Ink jet printhead and method of making

Details Ink jet printhead and method of making Ink jet printhead and method of making

1996-03-27

1998-08-04

Lund, Valerie

Incremental printing of symbolic information

Ink jet

Ejector mechanism

216 27, B41J 214

Patent

active

057901511

ABSTRACT:
An ink jet printhead includes a nonconductive substrate into which a plurality of tapered nozzle holes are formed with the wide hole area coincident with an ink entry side and with the marrow hole area coincident with an ink exit side, and with an ink reservoir mounted on the ink entry side. A metal layer covers the interior of each nozzle hole, and also provides an electrical control-signal conductor on the ink entry side for each metallized nozzle hole. The metal layer also provides a tubular metal extension for each metallized nozzle, these extensions extending a common distance beyond the ink exit side. A plurality of metal conductors may be provided on the ink exit side to facilitate nozzle control using signal-multiplexing techniques, or a field compensation electrode may be provided on the ink exit side.

REFERENCES:
patent: 4169008 (1979-09-01), Kurth
patent: 4528070 (1985-07-01), Gamblin
patent: 4542386 (1985-09-01), Delligatti et al.
patent: 4716423 (1987-12-01), Chan et al.
patent: 4728392 (1988-03-01), Miura et al.
patent: 4801995 (1989-01-01), Iwanishi
patent: 5006202 (1991-04-01), Hawkins et al.
patent: 5041190 (1991-08-01), Drake et al.
patent: 5598195 (1997-01-01), Okamoto et al.

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