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Inkjet black ink, ink set, inkjet recording method, ink cartridge, recording unit, and inkjet recorder

A kind of ink and inkjet technology, which is applied in the direction of copying/marking methods, chemical instruments and methods, inks, etc., can solve the problems of discoloration and fading, and achieve the effect of high printing density and excellent weather resistance

Inactive Publication Date: 2007-06-06
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the viewpoint of gas resistance, there are cases where the image formed on the recording medium clearly shows discoloration and fading, and improvement is desired.

Method used

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  • Inkjet black ink, ink set, inkjet recording method, ink cartridge, recording unit, and inkjet recorder
  • Inkjet black ink, ink set, inkjet recording method, ink cartridge, recording unit, and inkjet recorder
  • Inkjet black ink, ink set, inkjet recording method, ink cartridge, recording unit, and inkjet recorder

Examples

Experimental program
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Effect test

Embodiment

[0168] Hereinafter, the present invention will be described in more detail using examples and comparative examples. However, the present invention is not limited by the following examples as long as the spirit of the present invention is not exceeded. In addition, unless otherwise specified, the ink components of Examples and Comparative Examples mean "parts by mass".

[0169]

[0170] (Preparation of Compound (α))

[0171] The compound of the following formula (A) was added and dissolved in water to which sodium carbonate was added, and hydrochloric acid and sodium nitrite were added for diazotization. To this diazo cloudy liquid, an aqueous solution of 6-phenylamino-1-hydroxynaphthalene-3-sulfonic acid was added and dissolved in the presence of sodium carbonate to obtain a reaction liquid (A). Next, 2-sulfamic acid was dissolved in the presence of sodium hydroxide, hydrochloric acid and sodium nitrite were added, and diazotization was performed. Next, 6-amino-1-hydroxyna...

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PUM

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Abstract

The present invention aims to provide an ink jet black ink which can improve weatherability, optical density and sticking recovery property of nozzles of a recording head. According to the present invention, an ink jet black ink is provided which comprises at least a coloring-material and a water-soluble organic solvent, wherein the coloring material is a compound represented by the following general formula (I) or a salt thereof, and the water-soluble organic solvent is a water-soluble organic solvent having a relative permittivity of from 30.0 or more to less than 70.0 at 20 DEG C and capable of dissolving the compound represented by the following general formula (I) or a salt thereof, by 1.0 mass % or more at 25 DEG C, and is in a content of 50.0 mass % or more with respect to the total content of all water-soluble organic solvents contained in the ink jet black ink.

Description

technical field [0001] The present invention relates to black ink for inkjet, ink set, inkjet recording method, ink cartridge, recording unit and inkjet recording apparatus. Background technique [0002] The inkjet recording method is to eject tiny droplets of ink through various operating principles, and make them adhere to recording media such as paper to record images, characters, etc. In addition, the inkjet recording method has the characteristics of high speed, low noise, easy multicoloration, large versatility of recording patterns, and does not require development and fixing. In recent years, as a recording device for forming various images, it has become popular in information devices. Led by a variety of uses are rapidly gaining popularity. Furthermore, the image formed by the multi-color inkjet method can obtain a record that is not inferior to the multi-color printing by the plate-making method or the printing by the color photography method. When the number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00B41M5/00B41J2/01C09B33/18C09D11/32C09D11/40
Inventor 高山日出树真船久实子冈村大二佐藤真一吉泽纯中村邦彦
Owner CANON KK
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