Browse Prior Art Database

METHOD OF MAKING CRT XEROGRAPHIC FACE PLATES

IP.com Disclosure Number: IPCOM000026343D
Original Publication Date: 1991-Jun-30
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 103K

Publishing Venue

Xerox Disclosure Journal

Abstract

A method of making xerographically developable cathode ray tubes (CRT) is disclosed. A known process for making CRT fiber optic face plates comprises: hsing multiple composite glass rods, having cores with a lower refractive index and glass shells with a higher refractive index (FIG. 1) to one another providing a single fused bundle; heating and laterally stretching the fused bundle into a new rod (FIG. 3) having approximately the same diameter as a single composite rod; cutting and fusing the stretched fused bundle into a second composite rod and repeating the steps of stretching, cutting and fusing until a desired rod density is achieved; slicing the final rod into hexagonally shaped platelets (FIG. 4); fusing edges of the hexagonal slices together forming a matrix; and finishing the matrix by grinding and polishing to provide a fiber optic face place (FIG. 5).

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XEROX DISCLOSURE JOURNAL

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METHOD OF MAKING CRT XEROGRAPHIC FACE PLATES Lloyd F. Bean

Proposed Classification US. C1.3551238
Int. C1. G03g 15/04

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FIG. 1 FIG. 2

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FIG. 5

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 3 May/June 1991 185

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METHOD OF MAKING CRT/XEROGRAPHIC FACE PLATES (Cont'd)

A method of making xerographically developable cathode ray tubes (CRT) is disclosed. A known process for making CRT fiber optic face plates comprises: hsing multiple composite glass rods, having cores with a lower refractive index and glass shells with a higher refractive index (FIG. 1) to one another providing a single fused bundle; heating and laterally stretching the fused bundle into a new rod (FIG. 3) having approximately the same diameter as a single composite rod; cutting and fusing the stretched fused bundle into a second composite rod and repeating the steps of stretching, cutting and fusing until a desired rod density is achieved; slicing the final rod into hexagonally shaped platelets (FIG. 4); fusing edges of the hexagonal slices together forming a matrix; and finishing the matrix by grinding and polishing to provide a fiber optic face place (FIG. 5).

A modification in the known process described above that enables the making of xerographic optical imaging surfaces consists of beginning with a multiple composite rod (FIG. 2) having a conductive core 1 encased in a first insulating glass claddi...