Ink jet tip assembly
AssigneeGould Inc.
InventorLaszlo Halasz
Life of this patent
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Abstract
An ink jet tip assembly in which the individual jets are comprised of a piezoelectric cylinder having a longitudinally through bore, a glass ink nozzle disposed in the cylinder bore and a low melting temperature alloy interposed between the bore and the nozzle for anchoring the nozzle to the piezoelectric cylinder. The method of assembly for the individual jet tip assemblies comprises inserting the glass ink nozzle into the cylinder bore which contains the anchoring alloy in a molten form. A method of checking for flaws in the cylinder comprises fluxing the cylinder bore for allowing flux to pass through any cylinder pinholes or cracks. Upon introducing solder for coating the interior cylinder wall, some solder will appear as shining spots or areas on the cylinder exterior wall.
Claims10
In an ink jet printer tip assembly adapted for use in a drop-on-demand system including a piezoelectric element having a passage extending longitudinally therethrough;
- a glass ink nozzle received in said passage and dimensioned such that a gap is defined between the outer surface of said nozzle and the side wall of said passage over the cooperative lengths thereof;
- and an anchoring medium received in said gap for anchoring said nozzle within said piezoelectric element passage, the improvement comprising:
- said anchoring medium comprising a high modulus, electrically conductive, inorganic material having the property of expanding at least slightly upon changing from a liquid to a solid phase.
Dependencies are inferred from the claim text.