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Glass Nozzle Fabrication for Ink Jet

IP.com Disclosure Number: IPCOM000088795D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Tsao, SH: AUTHOR

Abstract

In the fabrication of glass nozzles for ink jet, the glass capillaries 10, having nozzles 11 in the center thereof, may be slightly oversized or undersized, but are generally uniform within an array. If the capillaries were normally touching, the nozzle-to-nozzle spacing is equal to the capillary diameter. Thus, undersized or oversized capillaries would result in nozzle misplacement.

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Glass Nozzle Fabrication for Ink Jet

In the fabrication of glass nozzles for ink jet, the glass capillaries 10, having nozzles 11 in the center thereof, may be slightly oversized or undersized, but are generally uniform within an array. If the capillaries were normally touching, the nozzle-to-nozzle spacing is equal to the capillary diameter. Thus, undersized or oversized capillaries would result in nozzle misplacement.

By using smaller capillaries which are spaced apart, uniformly sized spacer rods 12 may be used to establish the spacing. Specifically, the pressure generated by flat plate cap 13, which is held down on the spacer rods in a plane parallel to the bottom of the slot 14, causes the nozzle-to-nozzle spacing to be uniform over the entire array. The amount of the spacing is thus no longer determined by the capillary diameter, but rather by the accuracy of the width of the slot 14.

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