Compositions: coating or plastic – Coating or plastic compositions – Marking
Patent
1996-04-16
1998-01-06
Klemanski, Helene
Compositions: coating or plastic
Coating or plastic compositions
Marking
106 3143, C09D 1102
Patent
active
057049696
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an ink composition for recording, and to a method of recording, in particular, an ink jet recording method, using the same. More particularly, the present invention relates to an ink composition comprising as a colorant a phthalocyanine derivative, to a method of recording, in particular, an ink jet recording method, using the same, and to a method for forming color images.
2. Background Art
Ink compositions are required to have various excellent properties. Specifically, they are not only required to have excellent color reproducibility, but also required to produce images which are excellent in water resistance and light resistance.
Further, in the ink jet recording method in which droplets of an ink composition are ejected on a recording medium to form thereon an image, the ink composition is required to have much more excellent properties than those required for ordinary writing utensils such as fountain pens and ball-point pens. For instance, the ink composition is required to have a proper viscosity and a suitable surface tension, to be excellent in preservation stability, and not to cause clogging in a nozzle.
In general, many of these properties required for the ink composition for use in the ink jet recording method can be fulfilled by an aqueous ink composition comprising a water-soluble dye water and a water-soluble organic solvent. The properties of printed images, such as color tone, water resistance and light resistance, are highly dependent on the dye used. It has been tried to utilize various dyes.
Ink compositions containing a phthalocyanine derivative as a cyan or blue dye have been proposed. For instance, the use of C. I. Direct Blue 86, 87 or 199 has been proposed. Further, the use of a phthalocyanine derivative is also disclosed, for example, in Japanese Laid-Open Patent Publications Nos. 2772/1986, 149758/1987, 190273/1987 and 200883/1991.
However, there is yet room for improvement in these ink compositions containing a phthalocyanine derivative.
On the other hand, such a printer that produces color images by means of the ink jet printing method is also popular. Color images are formed by using, in general, yellow, magenta and cyan ink compositions, and optionally a black ink composition. By superposing these ink compositions, red, green, and blue, and optionally black colors are developed. In such color printing, each ink composition is required to be highly reproducible in its own color. In addition to this, these ink compositions are required to be excellent in reproducibility in red, green, and blue, and optionally black colors which are developed by superposing ink compositions one over another.
SUMMARY OF THE INVENTION
We have now found that an ink composition comprising as a colorant a specific phthalocyanine derivative has extremely excellent properties. Furthermore, we have also found that excellent color printing can be obtained by the use of the combination of this cyan ink composition with yellow and magenta ink compositions, each comprising a specific dye.
Accordingly, an object of the present invention is to provide an ink composition having various properties which are required for ink compositions.
Another object of the present invention is to provide an ink composition having various properties which are required for ink compositions useful for ink jet recording.
A further object of the present invention is to provide a method of printing, in particular, an ink jet recording method, by which excellent color images can be obtained.
According to the present invention, there provides a cyan ink composition comprising as a colorant a phthalocyanine derivative represented by the following formula (I): ##STR2## wherein
X represents an ion of a metal selected from Cu, Fe, Co and Ni,
M represents hydrogen atom, an alkali metal, ammonium or an organic amine,
R.sup.1 represents hydrogen atom or an alkyl group which may be substituted,
Z represents --OH, --COOH or NR.sup.2 R.sup.3 ( where
REFERENCES:
patent: 4632703 (1986-12-01), Koike et al.
patent: 4732615 (1988-03-01), Kawashita et al.
patent: 5123960 (1992-06-01), Shirota et al.
patent: 5296023 (1994-03-01), Gregory et al.
patent: 5501710 (1996-03-01), Wunderlich
Abstract of JP59/022967, Feb. 1984.
Abstract of JP59/030874, Feb. 1984.
Abstract of JP06/169982, Jun. 1994.
Kanaya Miharu
Owatari Akio
Klemanski Helene
Seiko Epson Corporation
LandOfFree
Aqueous ink composition and method of recording using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aqueous ink composition and method of recording using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous ink composition and method of recording using the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2324920