Browse Prior Art Database

Reversible Jet Nozzle

IP.com Disclosure Number: IPCOM000081603D
Original Publication Date: 1974-Jul-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Vesci, A: AUTHOR

Abstract

Clogs in an ink jet nozzle can be easily removed by providing a rotatable nozzle mounting, so that the nozzle can be subjected to reverse flow.

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Reversible Jet Nozzle

Clogs in an ink jet nozzle can be easily removed by providing a rotatable nozzle mounting, so that the nozzle can be subjected to reverse flow.

A print head assembly 1, connected to a pressurized ink supply via duct 2, has a rotatable cylinder 3 holding nozzle 4. The nozzle is seated in counterbore 5 within cylinder 3, and communicates with the ink supply through duct 6 therein and duct 7 in the print head body 1. Cylinder 3 is fitted with slotted head 8 for 180 degrees rotation in the event the nozzle 4 becomes clogged. This enables the nozzle to be back-flushed to thereby remove accumulated debris. Stops 9 provide accurate positioning for both printing and back-flushing.

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