Patent ID: 7188922
Filing Date: 2007-03-13
Classification: B41J

Abstract:
1. A recording apparatus comprising: a head unit including (i) a cavity unit which stores an ink in cavities formed therein, and (ii) an actuator which is operable to generate energy required for recording predetermined patterns of image on a recording medium so as to cause the ink to be ejected onto the recording medium; a circuit board including a driver element which drives said actuator of said head unit; a heatsink having a first surface and a second surface opposite to said first surface, and having at least one of said first and second surfaces disposed in thermally conductive communication with said driver element; and a body frame having a bottom plate portion to which said head unit is attached, said bottom plate portion being formed with an ink supply passage which communicates with said cavity unit, wherein said circuit board further includes a wiring board portion which extends along an outside surface of said bottom plate portion of said body frame from said head unit toward a periphery of said body frame, and on which said driver element is disposed, wherein said the heatsink includes a horizontally extending plate portion which provides said first and second surfaces and which extends along said bottom plate portion of said body frame, and wherein said heat sink has a void portion on at least one of said first and second surfaces, said void portion being opposed to said head unit.