Browse Prior Art Database

Testing Technique for Damaged Carrier Coatings

IP.com Disclosure Number: IPCOM000089205D
Original Publication Date: 1977-Oct-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Crossan, SC: AUTHOR [+2]

Abstract

This article describes a method of checking for and determining the amount of exposed core material of a carrier with a damaged coating.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Testing Technique for Damaged Carrier Coatings

This article describes a method of checking for and determining the amount of exposed core material of a carrier with a damaged coating.

Carriers used in xerographic processes often are formed of a steel core having a coating material thereon. During use the coating can become damaged, thereby exposing the core. Damaged coatings adversely affect the performance of the carrier, so it is important to identify the extent of damage to the coating in any given sample of carrier material.

Accordingly, a sample of the coated carrier to be evaluated is immersed in a saturated aqueous solution of copper sulphate (CuSO(4) 6H(2)O) with about 0.1 percent of a wetting agent, such as TRITON-X-100*. A replacement reaction between any exposed steel and copper takes place. The copper brightly marks the areas of exposed steel, whereby the amount of these bright areas can be determined. From this, the amount of coating damaged, to such an extent that the steel core is exposed, can be determined. * Trademark of Rohm & Haas Co.

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