Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2000-04-26
2003-01-07
Klemanski, Helene (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031430, C106S031580, C106S031600, C106S031750, C106S031860, C523S161000
Reexamination Certificate
active
06503307
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an ink set, a printing method, an ink, a printed article, a printing apparatus, an ink cartridge, a recording unit, and a process for forming a polymeric compound film.
2. Related Background Art
Printed articles prepared by depositing an ink on a recording medium by ink-jet recording should have the characteristics below:
(1) high water fastness of the color recorded image,
(2) high adhesiveness of the coloring material to the recording medium,
(3) high saturation, high lightness, and high transparency of the recorded dots,
(4) high transparency of light-transmissive recording medium for wider application of the printed articles, and so forth.
Research and developments are being conducted actively for further improvements of the characteristics of the ink-jet printed articles.
In some of the developed methods, two types of liquids reactive with each other are ejected respectively from separate orifices and are allowed to mix and react on the recording medium, thereby improving the water resistance and abrasion resistance of the printed article. For example, Japanese Patent 2510420 discloses a method in which an ink containing carboxymethylcellulose and another ink containing an aluminum salt are allowed to react on a recording medium, and a method in which an ink containing hexamethylenediamine and another ink containing an aliphatic dibasic acid anhydride/chloride are allowed to react on a recording medium.
Japanese Patent Application Laid-Open No. 10-287035 discloses a printing method in which an acrylate monomer in the recording liquid is polymerized by photopolymerization initiator under application of UV ray energy.
The above-mentioned two-liquid ink-jet printing method requires generally a fixation step like light irradiation after application of the liquids onto the recording medium, and the printing apparatus therefor will be large and complicated. Therefore, such a printing method is not suitable for personal uses and other non-industrial application fields.
Generally, the conventional two-liquid ink-jet printing process employs a less water-soluble or water-insoluble substance as the reactive substance, which requires addition of an organic solvent for dissolving the reactive substances to obtain an aqueous solution for ejection by an ink-jet system. However, the added organic solvent may affect the permeability of the liquid into the recording medium to lower the print quality. Accordingly, for further improvement of print quality in ink-jet recording by the two-liquid system, an ink set should be developed which comprises liquids containing a substance highly water-soluble and reactive in water to cause rapid reaction by simple mixing; or containing a substance highly water-soluble and reactive in water to cause rapid reaction by simple mixing, and not adversely affecting a coexisting coloring material.
SUMMARY OF THE INVENTION
The present invention has been accomplished on the above technical background.
An object of the present invention is to provide an ink set which gives a printed article having excellent water resistance and abrasion resistance and deteriorated less by ozone or a like external factor.
Another object of the present invention is to provide a printing method which is capable of giving a high-quality printed article having excellent water resistance and abrasion resistance, and is capable of giving a high-quality printed article stably regardless of the type of the recording medium.
Still another object of the present invention is to provide an ink which is suitable for giving a printed article having excellent water resistance and abrasion resistance and deteriorated less by ozone or a like external factor.
A further object of the present invention is to provide a printed article having excellent water resistance and abrasion resistance and deteriorated less by ozone or a like external factor.
A still further object of the present invention is to provide a printing apparatus, an ink cartridge, and a recording unit for preparing a high-quality printed article having excellent water resistance and abrasion resistance and deteriorated less by ozone or a like external factor.
A still further object of the present invention is to provide an ink set which is capable of forming a polymeric compound film having excellent water resistance and abrasion resistance.
A still further object of the present invention is to provide a method of forming a polymeric compound film having excellent water resistance and abrasion resistance on the surface of a recording medium.
A still further object of the present invention is to provide an aqueous ink useful for forming a dense polymeric compound film having excellent water resistance and abrasion resistance on the surface of a recording medium.
The ink set of an embodiment of the present invention comprises a first liquid composition containing a first water-soluble compound having in the molecule an ethylenically unsaturated double bond having an electron-attractive substituent on the &agr;-position, and a second liquid composition containing a second water-soluble compound having an active hydrogen capable of being added to the first compound in coexistence; at least one of the first liquid composition and the second liquid composition further containing a coloring material.
The ink set of another embodiment of the present invention comprises a first liquid composition containing a first water-soluble compound having in the molecule an ethylenically unsaturated double bond having an electron-attractive substituent on the &agr;-position, a second liquid composition containing a second water-soluble compound having an active hydrogen capable of being added to the first compound in coexistence, and an ink containing a coloring material.
The printing method of an embodiment of the present invention comprises the steps of (i) providing an ink set comprising a first liquid composition containing a first water-soluble compound having in the molecule an ethylenically unsaturated double bond having an electron-attractive substituent on the the &agr;-position, and a second liquid composition containing a second water-soluble compound having an active hydrogen capable of being added to the first compound in coexistence, at least one of the first liquid composition and the second liquid composition further containing a coloring material; and (ii) applying the first liquid composition and the second liquid composition respectively onto prescribed positions on a recording medium to cause mixing or contact of the first liquid composition and the second liquid composition.
The printing method of another embodiment of the present invention comprises the steps of (i) providing an ink set comprising a first liquid composition containing a first water-soluble compound having in the molecule an ethylenically unsaturated double bond having an electron-attractive substituent on the &agr;-position, a second liquid composition containing a second water-soluble compound having an active hydrogen capable of being added to the first compound in coexistence, and an ink containing a coloring material; (ii) applying the first liquid composition and the second liquid composition respectively onto prescribed positions on a recording medium to cause mixing or contact of the ink with the first liquid composition and the second liquid composition; and (iii) applying the ink onto the recording medium to cause mixing or contact of the first liquid composition and the second liquid composition.
The ink of an embodiment of the present invention contains, in an aqueous medium, at least one compound selected from the group consisting of the compounds represented by Chemical Formulas A-1 to A-12 below, and a coloring material.
(where A is CH═C(X)—C(═O)—O, and X is H or CH
3
)
(where A is CH═C(X)—C(═O)—O, and X is H or CH
3
)
(where A is CH═C(X)—C(═O)—O, and X is H or CH
3
)
(where x, y and z are respectively an integer in the range of x
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Klemanski Helene
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