Browse Prior Art Database

Laminated Ink Jet Head

IP.com Disclosure Number: IPCOM000086962D
Original Publication Date: 1976-Nov-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Bassous, E: AUTHOR [+4]

Abstract

This is a laminated silicon ink jet head structure which performs the combined functions of jet formation, synchronization, charging and charge tunnel venting.

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Laminated Ink Jet Head

This is a laminated silicon ink jet head structure which performs the combined functions of jet formation, synchronization, charging and charge tunnel venting.

An ink resevoir 2 has a silicon nozzle plate 4 mounted thereon. One of a plurality of nozzles 6 is etched in the plate 4 using standard silicon etching techniques. A synchronizing electrode 8 of opposite conductivity type than the nozzle 6 is formed thereon by any suitable processing technique.

A silicon charge electrode structure 10, having a plurality of charge electrodes 12 and 14 formed therein and including a vent 16 is aligned with and bonded to the nozzle plate 4 by any suitable bonding technique.

The charge electrode structure is fabricated by first etching a depression into one side of the silicon substrate for forming the vent 16. The individual charge electrodes are formed by etching through from the opposite side to the vent, and then doping the interior of the individual charge electrodes with an opposite conductivity type of material.

The flow of air through the vent results in stable operation of the ink jet system.

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