Electroforming optical disk stampers

Electroforming optical disk stampers

ELECl"ROFORMING OPTICAL DISK STAMPERS U.S. Patent 5,843,296. Dec. 1, 1998 A. Greenspan, assignor to Digital Matrix, Hempstead, N.Y. A method for ele...

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ELECl"ROFORMING OPTICAL DISK STAMPERS

U.S. Patent 5,843,296. Dec. 1, 1998 A. Greenspan, assignor to Digital Matrix, Hempstead, N.Y.

A method for electroforming an optical disk stamper by controlling the uniformity of deposition onto a mandrel. POWDER COATING SYSTEM

U.S. Patent 5,843,515. Dec. 1, 1998 G.W. Crum et al., assignors to Nordson Corp., Westlake, Ohio

A distributed control system for a powder coating apparatus. SELECTIVE PLATING PROCESS

U.S. Patent 5,843,517. Dec. 1, 1998 D. Ferrier et al., assignors to MacDermid Inc., Waterbury, Conn.

A process for the activation of me-

tallic surfaces for the reception of plating thereupon comprising contacting with an activator solution of precious metal ions and an oxidizing agent, which oxidizing agent is selected from the group consisting of persulfates, peroxides, and mixtures thereof and wherein the metallic surfaces are in proximity to plastic surfaces and both the metallic and plastic surfaces are contacted with the activator solution but only the metallic surfaces are effectively activated for the reception of plating thereupon. COATING MATERIAL DISPENSING AND CHARGING SYSTEM

U.S. Patent 5,843,536. Dec. 1, 1998 J.A. Scharfenberger et al., assignors to Ransburg Corp., Indianapolis

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A coating m a t e r i a l dispensing and charging system comprising first electrical conductors extending between first electrically nonconductive supporting members; a power supply; means for coupling the power supply across the first conductors and articles to be coated to maintain a high magnitude electrostatic potential difference across a space defined between the first conductors and the articles; a dispenser for dispensing the coating material into the space; a supply of coating material; and means for supplying the coating material from the coating material supply to the dispenser; t h e first electrical conductors comprising electrically conductive filaments, the electrically conduc-

11111 DUCT AND FITTINGS

Sludge drying technology

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W A T R O P U R CORP, Sludge drying technology 1931 Industrial Drive, Libertyville, IL 60048, USA Call (847) 367-5150, Fax (847) 367-1787, www.watropur.com Circle 155 on reader information card

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FABCO PLASTICS WHOLESALE (ONTARIO) LIMITED 2175A Teston Road, Maple (Toronto) Ontario Canada L6A 1T3 Phone (905) 832-0600, Fax (905) 832-0992 E-mail: [email protected] Wet) Site: www.fabcoplastics.com

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