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Ink, ink series, ink box, printing unit, printing device, method and pigment

A technology of colorants and inks, applied in chemical instruments and methods, inks, copying/marking methods, etc., can solve problems such as unsatisfactory

Inactive Publication Date: 2005-04-20
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, even with colorants such as organic pigments or carbon black, the resulting images are not ideal in terms of abrasion resistance (for example, rubbing with fingers, or writing on them with a felt-tip pen)

Method used

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  • Ink, ink series, ink box, printing unit, printing device, method and pigment
  • Ink, ink series, ink box, printing unit, printing device, method and pigment
  • Ink, ink series, ink box, printing unit, printing device, method and pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0195] First, prepare a self-dispersible pigment. Set the surface area to 230m 2 10 parts of carbon black per g and dibutyl phosphate (DBP) oil absorption of 70ml / 100g, and 3.41 parts of p-amino-benzoic acid were mixed well with 72 parts of water. To this was added drop by drop 1.62 parts of nitric acid. The mixture was stirred well at 70°C. After stirring for a few minutes, a solution of 1.07 parts of sodium nitrite in 5 parts of water was added thereto. Then, the mixture was stirred for another hour. The resulting suspension was filtered through filter paper (trademark: Toyo Roshi No. 2, manufactured by Advantice Corporation). The collected pigment particles were thoroughly washed with water and dried in an oven at 90°C.

[0196] Pigment dispersions containing microcapsules were prepared as follows. First, 175 parts of n-butyl methacrylate, 10.7 parts of n-butyl acrylate, 37.5 parts of (β-hydroxyethyl) methacrylate, 26.8 parts of methacrylic acid and 20 parts of tert-b...

example 2

[0245] Pigment dispersions containing microcapsules were prepared as follows. The carbon black treated and used in Example 1 was sufficiently dispersed in water at a solids content of 15% in a total amount of 1 kg. To this liquid dispersion is added dilute sulfuric acid solution to precipitate the pigment (pH approximately 3). To this solution, 150 g of a 20% aqueous solution of polyvinyl alcohol (manufactured by Kuraray Co.) was added drop by drop and stirred. The solution was neutralized with aqueous ammonium hydroxide to obtain liquid dispersion H.

[0246] Liquid dispersion G was prepared in the same manner except that the amount of aqueous polyvinyl alcohol solution was changed from 150 g to 75 g. Liquid dispersion F was prepared in the same manner except that the amount of the polyvinyl alcohol aqueous solution was changed to 37.5 g. Liquid dispersion E was prepared in the same manner except that the amount of the polyvinyl alcohol aqueous solution was changed to 7.5 ...

Embodiment 3

[0278] Pigment dispersions containing microcapsules were prepared as follows. First, 175 parts of n-butyl methacrylate, 10.7 parts of n-butyl acrylate, 37.5 parts of (β-hydroxyethyl) methacrylate, 26.8 parts of methacrylic acid and 20 parts of tert-butyl peroctoate were mixed. Under a nitrogen atmosphere, the above liquid mixture was added dropwise to 250 parts of methyl ethyl ketone at 75° C. over 2 hours with stirring. Then, the reaction was carried out at that temperature for 15 hours to obtain a resin solution. Next, 11.6 parts of this resin solution, 1.6 parts of diethanolamine, 30 parts of carbon black pigment (MA-600, manufactured by Mitsubishi Chemical Co., Ltd.) were mixed, and then additionally added purified water to make a total of 150 parts. Thereto were added 500 g of zirconia pellets having an average particle diameter of 0.5 mm. The mixture was charged to a paint mixer and mixed for 4 hours. The zirconia globules were removed by filtration to obtain a disper...

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Abstract

The invention discloses an ink, an ink set, an ink cartridge, a printing unit, a printing device and a method, and a color material, which can provide a higher-density printing image, and have the advantages of maintaining light resistance and image stability. Excellent color reproducibility, and suppresses the occurrence of bleeding when forming color images. The ink contains a capsule color material, the color material is composed of a water-insoluble color material and an organic polymer covered on the color material, and the content range of the organic polymer contained in the capsule color material accounts for 1%-20%.

Description

technical field [0001] The present invention relates to an ink (printing fluid) for writing implements such as water-based ballpoint pens, fountain pens, and felt-tip pens; an instant ink-jet printer of the thermal ink-jet type, pressure type, or the like; an ink set; a An ink cartridge; a printing unit; an image printing device; an inkjet printing method using the ink; and a color material for the ink. Background technique [0002] Dyes are often used as colorants for inks to obtain high color rendering and high stability. However, the dyes are generally unsatisfactory in the water resistance and light fastness of the formed images, and although they have some advantages, they still have disadvantages, and more improvements are required. In recent years, in order to overcome the above disadvantages, various inks have been invented in which water-insoluble colorants such as organic pigments and carbon black are used instead of dyes. [0003] However, even with colorants su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/01B41M5/00C09C1/56C09C3/06C09C3/10C09D11/00
CPCB41J2002/14169B41J2002/14475C09D11/32
Inventor 三品伸也佐藤真一真田干雄大角孝一
Owner CANON KK
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