Browse Prior Art Database

METHOD TO REDUCE COATING DEFECTS

IP.com Disclosure Number: IPCOM000027494D
Original Publication Date: 1997-Apr-30
Included in the Prior Art Database: 2004-Apr-08
Document File: 2 page(s) / 49K

Publishing Venue

Xerox Disclosure Journal

Abstract

Described is a safe, cost effective method to reducehemove coating defects (mostly streakmg) from dip coated extruded aluminum bias shields and related coated components. Presently, the defect areas on the dried parts are touched up so that the parts will not possess any bare spots. This is a very time consuming and expensive procedure, and degrades part appearance.

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XEROX DISCLOSURE JOURNAL

METHOD TO REDUCE COATING DEFECTS

Proposed Classification Louis Reale U. S. C1. 4301059

Int. C1. G03g 05/06

Described is a safe, cost effective method to reducehemove coating defects (mostly streakmg) from dip coated extruded aluminum bias shields and related coated components. Presently, the defect areas on the dried parts are touched up so that the parts will not possess any bare spots. This is a very time consuming and expensive procedure, and degrades part appearance.

Streaking, and related defect reduction may be accomplished by utilizing high intensity ultrasonic energy generated from an ultrasonic welding horn immersed in the dip tank. This is a simple, low cost system that can provide a cost benefit as well as an improvement in part quality. Both low and high frequency energy may be used. One mechanism believed responsible for the effect is liquid micro circulation around part surfaces. The micro circulation removes any point defects, which tend to initiate streaking type defects.

DP5560

XEROX DISCLSOURE JOURNAL - Vol. 22, NO. 2 MarcidApril 1997 109

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110 XEROX DISCLSOURE JOURNAL - Vol. 22, NO. 2 Ma~WApril1997

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