Patent ID: 7896472

Claim:
A recording-head driving device for driving a recording head including a plurality of actuator sections each provided for performing a recording operation on a recording medium, the recording-head driving device comprising: a wiring board which is elongated in a longitudinal direction and which is to be connected, at a connected portion near to one of longitudinally opposite ends thereof, to the plurality of actuator sections of the recording head; and two drive-circuit units mounted on respective mount portions of the wiring board such that the connected portion of the wiring board at which the wiring board is connected to the plurality of actuator sections is interposed between the mount portions, in the longitudinal direction; wherein the wiring board includes: (a) a plurality of wires a part of which connects one of the two drive-circuit units and a part of the plurality of actuator sections, for supplying a drive signal from the one of the two drive-circuit units to the part of the plurality of actuator sections, and the rest of which connects the other of the two drive-circuit units and the rest of the plurality of actuator sections, for supplying a drive signal from the other of the two drive-circuit units to the rest of the plurality of actuator sections; and (b) a plurality of input terminals which are electrically connected to the two drive-circuit units and are provided on the other of the longitudinally opposite ends of the wiring board; wherein the wiring board further includes a pair of wires provided for applying, to the two drive-circuit units, a drive voltage for driving the plurality of actuator sections; wherein one of the pair of wires includes: (a) a pair of first portions each of which is connected to a corresponding one of the plurality of input terminals and which extend along respective opposite side end portions of the wiring board opposite to each other in the widthwise direction thereof; and (b) a second portion which connects, in a vicinity of the one of the longitudinally opposite ends of wiring board, the pair of first portions such that the one of the pair of wires is formed into a loop; and wherein one of the two drive-circuit units is distant from the plurality of input terminals by a distance that is larger than a distance between the other of the two drive-circuit units and the plurality of input terminals, the one of the two drive-circuit units being connected to the one of the pair of wires at the second portion thereof that connects the pair of first portions thereof.