| 摘要 |
<p>A printing head device according to the present invention includes a plurality of printing pins corresponding to respective dots, a plurality of first pin drive plates (20) having the printing pins fixed thereon and having surfaces on which first electrodes are formed, a plurality of second pin drive plates (30) having second electrodes opposing to the first electrodes with predetermined gaps therebetween, a first drive plate support member (11) for supporting the first pin drive plates (20) through elastic members (13), respectively, and a second drive plate support member (12) for supporting the second pin drive plates (30). Further, the second drive plate support member is vibrated repeatedly in a direction toward a top end of the printing pin by a drive unit. A drive circuit applies a voltage based on a printing signal between the first and second electrodes of the first and second pin drive plates with the vibration timing of the drive unit to generate Coulomb force between the first and second electrodes. With this construction, it is possible to enable the printing pins to perform a print by a single drive unit and to miniaturize the printing head. <IMAGE></p> |
