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Ink composition and printed matter

一种油墨组合物、组合物的技术，应用在印刷、油墨、运输和包装等方向，能够解决图像耐气体性低、很难喷出等问题

Active Publication Date: 2012-08-08
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although the ink proposed in Patent Document 1 can obtain a good metallic luster, it is difficult to eject it stably from an inkjet device.
In addition, there is a problem that the gas resistance of the formed image is low

Method used

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  • Ink composition and printed matter
  • Ink composition and printed matter
  • Ink composition and printed matter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0129] Next, specific examples of the present invention will be described.

[0130] [1] Preparation of ink composition

Embodiment 1

[0132] Polyvinylpyrrolidone (PVP, weight average molecular weight: 10,000) was heated at 70° C. for 15 hours, and then cooled at room temperature. 1000 g of this PVP was added to 500 ml of ethylene glycol solution to prepare a PVP solution. Add 500ml of ethylene glycol into another container, and add 128g of silver nitrate and fully stir with an electromagnetic stirrer to prepare a silver nitrate solution. While stirring the PVP solution with an overhead mixer at 120°C, silver nitrate solution was added, and the reaction was carried out by heating for about 80 minutes. And, thereafter, it was cooled at room temperature. The obtained solution was centrifuged at 2200 rpm for 10 minutes with a centrifuge. Then, the separated silver particles were taken out and added to 500ml ethanol solution to remove the remaining PVP. Next, centrifugation is performed again to take out the silver particles. Furthermore, the silver particle which took out was dried on the conditions of 35 de...

Embodiment 2～7

[0136] An ink composition was prepared in the same manner as in Example 1 above except that the composition shown in Table 1 was adjusted by adjusting the types and usage amounts of the components used to prepare the ink composition.

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Abstract

An ink composition of the invention is an ink composition to be ejected by an ink jet system and includes silver particles and water. When a composition A formed of components of the ink composition other than the water is held in an atmosphere at an ambient temperature of 23 DEG C. and a relative humidity (RH) of 50%, the equilibrium moisture content of the component A is in a range of 2 to 7.8 percent by mass.

Description

technical field [0001] The present invention relates to ink compositions and printed matter. Background technique [0002] As inks used for inkjet printing, cyan, magenta, yellow, and black inks are generally used to form so-called full-color images. In addition, for the purpose of improving the image quality of the formed image, ink multi-colors (for example, 6 colors including light magenta and light cyan inks in addition to the above-mentioned 4 kinds of inks) are being carried out. [0003] However, even if such multi-colored inks are used, there is a problem that metallic luster cannot be expressed. [0004] Therefore, in recent years, inkjet inks (metallic inks) using metal particles have been proposed (for example, refer to Patent Document 1). [0005] However, although the ink proposed in Patent Document 1 can obtain a relatively good metallic luster, it is difficult to eject it stably from an inkjet device. In addition, there is a problem that the gas resistance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/14B41M5/00B41J2/01
CPCC09D11/38C09D11/322Y10T428/24802
Inventor 传田敦平田志贵佐野强
Owner SEIKO EPSON CORP
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