Browse Prior Art Database

BI LAMINAR INK JET APERTURE PLATE FORMATION

IP.com Disclosure Number: IPCOM000024621D
Original Publication Date: 1981-Jun-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 61K

Publishing Venue

Xerox Disclosure Journal

Abstract

In nickel electroforming ink jet aperture plates, the most accurate apertures are formed when the plate is still quite thin. To strengthen the plate, it is desirable to plate another layer over the original layer while preventing metal deposition immediately adjacent the previously formed apertures. By mounting the single layer plate 2 on a gas plenum 4 in a nickel bath 6, gas bubbles 8 can be formed at each aperture to prevent plating at the apertures. The size of the gas bubbles can be controlled by controlling both gas temperatures and gas pressure. A cross section of a portion of the two layer aperture plate would appear as in Figure 2 wherein the first layer 2 with optimized aperture 10 therein has a second layer 12 thereon with enlarged openings 14 where the gas bubble prevented plating of the second layer.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

BI LAMINAR INK JET APERTURE PLATE FORMATION
William G. Herbert
Robert P. Altavela

Proposed Classification US. CI. 346/75
Int. C1. Gold 15/18

FIG 1

2\

FIG 2

Volume 6 Number 3 May/June 1981 119

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Page 2 of 2

BI LAMINAR INK JET APERTURE PLATE FORMATION (Contld)

In nickel electroforming ink jet aperture plates, the most accurate apertures are formed when the plate is still quite thin. To strengthen the plate, it is desirable to plate another layer over the original layer while preventing metal deposition immediately adjacent the previously formed apertures. By mounting the single layer plate 2 on a gas plenum 4 in a nickel bath 6, gas bubbles 8 can be formed at each aperture to prevent plating at the apertures. The size of the gas bubbles can be controlled by controlling both gas temperatures and gas pressure. A cross section of a portion of the two layer aperture plate would appear as in Figure 2 wherein the first layer 2 with optimized aperture 10 therein has a second layer 12 thereon with enlarged openings 14 where the gas bubble prevented plating of the second layer.

120 XEROX DISCLOSURE JOURNAL

Volume 6 Number 3 May/June 1981

[This page contains 1 picture or other non-text object]