Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method

a technology of inkjet recording and ink media, which is applied in the field of recording ink as well as ink media set, inkjet recording apparatus and inkjet recording method, can solve the problems of long drying time, inferior fixing property of image, and poor color formation effect, and achieve low backside density and high image density. , the effect of good color formation

Inactive Publication Date: 2007-08-23
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0046] In the ink record of the present invention, the image having the high image density, the low backside density, the good color formation and no bleeding is obtained particularly when printed on the plain p

Problems solved by technology

Meanwhile, on the papers such as non-porous substrates such as offset coated papers for printing, plastic films, plastic laminate papers and plastic coated papers which have a low water-absorbing capacity, it takes a long time for drying because the wetting agent is hardly evaporated, which is impractical.
However, in this proposal, since no resin is contained in the ink, a fixing property of the image is inferior particularly when a pigment ink is used.
However, in this proposal, no resin is added, electrolytes are considerably abundantly contained, the fixing property of the image is inferior, and an ejecting system which is essentially different from the inkjet of a piezoelectric system is employed.
However, the wax having the wetting property tends to be inferior in fixing property and drying.
In the ink in this proposal, since the wetting agent content is low but a concentration of an entire solid content is low, there are problems in that the sufficient image density and color formation are not obtained.
However, it is not described to record on non-porous medium such as plastic films.
When printed on an unabsorbable recording medium such as polyester films, generally the ultraviolet ray curable ink is used because the usual ink is in

Method used

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  • Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method
  • Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method
  • Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method

Examples

Experimental program
Comparison scheme
Effect test

production example 1

—Preparation of Polymer Solution A—

[0481] An inside of a 1 L flask equipped with a mechanical stirrer, a thermometer, a nitrogen gas introducing tube, a reflux tube and a drop funnel was sufficiently replaced with nitrogen gas, then, 11.2 g of styrene, 2.8 g of acrylic acid, 12.0 g of lauryl methacrylate, 4.0 g of polyethylene glycol methacrylate, 4.0 g of styrene macromer and 0.4 g of mercaptoethanol were mixed, and the temperature is raised to 65° C. Subsequently, a mixed solution of 100.8 g of styrene, 25.2 g of acrylic acid, 108.0 g of lauryl methacrylate, 36.0 g of polyethylene glycol methacrylate, 60.0 g of hydroxyethyl methacrylate, 36.0 g of styrene macromer, 3.6 g of mercaptoethanol, 2.4 g of azobismethyl valeronitrile and 18 g of methyl ethyl ketone was dripped over 2.5 hours in the flask. After dripping, a mixed solution of 0.8 g of azobismethyl valeronitrile and 18 g of methyl ethyl ketone was dripped over 0.5 hours in the flask. After maturing at 65° C. for one hour, 0....

production example 1-1

—Preparation of Polymer Fine Particle Water Dispersion Containing Magenta Pigment—

[0482] Subsequently, 28 g of the resulting polymer solution A, 42 g of C.I. pigment red 122, 13.6 g of an aqueous solution of 1 mol / L potassium hydroxide, 20 g of methyl ethyl ketone and 13.6 g of ion-exchange water were sufficiently stirred and then kneaded using a roll mill. A resulting paste was placed in 200 g of purified water, which was sufficiently stirred, and then methyl ethyl ketone was distilled off using an evaporator to yield a water dispersion of magenta pigment polymer particles containing 15% by mass of the pigment and 20% by mass of a solid content of Production Example 1-1.

production example 1-2

—Preparation of Polymer Fine Particle Water Dispersion Containing Cyan Pigment—

[0483] A water dispersion of cyan pigment polymer fine particles of Production Example 1-2 was made in the same way as in Production Example 1-1 except that copper phthalocyanine pigment was used in place of C.I. pigment red 122. The water dispersion was prepared so that the solid content was 20% by mass and the amount of pigment colorant was 12% by mass.

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PUM

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Abstract

A recording ink containing at least a solid component which contains a colorant and a resin and is a solid at 25° C., a liquid component which has a higher boiling point than that of water and is a liquid at 25° C. and water, wherein the total content of the liquid component in the recording ink is 20% by mass or less, the total content of the solid component in the recording ink is 20% by mass or more, and the total content of a resin component in the solid component is 40% by mass to 95% by mass relative to a total amount of the solid component is provided.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a recording ink which is suitable for inkjet recording, as well as an ink media set, an ink cartridge, an ink record, an inkjet recording apparatus and an inkjet recording method using the recording ink. [0003] 2. Description of the Related Art [0004] An inkjet recording method is the method to perform printing by ejecting small liquid drops of an ink to adhere onto a recording medium such as paper. As the ink used for this inkjet recording method, those in which colorants of various dyes and pigments have been dissolved or dispersed in water or water and an organic solvent having a high boiling point and a wetting agent composed of the organic solvent having the high boiling point has been abundantly contained for keeping a moisturizing property are used. Such a wetting agent composed of the organic solvent having the high boiling point contributes to preventing nozzles from being d...

Claims

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Application Information

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IPC IPC(8): C09D11/00
CPCC09D11/322Y10T428/31504
Inventor ARUGA, TAMOTSUKOYANO, MASAYUKIMATSUYAMA, AKIHIKOHABASHI, HISASHIGOTO, HIROSHIOHSHIMA, TOHRUMOROHOSHI, NAOYANAGAI, KIYOFUMI
Owner RICOH KK
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