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CALIBRATION - TURN BAFFLE FOR A CVT

IP.com Disclosure Number: IPCOM000025755D
Original Publication Date: 1987-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 112K

Publishing Venue

Xerox Disclosure Journal

Abstract

In a constant velocity transport (CVT) system for a raster input scanning device, the necessity of close spacing of elements makes part placement a difficult task. The Figure demonstrates an arrangement which uses a surface of a baffle member for a calibration surface.

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XEROX DISCLOSURE JOURNAL

CALIBRATION - TURN BAFFLE FOR A CVT U.S. C1.355/50 Jack R. Hauber

Proposed Classification

Int. C1. G03b 27/48

1-

P

In a constant velocity transport (CVT) system for a raster input scanning device, the necessity of close spacing of elements makes part placement a difficult task. The Figure demonstrates an arrangement which uses a surface of a baffle member for a calibration surface.

Documents D to be scanned are advanced by feed rolls 10 and 12 along paper path generally indicated by the arrow 16. CVT roll 18 drives the document across a scanning aperture 19, where the document will be scanned by a scanning sensor array (not shown), as it incrementally asses by aperture 19.

spring biased finger member 20.

The document is held tightly dis osed against the sur P ace of CVT roll 18 by

Volume 12 Number 5 September/October 1987 245

          E pring biased finger member 20 may not, of course, extend too far along the roll or it will be visible to the scanning sensor array if it impinges on the optical path P. The document is illuminated at the scanning aperture by lamp 22. An adjustable baffle member 24 is provided

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CALIBRATION - TURN BAFFLE FOR A CVT (Cont'd)

along the paper path, immediately downstream from scanning aperture 19, to direct scanned documents either to feed out rolls 26 and 28 to exit the scanning device, or to a turn baffle 30 which directs the scanned documents to a tray 31 to be returned to the scanning system for second side scanning. Adjustable baffle member 24 is pivotably connected at a first end 32 to a baffle arm 34, and at a second end 36 to a slot slide 38 which extends across scanning...