Browse Prior Art Database

ROTATING SHUTTER SCANNER

IP.com Disclosure Number: IPCOM000025017D
Original Publication Date: 1983-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 86K

Publishing Venue

Xerox Disclosure Journal

Abstract

Present Raster Input Scanners (RIS) employ a Charge Coupled Device (CCD) for scanning a document line by line, the CCD providing a sequential digital output of image signals representing the document image. A lens is used to collect and minify the image line to CCD length, and mirrors are provided to guide the image rays from the document to the CCD via the lens, the mirrors serving additionally to provide a small package configuration.

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Page 1 of 2

:EROX DISCLOSURE JOURNAL

ROTATING SHUTTER SCANNER Proposed Classification William Kingsley U.S. C1. 358/202

Int. C1. H04n 3/04

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V x -

F.6 2

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Volume 8 Number 2 March/April 1983

155

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

Page 2 of 2

ROTATING SHUTTER SCANNER (Cont'd)

Present Raster Input Scanners (RIS) employ a Charge Coupled Device (CCD) for scanning a document line by line, the CCD providing a sequential digital output of image signals representing the document image. A lens is used to collect and minify the image line to CCD length, and mirrors are provided to guide the image rays from the document to the CCD via the lens, the mirrors serving additionally to provide a small package configuration.

The configuration and concept described and illustrated in Figures 1 and 2 of the drawing is intended to further reduce package size and to reduce cost yet still provide a sequential digital output.

In Figures 1 and 2, a Constant Velocity Transport (CVT) roll 5 is provided for moving the document 6 to be scanned across a scanning slit 7. A pair of lamps 8 illuminate a line-like portion of document 6 through slit 7. A gradient index lens array 9 focuses the image rays reflected from the document line onto a collector mechanism 10, the collector mechanism comprising a light collecting tube 11 disposed internally of a rotating drum 12. As shown in Figure 2, drum 12 has a series of holes 14 therein extending at an angle to the direction of drum rotat...