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Ink set

A technology of ink and composition, applied in the field of ink sets, can solve problems such as limited color reproduction range

Inactive Publication Date: 2010-03-03
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, L * a * b * The color model is only an index used to explain the color space conceptually, and its color reproduction range is limited
That is, for example, when an image is formed on a recording medium using an ink or an ink set of a pigment system, there is a possibility that the * a * b * The color of the color model to reproduce the color

Method used

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Examples

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Embodiment Construction

[0023] The present invention is an ink set having a cyan ink composition containing C.I. Pigment Blue 15:6 or C.I. Pigment Blue 60 as a pigment, and a magenta ink composition, the magenta The pigment composition contains at least one quinacridone pigment selected from the group consisting of C.I. Pigment Violet 19, C.I. Pigment Red 122, C.I. Pigment Red 202 and C.I. Pigment Red 209, or at least two of the above-mentioned groups A quinacridone solid solution pigment formed from the above pigments is used as a pigment.

[0024] Hereinafter, the cyan ink composition and the magenta ink composition constituting the ink set of the present invention will be described in detail.

[0025] 1. Pigment

[0026] In the present invention, C.I. Pigment Blue 15:6 (hereinafter abbreviated as "P.B.15:6") and C.I. Pigment Blue 60 (hereinafter abbreviated as "P.B.60") used in the cyan ink composition can use commercially available pigments.

[0027] In addition, C.I. Pigment Violet 19 (hereina...

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Abstract

The present invention provide an ink set having a wide color reproduction range, in particular, an ink set having a wide color reproduction range of a blue region in a dark portion. Such a color could not been reproduced with known ink sets. An ink set includes a cyan ink composition containing C.I. pigment blue 15:6 or C.I. pigment blue 60 as a pigment and a magenta ink composition containing at least one quinacridone pigment selected from the group consisting of C.I. pigment violet 19, C.I. pigment red 122, C.I. pigment red 202, and C.I. pigment red 209, or a quinacridone solid solution pigment formed of at least two selected from the above group, as a pigment.

Description

technical field [0001] The present invention relates to an ink set having an enlarged color reproduction area (full range), and particularly to an ink set having an enlarged color reproduction area of ​​a dark blue area. Background technique [0002] As one of the color models, known CIE / L * a * b * Color system. According to the CIE / L * a * b * , all colors (spectrum) in the visible light region that humans can observe can be expressed by chromaticity coordinates. [0003] CIE / L * a * b * The 3 parameters of the color system (L * 、a * , b * ), L * Indicates color brightness (brightness), a * with b * Indicates the chroma that shows hue and chroma. Here, L * =0 means black, L * =100 means white. In addition, a * Indicates the position between the colors red and green, negative values ​​represent green, and positive values ​​represent red. b * Indicates the position between the color yellow and blue, the negative value represents blue, and the positive v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00B41M5/00C09D11/322C09D11/326C09D11/38
CPCC09D11/40
Inventor 盐野翔平佐野强
Owner SEIKO EPSON CORP
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