Browse Prior Art Database

PIEZOELECTRIC DEVICE TO DRIVE AN INDEXING CARRIAGE

IP.com Disclosure Number: IPCOM000026065D
Original Publication Date: 1990-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Document File: 4 page(s) / 152K

Publishing Venue

Xerox Disclosure Journal

Abstract

Figure 1 illustrates an x-y scanner 10 comprising a fast scanning carriage 12 which operates bidirectionally scanning across the paper 11 and is mounted to an indexing carriage 13 which indexes transversely down the paper between scans.

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XEROX DISCLOSURE JOURNAL

PIEZOELECTRIC DEVICE TO Proposed Classification DRIVE AN INDEXING CARRIAGE
Int. U.S. Denis J. Stemmle C1.350/006.1

C1. G02b 26/10

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FIG. I

XEROX DISCLOSURE JOURNAL - Vol. 15, No. 1 January/February 1990 21

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PIEZOELECTRIC DEVICE TO DRIVE AN INDEXING CARRIAGE(Cont'd)

FIG. 2

I /25

I

I

I I I

26

FWO PIE20

FIG. 3

22 XEROX DISCLOSURE JOURNAL - Vol. 15, No. 1 January/February 1990

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

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PIEZOELECTRIC DEVICE TO DRIVE AN INDEXING CARRIAGE(Cont'd)

Figure 1 illustrates an x-y scanner 10 comprising a fast scanning carriage 12 which operates bidirectionally scanning across the paper 11 and is mounted to an indexing carriage 13 which indexes transversely down the paper between scans.

Figure 2 is a plan view of the scanner illustrating a drive mechanism for the indexing carriage wherein four piezoelectric devices 20 are mounted to the indexing carriage. Two of the piezoelectric devices 20 are mounted on an appropriate angle such as to propel the carriage in a forward direction relative to a fixed frame and the other two 21 are mounted at a different angle so as to propel the carriage in the reverse direction relative to the frame. Depending on the intended direction of travel, one of the two pairs of devices is vibrated at an appropriate frequency and amplitude. In the forward direction, the pair of peizoelectric devices may be mounted with a slight side angular bias as illustrated in the end view of Figure 3 such that they not only convey the carriage in the forward direction but also slightly sideways against a fixed reference wall 27. For the indexing motion the carriage must be stopped every fixed distance and held in position while the fast scan carriage containing the reading head and printing head scans across the document and copy paper. To accomplish this, two sheet metal stampings with precision stop tabs 26 are m...