Browse Prior Art Database

Ink Ribbon Testing Device

IP.com Disclosure Number: IPCOM000051406D
Original Publication Date: 1981-Jan-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Dean, RH: AUTHOR

Abstract

An ink ribbon testing device is employed to measure the forces required to remove measured portions of ink from an ink ribbon.

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Ink Ribbon Testing Device

An ink ribbon testing device is employed to measure the forces required to remove measured portions of ink from an ink ribbon.

Ink ribbon 11 is mounted adjacent shutter window 13 and is exposed to abrasive particles, such as silica sand, hurled from spinning wheel 15 when shutter 17 is in the position depicted. Sand 19 loaded in hopper 21 flows with a constant flow rate onto the spinning wheel 15. Spinning wheel 15 has radial veins 23 extending thereabout and is rotated at a constant velocity by motor 25. Since wheel speed and sand flow rate are constant, the abrasive force applied to the ink surface of ribbon 11 is controlled by the exposure time as effected by shutter
17. The ink removed by abrasion is measured by an optical scanning device, such as an image analyzer, and correlated with the abrasive force required to effect such ink removal.

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