Ink set and method for recording with the ink set, recording system, record

An ink set and ink technology, applied in the directions of reproduction/marking methods, inks, applications, etc., can solve the problems of uneven whitening of reflected light, reduced color rendering in dark areas, and reduced image quality, and achieve a wide color reproduction range. , high saturation, the effect of suppressing granularity

Inactive Publication Date: 2005-10-19
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when an ink set is applied to a coated medium (recording medium) such as photographic paper at a low resolution, there is a problem that graininess due to dot representation is particularly noticeable during recording.
In addition, when the ink set is applied to plain paper (recording medium with fibers exposed on the recording surface), there are dark areas (the L* value defined in the CIELAB color space on the recording medium is about 40) The color rendering property is particularly reduced
[0008] In addition, depending on the image to be formed, the reflected light may not be constantly whitened, and it may appear to be reflected in a different color, which often leads to a decrease in the quality of the image.

Method used

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  • Ink set and method for recording with the ink set, recording system, record
  • Ink set and method for recording with the ink set, recording system, record
  • Ink set and method for recording with the ink set, recording system, record

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach A

[0042] (ink set of Embodiment A)

[0043] The ink set of the present invention, as an embodiment thereof, can provide a kind of ink set (hereinafter referred to as the ink set of embodiment A), the 1000 times diluted aqueous solution of each ink is in CI E (Commission Internationale d'Eclairage; International Lighting The L* value in the Lab colorimetric system specified by the Committee) is within the following ranges: yellow ink (Y): 89 to 94, magenta ink (M): 76 to less than 83, cyan ink (C): 74 to 87. Red ink (R): 67.5 to less than 69.

[0044] From the viewpoint of enhancing the effect of the present invention, it is preferable that the above-mentioned L* value is further within the following range.

[0045] (Y)L*: 89-93, more preferably 90-93, further preferably 90-92, especially 91-92.

[0046] (M)L*: 77-82, more preferably 78-82, further preferably 79-82, especially 81-82.

[0047] (C) L*: 75-86, more preferably 76-85, further preferably 77-83, especially 79-81.

...

Embodiment approach B

[0108] (ink set of Embodiment B)

[0109] The ink set of the present invention, as another embodiment, can provide such a kind of ink set (hereinafter referred to as the ink set of embodiment B): the 1000-fold diluted aqueous solution of each ink in the Lab chromaticity system stipulated by CIE The L* value is within the following ranges: yellow ink (Y): 89 to 94, magenta ink (M): 76 to less than 83, cyan ink (C): 74 to 87, red ink (R): 69 to 74.

[0110] From the viewpoint of enhancing the effect of the present invention, it is preferable that the above-mentioned L* value is further within the following range.

[0111] (Y)L*: 89-93, more preferably 90-93, further preferably 90-92, especially 91-92.

[0112] (M)L*: 77-82, more preferably 78-82, further preferably 79-82, especially 81-82.

[0113] (C) L*: 75-86, more preferably 76-85, further preferably 77-83, especially 79-81.

[0114] (R)L*: 69-73, more preferably 69-72, further preferably 70-72, especially 70-71.

[011...

Embodiment approach C

[0120] (ink set of Embodiment C)

[0121] The ink set of the present invention, as another embodiment, can provide such a kind of ink set (hereinafter referred to as the ink set of embodiment C): the 1000-fold diluted aqueous solution of each ink in the Lab chromaticity system stipulated by CIE The L* value is within the following ranges: yellow ink (Y): 89 to 94, magenta ink (M): 76 to less than 83, cyan ink (C): 74 to 87, red ink (R): 62 to less than 67.5.

[0122] From the viewpoint of enhancing the effect of the present invention, it is preferable that the above-mentioned L* value is further within the following range.

[0123] (Y)L*: 89-93, more preferably 90-93, further preferably 90-92, especially 91-92.

[0124] (M)L*: 77-82, more preferably 78-82, further preferably 79-82, especially 81-82.

[0125] (C) L*: 75-86, more preferably 76-85, further preferably 77-83, especially 79-81.

[0126] (R)L*: 63-67, more preferably 64-67, further preferably 65-67, especially 66...

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PUM

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Abstract

It is an object of the present invention to provide an ink set that has a wide color reproduction range, has high saturation, produces a glossy recorded image with no pronounced granularity caused by dot expression, greatly suppresses granularity caused by dot expression particularly when applied to a medium having a coating layer, and allows a recorded image with outstanding coloration to be obtained when applied to plain paper. The present invention provides an ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the Lab colorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges. (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.

Description

technical field [0001] The present invention relates to an ink set having at least three colors of yellow, magenta, and cyan, and a red ink as a characteristic ink other than these colors. The graininess caused by the expression is not obvious, and the recorded image with a glossy feeling can be obtained. Especially when it is applied to a medium with a coated layer, it can greatly suppress the graininess caused by the dot expression. When it is applied to plain paper In some cases, an ink set for recording an image with extremely excellent color rendering properties, and a recording method, recording system, and recorded product using the ink set. Background technique [0002] Pigment inks are generally superior to dye inks in image fastness of printed matter, and are used in various applications utilizing their properties, such as wide-format color inkjet recording inks for the signal and display markets. In this color inkjet recording, a three-color ink set having pigmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00
CPCC09D11/40Y10T428/24802
Inventor 片冈修一
Owner SEIKO EPSON CORP
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