Liquid discharge device and liquid discharge method

Abstract

A liquid discharge device including a discharge unit including: an elastic discharge part including a storage chamber at least partially formed of an elastic component, a supply hole which leads to the storage chamber and through which liquid is supplied to the storage chamber, and a discharge hole through which the liquid is discharged; and an actuating unit configured to vary a volumetric capacity of the storage chamber. The liquid discharge device further includes: a pressurizing unit configured to pressurize the liquid to be supplied to the storage chamber to a pressure within a stable range; a supply control unit configured to control whether the pressurized liquid is supplied to the storage chamber; and an actuation control unit configured to control operation of the actuating unit.

Description

technical field [0001] The present invention relates to a liquid discharge device and a liquid discharge method that discharge liquid in the form of droplets, and more particularly, to a liquid discharge device that can be applied to liquids containing solids in a dispersed state or high-viscosity liquids, and can accurately control the discharge volume. Liquid discharge method. Background technique [0002] Conventionally, as one of the printing technologies, there is an inkjet technology that discharges ink droplets to an accurate position to print an image on a paper surface. In addition, in recent years, this inkjet technology has been gradually applied to the formation of patterns or the formation of uniform thin films, etc. in the manufacturing process of various devices. [0003] Furthermore, in order to widely apply the inkjet technology to fields other than printing of characters and figures, a liquid discharge device capable of discharging various liquids is requi...

AI Technical Summary

Problems solved by technology

[0011] However, the liquid discharge device with the above-mentioned structure can accurately discharge a certain amount of liquid by filling the liquid as far as possible up to the opening of the discharge hole, but there is a problem that the discharge hole is filled due to the surface tension of the liquid, so the liquid The time until the entire discharge hole is filled becomes longer

In addition, if the internal volume of the discharge hole is increased in order to discharge a large amount of liquid, the time until the liquid fills the discharge hole will be longer, so it is difficult to discharge a large amount of liquid within a certain period of time.

[0012] On the other hand, if the liquid is forcibly supplied by applying pressure to the liquid in order to speed up the filling of the liquid, in the liquid discharge device which has a series of structures from the supply hole to the discharge hole through the storage chamber, there may be a problem caused by the supply. The danger of liquid leakage from the discharge hole due to the pressure of the liquid, it is difficult to obtain high discharge efficiency in a stable state

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