Method for production of liquid ejecting head unit

Details Method for production of liquid ejecting head unit Method for production of liquid ejecting head unit

2011-04-19

2011-04-19

Banks, Derris H (Department: 3729)

Metal working

Piezoelectric device making

C029S890100

Reexamination Certificate

active

07926153

ABSTRACT:
The invention provides a method of producing a liquid ejecting head unit that has a plurality of liquid ejecting heads combined with one another. Each of the plurality of liquid ejecting heads has a fluid channel formation substrate, which has pressure generation chambers that are in communication with nozzle orifices through which liquid is ejected, and piezoelectric elements, each of which is made up of a lower electrode, a piezoelectric layer that has hysteresis characteristic in a polarization electric field, and an upper electrode, formed on the fluid channel formation substrate with a vibrating plate being interposed therebetween. The liquid ejecting head unit production method according to an aspect of the invention includes: acquiring coercive electric fields of the piezoelectric layers of the liquid ejecting heads; classifying the liquid ejecting heads into ranks on the basis of the acquired coercive electric fields; and combining the liquid ejecting heads that belong to the same rank together.

REFERENCES:
patent: 2006/0090337 (2006-05-01), Yasui
patent: 2001-162811 (2001-06-01), None
patent: 2003-243741 (2003-08-01), None

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