Browse Prior Art Database

DUAL PLANE MAGNETIC CARRIAGE GUIDE

IP.com Disclosure Number: IPCOM000026282D
Original Publication Date: 1991-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 70K

Publishing Venue

Xerox Disclosure Journal

Abstract

The figure shows a raster input scanning carriage 10 arranged to be moved along guide rails 12, 14 placed in a plane beneath, and parallel to, an object plane. Magnets 16, 18, 20 are incorporated into the base of carriage 10 to provide an attractive force between carriage 10 and guide rails 12, 14. These attractive forces are designed to balance and neutralize forces associated with scan rates and side forces which tend to lift and or make carriage 10 move sideways. One rail will also have a perpendicular surface to the scanning plane and a magnet incorporated in the same 90 degree relationship in the base of carriage 10 to eliminate side-to-side motion. The hardened magnets 16, 18,20 provide a wear surface without the need for lubricant which is an added feature. This approach eliminates most of the difficult tolerance problems associated with using cylindrical bearings and a round shaft for linear applications.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

DUAL PLANE MAGNETIC CARRIAGE GUIDE
John H. Hinton
William J. Nowak

Proposed Classification
U.S. C1.355/235 Int. C1. G03g 15/28

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 1 January/February 1991 37

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Page 2 of 2

DUAL PLANE MAGNETIC CARRIAGE GUIDE(Cont'd)

The figure shows a raster input scanning carriage 10 arranged to be moved along guide rails 12, 14 placed in a plane beneath, and parallel to, an object plane. Magnets 16, 18, 20 are incorporated into the base of carriage 10 to provide an attractive force between carriage 10 and guide rails 12, 14. These attractive forces are designed to balance and neutralize forces associated with scan rates and side forces which tend to lift and or make carriage 10 move sideways. One rail will also have a perpendicular surface to the scanning plane and a magnet incorporated in the same 90 degree relationship in the base of carriage 10 to eliminate side-to-side motion. The hardened magnets 16, 18,20 provide a wear surface without the need for lubricant which is an added feature. This approach eliminates most of the difficult tolerance problems associated with using cylindrical bearings and a round shaft for linear applications.

REFERENCE


U.S. Patent No. 4,603,963 to Hinton et al. discloses an optical scanning carriage moving along rails with magnets incorporated to balance and neutralize forces between the carriage and rails.

38 XEROX DISCLOSURE JOURNAL...