| 摘要 |
PURPOSE:To reduce the variation in a particle speed, when one of opposing pressure chambers is pressurized and the particles are jetted, by pressurizing the other pressure chamber so that the particles are not formed. CONSTITUTION:In order to prevent the variation in the particle speed due to the effect of pressure waves when the opposing pressure chambers 3 in the multiple nozzle print head are pressurized; one pressure chamber 3 (b) is pressurized by a threshold voltage so that the particles are not formed, when one (a) of the opposing pressure chambers 3 is pressurized for compressing the particles. Thus the difference between the particle speed at this time and the particle speed when both chambers are pressurized is reduced. |
