Waste liquid processing device

Abstract

The present invention provides a waste liquid processing device, capable of solidifying the liquid reliably to recovery, and processing the waste liquid safely and easily. The waste liquid processing device includes: a waste liquid tank (6) collecting a liquid cured by irradiation of energy rays as a waste liquid; an irradiation portion (7) irradiating curing energy rays to a liquid level (11) of the waste liquid contained in the waste liquid tank (6); and an external applying portion applying external force to at least one of the waste liquid tank (6) and the contained waste liquid. Thus, it is able to solidify the liquid reliably to recovery and process the waste liquid safely and easily.

Description

[0001] Refer to related applications (CROSS-REFERENCE TO RELATEDAPPLICACJIONS) [0002] The present invention is based on an application claiming Paris priority based on Japanese Patent Application No. 2008-13437 (filing date: 2008.1.24). technical field [0003] The present invention relates to a waste liquid treatment device for energy ray curable liquid such as energy ray curable ink cured by irradiation of energy ray such as ultraviolet (UV), and mainly relates to a device suitable for recording ink droplets ejected from nozzles according to printing data. A waste liquid treatment device for a liquid ejecting device such as an ink jet recording device that forms dots on a medium. Background technique [0004] As for the liquid ejecting apparatus ejecting a liquid onto a target, an inkjet recording apparatus ejecting ink onto recording paper to perform printing is known. The recording head of this inkjet recording device has the following problem: in printing the ink aft...

AI Technical Summary

Problems solved by technology

The recording head of this inkjet recording device has the following problem: in printing the ink after being pressurized by the pressure generating chamber from the nozzle as an ink drop on the recording paper, the ink caused by the evaporation of the solvent from the nozzle opening Viscosity rise, solidification of ink, fixation of dust, and incorporation of air bubbles, etc. will lead to poor ejection and poor printing.

[0011] However, in the device in the above-mentioned patent document, even if the waste liquid container is transparent, the absorber and the cured liquid are not necessarily so transparent, and the waste liquid is irradiated with ultraviolet light in the state absorbed in the absorber. The outer part of the transparent waste liquid container has a better propagation path of ultraviolet rays and cures quickly, but the further the ultraviolet rays travel to the inside, the harder it is to reach, and there are parts that remain in an uncured state

[0012] It is known that ultraviolet curable liquids often contain substances that are irritating to the skin, and have a strong irritating odor. When they directly contact the skin in an uncured state, they may have adverse effects on the human body, and the working environment is poor due to the irritating odor. On the one hand, after thorough UV curing, it becomes harmless and also suppresses irritating odors.

Due to this situation, there is a problem that, like the device of the above-mentioned Patent Document 1, after the ultraviolet curable liquid remains in an uncured state, when the waste liquid container is recovered for incineration treatment, etc., the working environment cannot be ensured. safety and comfort

[0013] In addition, there is a problem that when the liquid is solidified in the state absorbed by the absorber, the recovered liquid is difficult to be absorbed by the absorber. Therefore, although there is room for recovery of the waste liquid container, it may become a problem. The state where waste liquid recovery cannot be performed

Since this state is out of balance due to the absorption state and solidification state of the waste liquid, the life of the waste liquid tank is also unstable, and the replacement time cannot be properly notified to the user.

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