US 9,809,023 B2
Liquid ejecting device
Shohei Koide, Nagoya (JP); and Keita Hirai, Nagoya (JP)
Assigned to Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken (JP)
Filed by Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken (JP)
Filed on Mar. 31, 2016, as Appl. No. 15/86,480.
Claims priority of application No. 2015-189283 (JP), filed on Sep. 28, 2015.
Prior Publication US 2017/0087842 A1, Mar. 30, 2017
Int. Cl. B41J 2/14 (2006.01)
CPC B41J 2/14209 (2013.01) [B41J 2/14233 (2013.01); B41J 2002/14241 (2013.01); B41J 2002/14491 (2013.01); B41J 2202/18 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A liquid ejecting device, comprising:
a flow-path defining member in which a plurality of pressure chambers are formed;
a piezoelectric actuator constituted by a plurality of layers stacked on one another and including a piezoelectric layer, a common electrode disposed on one surface side of the piezoelectric layer, and individual electrodes disposed on another surface side of the piezoelectric layer, the piezoelectric actuator being superposed on the flow-path defining member and having through-holes communicating with the respective pressure chambers;
a plurality of annular conductors, each of which surrounds a periphery of a corresponding one of the through-holes, at least one of the plurality of layers being sandwiched between the annular conductors and the common electrode;
a liquid supply member in which a reservoir and supply paths are formed, the supply paths in communication with the reservoir and configured to supply the liquid to the respective pressure chambers through the respective through-holes; and
an adhesive interposed between the liquid supply member and the plurality of annular conductors,
wherein each of the annular conductors is connected to a terminal configured to be provided with a predetermined constant potential, and is exposed to a flow path defined by a corresponding one of the through-holes.