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Ink composition, method of ink-jet recording with the same, and recording object

An ink composition, composition technology, applied in the direction of copying/marking method, ink, application, etc., can solve problems such as uneven color balance, damage to image style, and reduce image quality, and achieve the effect of improving reliability

Inactive Publication Date: 2007-05-09
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the color balance of the image as a whole becomes uneven, degrading the image quality, so it needs to be improved
[0006] In addition, in recent years, glossy paper has been widely used as a recording medium with a style similar to that of photographs, but due to the phenomenon of bronze floating caused by specific colors, there is a difference in the glossiness on the surface of the printed matter, which obviously damages the style of the image, so from There is also a strong demand for improvement from the viewpoint of maintaining the uniform glossiness of the entire image

Method used

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  • Ink composition, method of ink-jet recording with the same, and recording object
  • Ink composition, method of ink-jet recording with the same, and recording object
  • Ink composition, method of ink-jet recording with the same, and recording object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11 and comparative example 1～8

[0287] The components were mixed and dissolved in the compounding ratio shown in Table 9, and pressure filtration was performed through a membrane filter with a pore size of 1 μm to prepare the respective ink compositions of Examples 1 to 11 and Comparative Examples 1 to 8. Each component of the ink composition shown in Table 9 represents the weight % of each component relative to the total amount of the ink composition. In addition, M dye 1 in Table 9 is a compound represented by following formula (6).

[0288] Formula (6)

[0289] [chemical 15]

[0290]

[0291] (In formula (6), M represents NH 4 or Na, NH 4 :Na=1:1 (molar ratio). )

[0292] M dye 2 is a compound of dye 8 in Table 3, comparative dye 1 is C.I.Direct Red227, and comparative dye 2 is C.I.Acid Red 249.

[0293] The number of moles of Li and Na+K+NH in this combination 3 The number of moles of Li+Na+K+NH relative to the number of moles of carboxyl groups of 2-naphthoic acid 3 The molar ratio of Na+K+NH...

Embodiment 12～21 and comparative example 9～15

[0361] The components were mixed and dissolved in the compounding ratio shown in Table 14, and filtered under pressure with a membrane filter having a pore size of 1 μm to prepare the respective ink compositions of Examples 12 to 21 and Comparative Examples 9 to 15. Each component of the ink composition shown in Table 14 represents the weight % of each component relative to the total amount of the ink composition. It should be noted that, in the composition of Comparative Example 12, 2-naphthoic acid was not completely dissolved, and an ink composition usable for evaluation could not be obtained. In addition, in Comparative Example 13, the pH of the ink was 11.8, and there was a problem with the ink resistance of the printed part, so no evaluation was performed.

[0362] The number of moles of lithium ions and the number of moles of sodium ions + potassium ions to the number of moles of sulfoalkyl groups having ionic hydrophilic groups in the cyan dye in this composition, the ...

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Abstract

The invention improves non-clogging properties and suitability for ink droplet deflection. An ink composition comprising water, a colorant, and an aromatic compound having a carboxy group, characterized by containing at least one member selected from the group consisting of sodium, potassium, and ammonium ions and further containing lithium ions; or an ink composition comprising water, a specific cyan dye, and an aromatic compound having a carboxy group, characterized by containing lithium ions and sodium and / or potassium ions.

Description

technical field [0001] The present invention relates to an inkjet composition suitable for inkjet recording, in particular, it is excellent in fastness of printed matter (mainly gas resistance, light resistance, moisture resistance), copper light floating resistance (bronze resistance), and is excellent in clogging. An ink composition with improved recovery and ink droplet deflection countermeasures, an inkjet recording method using the ink composition, and a recorded matter recorded by the recording method. Background technique [0002] Inkjet recording is a method of ejecting an ink composition as droplets from fine nozzles to record characters or images (hereinafter, sometimes simply referred to as "images") on the surface of a recording medium. As an inkjet recording method, there are practical applications: using electrostrictive elements to convert electrical signals into mechanical signals, intermittently ejecting the ink composition stored in the nozzle head part, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00B41M5/00B41J2/01C09D11/322C09D11/328
Inventor 半村昌弘北村和彦黄木康弘
Owner SEIKO EPSON CORP
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