PURPOSE: To efficiently redisperse a solid content contained in flocculates or sediments of a dispersed and jetted material in a device, stabilize a printing quality, and obtain a low-cost device by exciting a piezoelectric element serving as an energy conversion element under a liquid drop jetting range.
CONSTITUTION: An exciting circuit 17 consists of a switch part 16, a transmitting part 15, and an amplifying part 14. When a mode for redispersing a solid content in ink is selected, the switch part 16 is actuated on an external signal 18, and a signal of set frequency and waveform is transmitted to the amplifying part 14 from the transmitting part 15. In the amplifying part 14, the voltage of the signal from the transmitting part 15 is amplified up to a predetermined voltage. The amplified signal is supplied to electrodes 12 of piezoelectric elements 11 of a liquid drop jetting device. At this time, counter electrodes 13 of the piezoelectric elements are grounded. On the input signal through the amplifying part 14, the piezoelectric elements 11 are excited, a pressure wave is generated in ink chambers, and a solid content in ink flocculates or sediments is redispersed.
| JPS59176548 | [Title of the device] Ink-jet record A head |
| JP3796621 | COLOR IMAGE FORMING APPARATUS |
| JP2022117329 | INK JET PRINTER |
TAKAHASHI YOSHIKAZU
SUGAWARA HIROTO
KANEGAE TAKAHIRO
KINOSHITA MASAHIKO
YOSHIMURA MANABU
