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THIN FILM ELECTROLUMINESCENT LINE ARRAY EMITTER/PRINTER

IP.com Disclosure Number: IPCOM000025898D
Original Publication Date: 1988-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 4 page(s) / 140K

Publishing Venue

Xerox Disclosure Journal

Abstract

The line array emittedprinter disclosed is similar in design to the array emitter and printer disclosed in USP 4,535,341. Figs. 1 and 2, respectively, are the side and top view of a single emitter from a electroluminescent line array comprising a plurality of emitters, e.g.! a pattern of 64 aligned emitters. Two thin film transistors are employed to drive each electroluminescent light emitter. The emitter comprises a layer of ZnS:Mn sandwiched between layers of Y203. The nontransparent metal aluminum electrodes drive the emitter. Thus, light created by the applied electric field cannot exit the emitter in direction perpendicular to the plane of the emitter layers but instead is guided to form an output at the emitter end facets. The resultant effect is to expand the output intensity of the array line emittedprinter by a factor of ten and confine the output to a narrow light emission cone 10, as illustrated in Figs. 1 and 2. Such a line array emitter output would be acceptable for use in conjunction with exposure of a xerographic drum at standard print speeds.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

THIN FILM E LECTRO LU MINE SCENT LINE ARRAY EMITTE R/P RINTE R
G. A. Neville Connell Benjamin Kazan

Proposed Classification

U.S. C1.346/107K Int. C1. Gold 9/42

WLSED 200v

   UGHT EMISSION CONE

/W

10

EMISSION UGHT CONE

10

FIG. 1

PULSED 200v

Fie. 2

Volume 13 Number 6 NovernbedDecember 1988 29-3

[This page contains 1 picture or other non-text object]

Page 2 of 4

THIN FILM ELECTROLUMINESCENT LINE ARRAY EM ITTE R/P R INT E R (Cont'd)

L

I G

H T

0

U

1

P U

T

BOlTOM Al ELECTRODE

ELECTROLU MIN E SCENT DEVICE

FIG. 3

     XEROX DISCLOSURE JOU WNAL
Volume 13 Number 6 November/December 1988

294

[This page contains 1 picture or other non-text object]

Page 3 of 4

THIN FILM ELECTROLUMINESCENT LINE ARRAY EM ITTE RIP R 1 NTE R (Cont'd)

The line array emittedprinter disclosed is similar in design to the array emitter and printer disclosed in USP 4,535,341. Figs. 1 and 2, respectively, are the side and top view of a single emitter from a electroluminescent line array comprising a plurality of emitters, e.g.! a pattern of 64 aligned emitters. Two thin film transistors are employed to drive each electroluminescent light emitter. The emitter comprises a layer of ZnS:Mn sandwiched between layers of Y203. The nontransparent metal aluminum electrodes drive the emitter. Thus, light created by the applied electric field cannot exit the emitter in direction perpendicular to the plane of the emitter layers but instead is guided to form an output at the emitter end facets. The resultant effect is to expand the output intensity of the array line emittedprinter by a factor of ten and confine the output to a narrow light emission cone 10, as illustrated in Figs. 1 and 2. Such a line array emitter output would be accepta...