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Ink set and ink jet recording method

An ink set and ink technology, applied in the field of ink sets, can solve problems such as hue changes and image quality degradation

Inactive Publication Date: 2003-12-31
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, there is a problem in inkjet-recorded printed matter using the existing pigment ink set: if the light source of illumination is changed, the phenomenon of hue change occurs, which is called metamerism.
This color separation is particularly conspicuous in the synthetic black or gray hue part formed by the YMC three-color ink, and it becomes one of the causes of image quality degradation.

Method used

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  • Ink set and ink jet recording method
  • Ink set and ink jet recording method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] Prepare yellow, red, and blue primary color inks and the following characteristic ink A1 and characteristic ink B1 according to conventional methods. That is, after the colorant component and the dispersant component are dispersed together, other components are added and mixed, and insoluble components having a size greater than a certain size are filtered to prepare an ink. The obtained inks were combined to prepare ink set 1.

[0119]

[0120] C.I. Pigment Yellow 74 3.0% by weight

[0121] Dispersant (styrene-acrylic acid copolymer) 1.0% by weight

[0122] Glycerin 15.0% by weight

[0123] Ethylene glycol 5.0% by weight

[0124] 2-pyrrolidone 2.0% by weight

[0125] 1,2-Hexanediol 5.0% by weight

[0126] Orfin E1010 0.5% by weight

[0127] Ion-exchanged water balance

[0128] Total 100.0% by weight

[0129]

[0130] C.I. Pigment Red 202 1.5% by weight

[0131] Dispersant (styrene-acrylic acid copolymer) 0.5% by weight

...

Embodiment 2

[0181] In the above ink set 1 (Example 1), an ink set 2 having the same configuration as the above ink set 1 was produced except that the following special ink A2 and special ink B2 were used instead of the special ink A1 and the special ink B1.

[0182]

[0183] C.I. Pigment Red 177 2.0% by weight

[0184] Dispersant (styrene-acrylic acid copolymer) 0.7% by weight

[0185] Glycerin 15.0% by weight

[0186] Ethylene glycol 5.0% by weight

[0187] 2-pyrrolidone 2.0% by weight

[0188] 1,2-Hexanediol 5.0% by weight

[0189] Orfin E1010 0.5% by weight

[0190] Ion-exchanged water balance

[0191] Total 100.0% by weight

[0192]

[0193] C.I. Pigment Violet 23 2.0% by weight

[0194] Dispersant (styrene-acrylic acid copolymer) 0.7% by weight

[0195] Glycerin 15.0% by weight

[0196] Ethylene glycol 5.0% by weight

[0197] 2-pyrrolidone 2.0% by weight

[0198] 1,2-Hexanediol 5.0% by weight

[0199] Orfin E1010 0.5% by weight

[0200] Ion-...

Embodiment 3

[0203] In the above ink set 1 (Example 1), an ink set 3 having the same configuration as the above ink set 1 was produced except that the following special ink A3 and special ink B3 were used instead of the special ink A1 and the special ink B1.

[0204]

[0205] C.I. Pigment Red 264 2.0% by weight

[0206] Dispersant (styrene-acrylic acid copolymer) 0.7% by weight

[0207]Glycerin 15.0% by weight

[0208] Ethylene glycol 5.0% by weight

[0209] 2-pyrrolidone 2.0% by weight

[0210] 1,2-Hexanediol 5.0% by weight

[0211] Orfin E1010 0.5% by weight

[0212] Ion-exchanged water balance

[0213] Total 100.0% by weight

[0214]

[0215] C.I. Pigment Violet 23 2.0% by weight

[0216] Dispersant (styrene-acrylic acid copolymer) 0.7% by weight

[0217] Glycerin 15.0% by weight

[0218] Ethylene glycol 5.0% by weight

[0219] 2-pyrrolidone 2.0% by weight

[0220] 1,2-Hexanediol 5.0% by weight

[0221] Orfin E1010 0.5% by weight

[0222] Ion-...

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Abstract

The present invention provides an ink set, at least comprises: a yellow ink the hue angle H[deg.], defined in the CIE LAB space on a recording medium (PM photographic paper, ditto for the followings), of which ranges from about 80[deg.] to about 110[deg.], a magenta ink the hue angle H[deg.] of which ranges from about 330[deg.] to about 360[deg.], and a cyan ink the hue angle of which ranges from about 230[deg.] to about 260[deg.], and a below-mentioned ink (A) and / or a below-mentioned ink (B). By using such an ink set, a printed matter having a wide color reproduction range, a high color saturation, and a good granularity, and exhibiting a gloss can be provided, and an ink set having a high reliability as an ink set for ink-jet recording.

Description

technical field [0001] The present invention relates to an ink set having at least three inks of yellow, red and blue and other special inks, and particularly relates to a pigment ink set and an inkjet recording method using the pigment ink set. Background technique [0002] Compared with dye inks, pigment inks generally have superior image fastness of printed matter, and are used in various applications that fully utilize their characteristics, such as wide-format color inkjet recording inks for the symbol and display markets. For this color inkjet recording, a three-color ink set with three-color pigment inks of yellow (Y), red (M) and blue (C) as the three primary colors of subtractive color mixing is generally used, or black ( K) from the four-color ink set, thus showing a variety of hues. [0003] However, the above-mentioned three-color or four-color ink sets have problems such as a narrow color reproduction range and lower chromaticity of the printed part (mixed colo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00C09D11/322C09D11/326C09D11/328C09D11/38C09D11/40H04N1/54
CPCC09D11/40H04N1/54
Inventor 片冈修一竹本清彦
Owner SEIKO EPSON CORP
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