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Making Multi Ink Jet Nozzles and Charging Structures from a Single Sheet of Machinable Plastic

IP.com Disclosure Number: IPCOM000082229D
Original Publication Date: 1974-Oct-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Lane, R: AUTHOR [+2]

Abstract

Machinable plastics can be obtained in sheet form from 0.040 inch thickness and upwards. With reference to Fig. 1, such a plastic 2 of desired thickness is machined by mechanical means to provide one or more blind holes 4, whose die is that of the charging structure. The hole can be drilled by either a drill bit, a laser or an electron beam. The integrated nozzle charging structure can be fabricated in any desired array for multinozzle printing.

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Making Multi Ink Jet Nozzles and Charging Structures from a Single Sheet of Machinable Plastic

Machinable plastics can be obtained in sheet form from 0.040 inch thickness and upwards. With reference to Fig. 1, such a plastic 2 of desired thickness is machined by mechanical means to provide one or more blind holes 4, whose die is that of the charging structure. The hole can be drilled by either a drill bit, a laser or an electron beam. The integrated nozzle charging structure can be fabricated in any desired array for multinozzle printing.

If piezoelectric excitation is used for drop formation, then the walls of the charging plate need only be plated. In Fig. 2 a sheet of plastic 6 has a nozzle 8 plugged, and a metal 10 is deposited. The metal for the charging plate 12 and an electric lead 14 is masked, and the remaining metal etched away.

An inductive excitation structure is illustrated in Fig. 3. A plastic 16 has a nozzle 18 therein which is plugged. Metal 20 is deposited for forming excitation pads and connections. Next, an insulator 22 is deposited. Then a charging plate 24 is deposited; next a protection layer is deposited over the surface. Lastly, the plug is removed from the nozzle 18.

The advantages of a single structure for nozzles and charging plates are the elimination of registration, ease of handling, and lower cost.

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