METHOD AND APPARATUS FOR DISCHARING LIQUID MATERIAL

摘要

[Object] To provide a method and apparatus for discharging a liquid material, which can solve the problems regarding the occurrence of a satellite and accuracy of a landing position. [Solving Means] In a method for discharging a liquid material in the state of a liquid droplet through a discharge orifice by applying inertial force to the liquid material, the method is characterized in comprising the steps of measuring a distance A from a lower end of the discharge orifice to a lower end of the liquid material having flowed out from the discharge orifice at the time when the liquid material having flowed out from the discharge orifice separates from the discharge orifice, and setting a distance B between the lower end of the discharge orifice and a work surface to be approximately the same as the distance A. An apparatus for carrying out the method is also provided.

主权项

1. A method for discharging a liquid material by a discharging apparatus capable of moving a work and a discharge orifice relative to each other and discharging the liquid material in the state of a liquid droplet through the discharge orifice, the method comprising:
a first step of setting a distance between the lower end of the discharge orifice and a work surface to such a distance as enabling a distance between a lower end of the liquid droplet and the work surface to be approximately zero, at the time when the liquid droplet separates from the discharge orifice; and a second step of forming a dot of the liquid material on the work by discharging the liquid material, and wherein the discharging apparatus comprises a liquid chamber communicating with the discharge orifice, and a plunger which advances and retracts within the liquid chamber, and discharges the liquid material from the discharge orifice, by a single advancing movement of the plunger.