| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent variation in ejection characteristics by suppressing variation in influence of heat to a plurality of inks by effectively dissipating heat of a drive circuit of an inkjet printer head. <P>SOLUTION: A drive circuit 49 for driving a recording head 6 having a plurality of nozzle arrays 7 for ejecting inks in a plurality of colors is mounted on a circuit board 40. The drive circuit 49 is positioned at one end in an arrangement direction of a plurality of ink tanks 5 for containing the inks in the plurality of colors. One end of a heat conductive plate 60 is in contact with the drive circuit 49 to be thermally conductive thereto and is extended to the arrangement direction of the ink tanks 5 to be in contact with the bottom wall 5a to be fixed thereto. The heat conductive plate 60 has openings 61m-61k and the contact area of the ink tank 5k which is far from the drive circuit 49 is greater than that of the ink tank 5m which is near the drive circuit 49 so that the heat conductivities of the plurality of ink tanks 5 are made to be uniform. <P>COPYRIGHT: (C)2007,JPO&INPIT |
