Browse Prior Art Database

FULL FRAME ILLUMINATION

IP.com Disclosure Number: IPCOM000025508D
Original Publication Date: 1985-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 60K

Publishing Venue

Xerox Disclosure Journal

Abstract

Figures 1 and 2 show a top perspective and side view, respectively, of a full frame illumination device which can be used to illuminate a document placed on a platen surface. Figure 1 shows an imaging system comprising a platen/illuminator assembly 10 and a full frame lens array 12 comprising a plurality of lenslets 13. Assembly 10 includes a transparent glass platen 14 having phosphor dot pattern 16 formed on a transparent electrode layer 18. The lower part of the assembly comprises a second transparent glass platen 20 having a blocker dot pattern 22 formed on a second transparent electrode 23 aligned with the phosphor dot pattern. Plates 14 and 20 are connected by an enclosed chamber 24 filled with rare gas.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 98% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

FULL FRAME ILLUMINATION Proposed Charles 3. Urso Classification

U.S. C1. 355/8 Int. CI. G03g 15/28

Volume 10 Number 5 September/October 1985 30 I

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

Page 2 of 2

FULL FRAME ILLUMINATION (Cont'd)

Figures 1 and 2 show a top perspective and side view, respectively, of a full frame illumination device which can be used to illuminate a document placed on a platen surface. Figure 1 shows an imaging system comprising a platen/illuminator assembly 10 and a full frame lens array 12 comprising a plurality of lenslets 13. Assembly 10 includes a transparent glass platen 14 having phosphor dot pattern 16 formed on a transparent electrode layer 18. The lower part of the assembly comprises a second transparent glass platen 20 having a blocker dot pattern 22 formed on a second transparent electrode 23 aligned with the phosphor dot pattern. Plates 14 and 20 are connected by an enclosed chamber 24 filled with rare gas.

When an electrical field is applied between electrode layers 18 and 23, the gas is excited, causing the phosphor dots to emit light upward towards the top of platen
10. Light reflected from the document passes through the pattern 16, 22 and is projected by lens array 12 forming a latent image of the document on photoreceptor belt 24.

A document placed on the platen surface is thus illuminated by light.

XEROX 302 DISCLOSURE JOURNAL

Volume 10 Number 5 September/October 1985

[This page contain...