with a secondary emissive-forming substance, and then heating the coated particles to form secondary emissive material and simultaneously bond it to the surface of the phosphor particles.
Claims8
A method of manufacture of a charge image storage dielectric capable of bistable storage of a charge image formed thereon, comprising the steps of:
- coating a plurality of particles of phosphor material with a secondary emissive-forming substance;
- and
- heating the coated phosphor particles to form a secondary electron emissive material from said substance and to bond said secondary emissive material to the outer surface of said phosphor particles whereby a storage dielectric is formed with said secondary emissive material being substantially uniformly distributed throughout said storage dielectric.
Dependencies are inferred from the claim text.