| 摘要 |
PURPOSE: To stabilize the jet amount by means of a simple structure by providing a plurality of heaters and driving means for shifting the foaming timing of respective heaters one another. CONSTITUTION: An ink jet head 2 is provided with heaters for jetting on ink lines 2A corresponding to a plurality of ink jet openings 2N, and ink is jetted out of cartridges 2 through a connecting tube 4. Respective ink lines 2A are provided with two heaters SH1 and SH2. Power is applied to the heaters SH1 and SH2 respectively by 8 ROM storing voltage values, pulse values and other fixed data of heat pulses in a controller by jetting at shifting time intervals to pulses. As a result, the larger the value is, the less the jet amount is for any positive or negative values of shifting time, and the jet amount is set constant by setting the shifting time in a manner that the higher the temperature is, the longer the shifting time is. |
