Browse Prior Art Database

FULL FRAME DOCUMENT ILLUMINATION

IP.com Disclosure Number: IPCOM000025507D
Original Publication Date: 1985-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 110K

Publishing Venue

Xerox Disclosure Journal

Abstract

The figure shows a document and illumination imaging system 8. A document 10, lying on an optically transparent platen 12 is imaged by an integral full-frame, two-dimensional lens array 14 onto a photoreceptor belt 16. Array 14 comprises a plurality of optical fibers 20.

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 57% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

FULL FRAME DOCUMENT ILLUMINATION
Robert P. Loce
Thomas J. Hammond

Proposed Classification
U.S. Cl. 355/8
Int. Cl. G03g 15/28

8 I

Volume 10 Number 5 September/October 1985 299

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

Page 2 of 2

FULL FRAME DOCUMENT ILLUMINATION (Cont'd)

The figure shows a document and illumination imaging system 8. A document 10, lying on an optically transparent platen 12 is imaged by an integral full-frame, two-dimensional lens array 14 onto a photoreceptor belt 16. Array 14 comprises a plurality of optical fibers 20.

The optical fibers are separated from each other by an inter-fiber spacing material. On the object-side surface of array 14, the interstitial areas between the fibers are covered by a fluorescent layer 24. Array 14, positioned equidistant between platen 12 and photoreceptor 16 provides a 1:l image or a reduced or enlarged image of document 10 at the surface of belt 16. In operation, layer 24 is activated. The light from layer 24 creates a uniform level of illumination at the platen/document interface. The light is reflected from document 10 and is projected by fibers 20 as a number of overlapping erect images to form a latent image of the document on belt 16. The inter-fiber spacing parameter is selected so that the light reflected from document 10 yields a uniform exposure of the image. Belt 16 may be continuously moved, slowed down or stopped during the illumination pulsing, depending on the illumination requirements of the system. The latent image on belt 16 can then be developed, transferred to a recording substrate and the output copy fixed, as is known in the art.

There are several possible ways of exciting fluorescent layer 24. In a first method, a lamp, or series of lamps, is placed at the outer edges of the array. The ultravio1e.t radiation emitted by the lamp is incident on layer 24 causing it to emit the radiatio...