Discharge system and method of discharge by a discharge system

摘要

A discharge system includes: a head unit including discharge heads that discharge a liquid material from nozzle openings that are communication with cavities onto a target by changing the internal pressure of the cavities using piezo elements; a viscosity estimating unit that estimates the viscosity of the liquid material by sucking the liquid material from first vessels that hold the liquid material into the cavities; and a waveform control unit that controls the voltage applied to the piezo elements according to the estimated viscosity of the liquid material.

主权项

1. A discharge system comprising:
a discharge head that discharges a liquid material onto a target from a nozzle opening that is communicated with a cavity by changing an internal pressure of the cavity using an actuator; a state estimating unit that estimates a state of the liquid material by sucking the liquid material from a first vessel holding the liquid material into the cavity via the nozzle opening; a driving condition setting unit that sets conditions for driving the actuator according to an estimated state of the liquid material; a weight measuring unit that measures a weight of a vessel group including the first vessel and of the liquid material held in the vessel group; and a first discharge amount confirming unit that measures, using the weight measuring unit, a change in weight when the discharge head has sucked from any vessel in the vessel group and a change in weight when the discharge head has discharged into any vessel in the vessel group and confirms a discharge amount of the discharge head; wherein the state estimating unit includes a viscosity estimating unit that estimates a viscosity of the liquid material according to a suction amount and a suction time when applying a predetermined pressure, and the driving condition setting unit includes a waveform control unit that controls a voltage applied to the actuator according to an estimated viscosity of the liquid material.