Storage tube with target having conductive surface exposed through random cracks in dielectric coating

Claim 2

A storage target for storing an electron image comprising: a member of conductive material; and a coating of dielectric material deposited over said member by application of a slurry containing the dielectric material onto said member and drying said slurry so that random cracks are formed in said coating with said random cracks extending through said coating and exposing conductive areas of said member corresponding to said random cracks.

Claim 3

A storage target according to claim 1 wherein support means of nonconducting material is provided on which said member of conductive material is disposed.

Claim 4

A storage target according to claim 2 wherein said member of conductive material is a continuous layer on said support means.

Claim 5

A storage target according to claim 1 wherein said member of conductive material is a mesh having random-sized openings.

Claim 6

A storage target according to claim 1 wherein said member of conductive material is a mesh having the same-size openings.

Claim 7

An electron storage tube comprising: an evacuated envelope; a storage target within said envelope including conductive means and coating means of dielectric material deposited over said conductive means by application of a slurry containing the dielectric material onto said conductive means and drying said slurry so that random cracks are formed in said coating with said random cracks extending through said coating and exposing conductive areas of said conductive means corresponding to said random cracks; means mounting said storage target in position in said envelope; means electrically connecting said conductive means to the exterior of said envelope; writing means disposed within said envelope for providing a writing beam of high velocity electrons for impinging said storage target and for deflecting said writing beam across said storage target to produce an electron image on said dielectric material; and holding means disposed within said envelope for providing low velocity electrons substantially uniformly over said storage target thereby causing said electron image to be stored thereon for a time on said dielectric material.

Claim 8

An electron storage tube comprising: an evacuated envelope; a storage target within said envelope including conductive means and coating means of dielectric material deposited over said conductive means by application of a slurry containing the dielectric material onto said conductive means and drying said slurry so that random cracks are formed in said coating with said random cracks extending through said coating and exposing conductive areas of said conductive means corresponding to said random cracks; means mounting said storage target in position in said envelope; means electrically connecting said conductive means to the exterior of said envelope; writing means disposed within said envelope for providing a writing beam of high velocity electrons for impinging said storage target and for deflecting said writing beam across said storage target to produce an electron image on said dielectric material; and holding means disposed within said envelope for providing low velocity electrons substantially uniformly over said storage target thereby causing said electron image to be stored thereon for a time on said dielectric material.

Claim 9

An electron storage tube according to claim 6 wherein said mounting means comprises a light transparent glass face plate forming part of said envelope on which said storage target is mounted and said dielectric material is phosphor material.

Claim 10

An electron storage tube according to claim 6 wherein reading means is disposed in said envelope for scanning said storage target with a reading beam of electrons thereby producing an electrical readout signal on said conductive means corresponding to said electron image stored on said dielectric layer.

Claim 11

An electron storage tube according to claim 6 wherein said storage target is a bistable storage target so that said electron image can be stored thereon for an indefinite controllable time.

Claim 12

An electron storage tube according to claim 6 wherein said conductive means comprises a continuous film disposed on said mounting means.

Claim 13

An electron storage tube according to claim 6 wherein said conductive means comprises mesh means having random-size openings.

Claim 14

An electron storage tube according to claim 6 wherein said conductive means comprise mesh means having regular-size openings.

Claim 15

A direct-viewing storage target for storing an electron image and producing a light image corresponding to such electron image comprising: a light-transparent support member of electrical insulative material; a layer of conductive material disposed on one surface of said support member in the form of a continuous layer; and a storage dielectric coating of secondary emissive phosphor material deposited over said continuous conductive layer by application of a slurry containing the phosphor material onto said continuous conductive layer and drying said slurry so that random cracks are formed in said coating with said random cracks extending through said coating and exposing conductive areas of said continuous conductive layer corresponding to said random cracks.

Claim 16

A direct-viewing storage target for storing an electron image and producing a light image corresponding to such electron image comprising: a light-transparent support member of electrical insulative material; a layer of conductive material disposed on one surface of said support member in the form of a continuous layer; and a storage dielectric coating of secondary emissive phosphor material deposited over said continuous conductive layer by application of a slurry containing the phosphor material onto said continuous conductive layer and drying said slurry so that random cracks are formed in said coating with said random cracks extending through said coating and exposing conductive areas of said continuous conductive layer corresponding to said random cracks.

Claim 17

A mesh for use as an electrode in an electron discharge means comprising a planar member having electrically-conductive surfaces and random-shaped openings therethrough.

Claim 18

A mesh for use as an electrode in an electron discharge means comprising a planar member having electrically-conductive surfaces and random-shaped openings therethrough.