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FLEXIBLE CHARACTER BALL FOR AN IMPACT PRINTER MECHANISM

IP.com Disclosure Number: IPCOM000024219D
Original Publication Date: 1979-Dec-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 65K

Publishing Venue

Xerox Disclosure Journal

Abstract

A flexible character bearing ball 1 is made of a plurality of arcuate segments 2, each segment containing a character print element 3 as shown in the drawing. Upon compression of the ball in an axial direction, i.e., by pulling the shaft 4 down-wardly, the character elements will be forced radially outwardly. The character nearest the platen 5 will strike the ribbon 6 and urge it against the paper 7 to produce the selected character on the paper. Thus, it is necessary to implement only two controls; namely, rotation for character selection and axial compression for character recording .

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(EROX DISCLOSURE JOURNAL

FLEXIBLE CHARACTER BALL FOR AN IMPACT PRINTER MECHANISM
David D. Thornburg

Proposed Classification
U.S. Cl. 400/134.6 Int. Cl. B41j 1/54

A flexible character bearing ball 1 is made of a plurality of arcuate segments 2, each segment containing a character print element 3 as shown in the drawing. Upon compression of the ball in an axial direction, i.e., by pulling the shaft 4 down- wardly, the character elements will be forced radially outwardly. The character nearest the platen 5 will strike the ribbon 6 and urge it against the paper 7 to produce the selected character on the paper. Thus, it is necessary to implement only two controls; namely, rotation for character selection and axial compression for character recording .

As shown in the drawing a coaxial drive runs through the vertical axis of the flexible print ball I. A rotary driving mechanism in the form of a gear 8 rotates the outer tube 9 and may be connected to a stepping motor. An axial driving mechanism in the form of a simple linear solenoid (not shown) moves central shaft 4 vertically to drive the character elements 2 outwardly on downward movement. It should be apparent that ball replacement for changing fonts is extremely simple as by removing the cap 10 and sliding the ball 1 off the coaxial driving elements 4 and 9.

Volume 4 Number 6 November/December 1979 813

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Number 4 Volume XEROX 814 DISCLOSURE JOURNAL

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