Liquid droplet jetting head

Details Liquid droplet jetting head Liquid droplet jetting head

2011-04-12

2011-04-12

Lepisto, Ryan (Department: 2883)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S047000, C347S050000, C347S068000, C347S069000, C347S070000, C347S072000

Reexamination Certificate

active

07922304

ABSTRACT:
An ink-jet head includes a channel unit in which a channel is formed, a piezoelectric unit, and a wiring unit stacked on the piezoelectric unit. The wiring unit has a substrate, an individual supply-terminal group which includes a plurality of individual supply-terminals, a common supply-terminal, and an isolative covering layer, which is stacked on a surface of the substrate facing the piezoelectric unit. In the covering layer, a trap groove which runs between the individual supply-terminals and the common supply-terminal, and surrounds the individual supply-terminal group is formed. Accordingly, there is provided a liquid droplet jetting head which is capable of preventing a shorting between the individual drive electrodes of the piezoelectric unit, and between the individual supply-terminals of the wiring unit, due to the liquid entered from outside.

REFERENCES:
patent: 6966635 (2005-11-01), Miyata et al.
patent: 7008048 (2006-03-01), Sakaida
patent: 10-303517 (1998-11-01), None
patent: 2006-44196 (2006-02-01), None

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