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Ink jet ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus

A technology of inkjet and coloring materials, applied in the fields of inkjet ink, inkjet recording, ink cartridge, recording unit and inkjet recording equipment, which can solve the problem of not reaching the level of fastness

Inactive Publication Date: 2008-11-05
CANON KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the image formed by the ink containing both of the anthrapyridone dye and the azo dye has been somewhat Improved gas and light resistance, but not at the level of fastness required in recent years

Method used

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  • Ink jet ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus
  • Ink jet ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus
  • Ink jet ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus

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Embodiment Construction

[0031] Preferred exemplary embodiments of the present invention are enumerated and described in detail below.

[0032] Note that when the compound is a salt, the salt dissociates and exists as ions in the ink, but this state is described as "the ink contains salt" in the present invention for convenience.

[0033]

[0034] The components comprising the inkjet ink of the present invention (hereinafter, may be simply referred to as ink) will be described in detail below. Note: the compound represented by general formula (I), the compound represented by general formula (II) and the compound represented by general formula (III) can be referred to as "compound of general formula (I)", "compound of general formula (II)" respectively )" and "compounds of general formula (III)".

[0035] As a result of research by the present inventors, it was found that an image having excellent light resistance and a desirable tone as a magenta ink can be combined by an ink containing an anthrapy...

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Abstract

The present invention provides an ink jet ink having a magenta color which gives an image excellent in magenta color tone and also excellent in image fastness (lightfastness and gas resistance). The ink jet ink includes a first coloring material that is an anthrapyridone compound having a structure represented by general formula (I) and / or general formula (II) and a second coloring material that is an azo compound having a structure represented by general formula (III), wherein the mass ratio of the content of the first coloring material to the content of the second coloring material is from 2.5 or more to 10.0 or less.

Description

technical field [0001] The present invention relates to an inkjet ink, an inkjet recording method, an ink cartridge, a recording unit, and an inkjet recording apparatus. Background technique [0002] The inkjet recording method is a method of forming an image by applying ink droplets to a recording medium such as plain paper and glossy media. This method has been rapidly put into wide use by reducing the cost and increasing the recording speed of the inkjet recording apparatus. Furthermore, in addition to the progress in obtaining high-quality images by the inkjet recording method, the inkjet recording method has been generally used as an image output method comparable to silver halide photography with the rapid spread of digital cameras. [0003] In recent years, further progress in obtaining high-quality images has been achieved through ink droplet minimization and color gamut improvement with the introduction of multi-color inks. On the other hand, the demand for colori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02B41J2/01B41J2/175B41M5/00C09D11/00C09D11/328
Inventor 藤本邦昭吉泽纯河部美奈子冈村大二
Owner CANON KK
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