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

An inkjet recording method and ink technology, applied in inks, applications, household appliances, etc., can solve the problems of low density on the back, inability to obtain images, slow drying, etc., and achieve low density on the back, good color rendering, and high image density Effect

Inactive Publication Date: 2008-01-02
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the example, the amount of humectant in the ink is large, and the solid content is less than 10% by mass. Therefore, it can be inferred that if the heat drying is not performed, the drying will be very slow, and a clean image cannot be obtained.
That is, the solid content of "ink sample 1" described in the above-mentioned Japanese Patent Laid-Open No. 2000-44858 is calculated to be 11% by mass. Although it exceeds 10% by mass, the resin contains a dispersant polymer and is not an emulsion type. , so it can be speculated that a large amount of resin cannot be added
[0018] Therefore, the current situation is that for pri

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
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Effect test

manufacture example 1

[0548] -Preparation of polymer solution A-

[0549]The interior of a 1 L flask equipped with a mechanical stirrer, a thermometer, a nitrogen introduction tube, a reflux tube and a dropping funnel was fully replaced with nitrogen, and then 11.2 g of styrene, 2.8 g of acrylic acid, 12.0 g of lauryl methacrylate, and 4.0 g of polyethylene were mixed. Ethylene glycol methacrylate, 4.0 g of styrene macromolecules and 0.4 g of mercaptoethanol, and the temperature was raised to 65°C. Next, 100.8 g of styrene, 25.2 g of acrylic acid, 108.0 g of lauryl methacrylate, 36.0 g of polyethylene methacrylate, 60.0 g of hydroxyethyl methacrylate, 36.0 g of A mixed solution of styrene macromolecule, 3.6 g mercaptoethanol, 2.4 g azodimethylvaleronitrile and 18 g methyl ethyl ketone. After the dropwise addition, a mixed solution of 0.8 g of azodimethylvaleronitrile and 18 g of methyl ethyl ketone was added dropwise to the flask over 0.5 hours. After aging at 65°C for 1 hour, 0.8 g of azodimethy...

manufacture example 1-1

[0551] -Preparation of Magenta Pigment Polymer Microparticle Aqueous Dispersion-

[0552] Next, 28 g of the obtained polymer solution A, 42 g of C.I. Pigment Red 122, 13.6 g of a 1 mol / L potassium hydroxide aqueous solution, 20 g of methyl ethyl ketone, and 13.6 g of ion-exchanged water were sufficiently stirred, and then kneaded with a roll mill. . The obtained slurry was put into 200 g of pure water, and after stirring sufficiently, methyl ethyl ketone and water were distilled off with an evaporator to prepare a magenta pigment polymerization of Production Example 1-1 containing 15 mass % of pigment and 20 mass % of solids. Aqueous dispersion of microparticles.

manufacture example 1-2

[0554] -Preparation of Cyan Pigment Polymer Microparticle Aqueous Dispersion-

[0555] A cyan pigment polymer fine particle aqueous dispersion of Production Example 1-2 was prepared in the same manner as in Production Example 1-1 except that C.I. Pigment Red 122 was replaced with a copper phthalocyanine pigment in Production Example 1-1. In addition, the solid content was 20 mass % and the pigment coloring agent was 12 mass % at the time of preparation.

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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 DEG C, a liquid component which has a higher boiling point than that of water and is a liquid at 25 DEG 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

technical field [0001] The present invention relates to a recording ink suitable for inkjet recording, and an ink media set, an ink cartridge, an ink recorded matter, an inkjet recording apparatus, and an inkjet recording method using the same. Background technique [0002] The ink jet recording method is a method of printing by making small droplets of ink fly and adhere to a recording medium such as paper. As the ink used in this inkjet recording method, various dyes or pigments are generally used to dissolve or disperse colorants in water or water and a high-boiling organic solvent, and also contain a large amount of a high-boiling organic solvent for maintaining moisture retention. Wetting ink for organic solvents. This humectant, which contains a high boiling organic solvent, helps prevent drying of the nozzle due to its water retention capacity. However, when printing is performed on paper with a high penetration speed, such as plain paper, it is difficult for the hu...

Claims

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Application Information

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IPC IPC(8): C09D11/10B41J2/175C09D11/30C09D11/32
Inventor 有贺保小谷野正行松山彰彦羽桥尚史后藤宽大嶋享诸星直哉永井希世文
Owner RICOH KK
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