| US 7,578,580 B2 | ||
| Inkjet head with conductive elastic member for electrical continuity between remote contacts in same | ||
| Atsushi Ito, Nagoya (Japan); Yasuhiro Kato, Nagoya (Japan); Naoya Okazaki, Gifu-ken (Japan); and Masayuki Takata, Nagoya (Japan) | ||
| Assigned to Brother Kogyo Kabushiki Kaisha, Nagoya-Shi (Japan) | ||
| Filed on Sep. 27, 2005, as Appl. No. 11/236,085. | ||
| Claims priority of application No. 2004-279396 (JP), filed on Sep. 27, 2004. | ||
| Prior Publication US 2006/0066675 A1, Mar. 30, 2006 | ||
| Int. Cl. B41J 2/16 (2006.01); B41J 2/05 (2006.01) | ||
| U.S. Cl. 347—50 [347/57] | 24 Claims |
| 1. An inkjet head for ejecting ink droplets in an inkjet manner, comprising:
a nozzle unit having a plurality of metal thin plates and a piezoelectric device, adapted to eject the ink droplets;
a printed circuit board supplying to the piezoelectric device a drive signal for causing the nozzle unit to eject the ink
droplets;
a support supporting the nozzle unit and the printed circuit board in opposing relationship to each other;
an earth contact disposed on the nozzle unit;
a ground contact disposed on the printed circuit board, held at a reference potential;
an electrically conductive elastic member disposed between the earth contact and the ground contact, such that a first portion
of the elastic member electrically contacts the earth contact, while a second portion of the elastic member electrically contacts
the ground contact, to thereby provide electrical continuity between the earth contact of the nozzle unit and the around contact
of the printed circuit board, both of which are electrically held at the reference potential; and
a movement limiter limiting movement of the elastic member, to thereby prevent the elastic member from being disengaged from
the earth and ground contacts.
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