Treatment Liquid for Plastic Film, Primer Liquid for Printing, Ink Composition, and Method for Ink Jet Recording Using Them

Abstract

This invention provides a treatment liquid for an ink jet recording medium having a recording face of a plastic film, wherein the treatment liquid including at least a specific cyclic ester compound or a specific cyclic amide compound, a primer liquid for printing, and an ink composition. According to the present invention, a plastic recorded matter possessing excellent adhesion and waterfastness can be formed on a recording medium having a recording face of a plastic film.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 103116 / 2005 (filing date: Mar. 31, 2005), Japanese Patent Application No. 103686 / 2005 (filing date: Mar. 31, 2005), Japanese Patent Application No. 103806 / 2005 (filing date: Mar. 31, 2005), Japanese Patent Application No. 102713 / 2005 (filing date: Mar. 31, 2005), Japanese Patent Application No. 103733 / 2005 (filing date: Mar. 31, 2005), and Japanese Patent Application No. 103767 / 2005 (filing date: Mar. 31, 2005), the entire contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of Invention[0003]The present invention relates to a treatment liquid for a plastic film. More particularly, the present invention relates to a treatment liquid composition to be used in the printing of a water-based ink composition on a recording medium having a recording face formed of a plastic film, which trea...

AI Technical Summary

Benefits of technology

[0014]The present inventors have now found that plastic recorded matters having significantly improved rubbing resistance, scratch resistance, and waterfastness can be produced by treating the surface of a plastic film on its recording face, that is, by previously coating a specific cyclic ester compound- or specific cyclic amide compound-containing treatment liquid having a specific composition onto the recording face, prior to the deposition, onto the recording face, of a thermoplastic resin-containing water-based ink composition which can be brought to a film upon heating.

[0015]The present inventors have further found that, when plastic recorded matters are formed by depositing an ink composition, plastic recorded matters having significantly improved rubbing resistance, scratch resistance, and waterfastness can be produced by previously coating a specific cyclic ester compound- or specific cyclic amide compound-containing primer liquid having a specific composition onto the surface of a plastic film to treat the surface of the plastic film and, at the same time, to form a primer film on the plastic film, prior to the deposition of the ink composition.

[0016]The present inventors have further found that, when ink jet recording is carried out on a recording medium having a recording face formed of a plastic film, recorded matters having significantly improved waterfastness and adhesion between the recording medium and the ink composition can be formed by using a specific solvent-containing ink composition having a specific composition. Regarding the solvent used, the use of a low-volatility cyclic ester compound or cyclic amide compound in combination with a high-volatility cyclic ether compound is more useful for achieving the above improvement.

[0018]Accordingly, an object of the present invention is to provide a treatment liquid for a plastic film that, when used with a water-based ink composition containing a thermoplastic resin, can realize the formation of a plastic recorded matter possessing excellent rubbing resistance, scratch resistance, and waterfastness. Another object of the present invention is to provide an ink jet recording method that can form a plastic printed matter possessing excellent rubbing resistance, scratch resistance, and waterfastness using the treatment liquid and the water-based ink composition.

[0019]Still another object of the present invention is to provide a primer liquid for printing for a plastic film that can realize the formation of a primer film having high adhesion to an ink composition deposited to form a plastic recorded matter possessing excellent rubbing resistance, scratch resistance and waterfastness. A further object of the present invention is to provide an ink jet recording method using the primer liquid.

[0020]Another object of the present invention is to provide an ink composition for ink jet recording that can form a plastic recorded matter possessing excellent adhesion and waterfastness on a recording medium having a recording face formed of a plastic film. Still another object of the present invention is to provide an ink jet recording method using the ink composition.

Problems solved by technology

Solvent-type inks, however, emit odor of solvents, and, in some cases, harmful components are contained in the solvent volatile component.

Also for UV curable inks, two-component-type curable inks and the like, in some cases, the curable monomer used contains harmful components.

When ink jet recording is carried out using a conventional water-based ink on a non-surface-treated plastic film for ink jet recording, recorded images are unsatisfactory in adhesion, scratch resistance and waterfastness.

This recording method, however, aims to record high-quality and waterfast images on commonly used recording media but does not aim at printing on plastic films.

This publication, however, describes lactams and lactones only as an example of solvents for dissolving a colorant in an ink composition and does not suggest printing of the ink composition onto a recording medium having a recording face formed of a plastic film.

These publications, however, do not suggest advantageous printing of an ink composition onto a recording medium having a recording face formed of a plastic film.

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