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Fabrication of Slotted Charge Structures for Ink Jet Printing

IP.com Disclosure Number: IPCOM000086572D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Hoekstra, JP: AUTHOR [+3]

Abstract

A method of fabricating slotted charge-electrode structures, for an ink jet printer, from insulating materials. Suitable insulating materials are paper phenolic, machinable glass ceramic, and the like.

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Fabrication of Slotted Charge Structures for Ink Jet Printing

A method of fabricating slotted charge-electrode structures, for an ink jet printer, from insulating materials. Suitable insulating materials are paper phenolic, machinable glass ceramic, and the like.

A single insulating workpiece 2 or a plurality of such insulating work pieces, as illustrated, may be packaged together and mounted in a milling machine (not shown). A saw blade 4 or a ganged saw may be used to cut slots 6 in the workpieces. After the slots 6 are cut, trenches 8 (Fig. 2) are cut into the face 10 of each workpiece. Typically, a trench is about 10 mils deep and about 100 mils long, with a trench being cut by the same blade that is used to cut the slots. Since the trenches are cut with a saw blade, the step from the bottom of the trench 8 to the surface 10 is curved, as illustrated at 12 in Fig. 3.

Next, the charge electrode structure is metallized as follows. Each workpiece is sensitized, copper-plated and then nickel-plated. The slots and trenches are packed with a protective material such as black wax to protect and mechanically support the respective trenches and slots. All surfaces of the workpiece are lapped to remove metal therefrom, with metal being left only in the slots and trenches. Accordingly, each trench and slot has well-defined metal surfaces, with adjacent slots and trenches being isolated from one another.

A mask is then used to lay down leads from each trench to pads (not...