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Passivation for Ink Jet Charge Plates

IP.com Disclosure Number: IPCOM000088952D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Olsen, CE: AUTHOR

Abstract

An ink jet charge plate for a multinozzle array is shown.

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Passivation for Ink Jet Charge Plates

An ink jet charge plate for a multinozzle array is shown.

Ink jet printing works on the principle of selectively deflecting charged drops. This charging must be accomplished as the drop breaks off from the stream of ink.

Referring to the figure, in multinozzle arrays a charge tunnel 12 is provided for each ink stream and an array of the charge tunnels is included in a charge plate 10. Each of the charge tunnels includes a continuous conductive coating extending on the side surfaces 14 and the bottom surface 16. A conductor 18 is provided to conduct the charge voltage to each of the charge tunnels. To prevent electrochemical attack on the ends 20 of the conductors near the charge tunnel, a passivation coating 22 is provided which covers all of the conductors 18 including ends 20 and the bottom surface 16 of the charge tunnel. A suitable material for the passivation coating is glass.

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