Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1998-03-02
2000-10-03
Moses, Richard
Incremental printing of symbolic information
Ink jet
Ejector mechanism
B47J 205
Patent
active
061262765
ABSTRACT:
A printhead used to eject fluid onto a recording medium has an integrated heat-sink which is used to cool the energy dissipation elements used to propel the fluid from the printhead. The printhead is comprised of a semiconductor substrate that has been processed with thin-film layers. On top of the thin-film layers is an orifice layer that has a pattern of orifices. Fluid feed channels, on the side of the printhead opposite the orifice, supply fluid to the pattern of orifices. Within the thin-film layers are energy dissipating elements which are used to transfer energy to the fluid thereby ejecting fluid from the orifice. The fluid is transferred to the orifice opening through fluid feed slots formed in the thin-film layer adjacent to the energy dissipation elements which is exposed in the fluid feed channel. An integrated heat-sink is attached to the energy dissipation elements to remove heat to the semiconductor substrate and the fluid supply in the fluid feed channel.
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Beerling Timothy
Davis Colin C.
Kawamura Naoto
Knight William R.
Seaver Richard
Hewlett--Packard Company
Jenski Raymond A.
Meyers Timothy F.
Moses Richard
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