Fine droplet ejecting device and ink jet recording apparatus using the same

Abstract

The fine droplet ejecting device includes a ejection unit having an ejection port, and for continuously ejecting fine droplets by applying an electrostatic force to a solution or ink having an electrical charge containing at least fine particles and a medium, a deflecting unit for deflecting the fine droplets ejected from the ejection unit based on a control signal and a recovering unit for recovering either one of the fine droplets flying straight after being ejected from the ejection unit and the fine droplets having a flight direction deflected by the deflecting unit. The ejection unit may further include a resolution enhancing unit for deflecting the fine droplets in a direction different from the flight direction deflected by the deflecting unit. The device can eject the fine droplets stably at high speed, and can reduce a cost. The ink jet recording apparatus uses the fine droplet ejecting device.

Description

technical field [0001] The present invention belongs to the field of micro-droplet ejection devices for ejecting micro-droplets, and more specifically, relates to a micro-droplet ejection device for ejecting micro-droplets by applying electrostatic force to a solution containing at least fine particles, and a device using the same. Inkjet recording device. Background technique [0002] Conventionally, as a device for discharging fine liquid droplets, there has been, for example, an electrostatic type inkjet recording device in which an electrostatic force is applied to ink having charged fine particles to discharge the ink. As such an electrostatic inkjet recording device, an inkjet recording device disclosed in JP-A-10-1384893 (hereinafter referred to as Patent Document 1) is known. [0003] Figure 17 , shows a conceptual diagram of an inkjet head of an inkjet recording apparatus disclosed in Patent Document 1. FIG. [0004] Figure 17 It is a schematic configuration dia...

AI Technical Summary

Problems solved by technology

[0013] However, although the inkjet recording method disclosed in Patent Document 1 has the above-mentioned excellent characteristics, on the other hand, since the response from the application of the driving voltage to the ejection of liquid droplets is low, there is a disadvantage in improving the recording frequency. In addition, it is easy to change the ejection responsiveness to the driving voltage due to the ejection experience of the ink droplets of the ejection part, and the ejection of the droplets may become unstable.

In addition, there is a problem that since the discharge / non-discharge of ink droplets is performed with a high drive voltage, an expensive driver is required, and the control is very complicated.

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