| 发明名称 |
INK JET RECORDING INK, INK JET RECORDING METHOD, INK JET RECORDING HEAD, AND INK JET RECORDING APPARATUS |
| 摘要 |
An ink jet recording ink including a pigment; water; and water-soluble compounds. The pigment comprises a resin-dispersed pigment dispersed with a (meth)acrylate-based random copolymer having an acid value of 100-160 mgKOH/g. The water-soluble compounds include at least ethylene urea and a water-soluble compound having a hydrophilicity-hydrophobicity coefficient defined by the following equation (A) of 0.37 or less The total content of the water-soluble compounds is 22-50 mass % with respect to the total amount of the ink The content of the ethylene urea is 11.0 mass % or more with respect to the total amount of the ink, and the proportion of the amount of the ethylene urea in the total amount of the water-soluble compounds is 50% by mass or less,;Hydrophilicity-hydrophobicity coefficient=((water activity value of 20% aqueous solution)−(molar fraction of water in 20% aqueous solution))/(1−(molar fraction of water in 20% aqueous solution)) Equation (A). |
| 申请公布号 |
US2015070436(A1) |
申请公布日期 |
2015.03.12 |
| 申请号 |
US201414474547 |
申请日期 |
2014.09.02 |
| 申请人 |
CANON FINETECH INC. |
发明人 |
Aratani Kanako;Aoto Ryuta;Sumikawa Yuusuke;Tsutsui Takahiro;Suzuki Shintaro;Kawakami Masato |
| 分类号 |
B41J2/14;C09D125/14;C09D11/322;C09D11/38;B41J2/175;C08K5/3415 |
主分类号 |
B41J2/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An ink jet recording ink, comprising:
a pigment; water; and water-soluble compounds, wherein the pigment comprises a resin-dispersed pigment dispersed with a (meth)acrylate-based random copolymer having an acid value of 100 mgKOH/g or more and 160 mgKOH/g or less, wherein the water-soluble compounds include at least ethylene urea and a water-soluble compound having a hydrophilicity-hydrophobicity coefficient defined by the following equation (A) of 0.37 or less, wherein a total content of the water-soluble compounds is 22 mass % or more and 50 mass % or less with respect to a total amount of the ink, and wherein a content of the ethylene urea is 11.0 mass % or more with respect to the total amount of the ink, and a proportion of an amount of the ethylene urea in a total amount of the water-soluble compounds is 50% by mass or less,
Hydrophilicity-hydrophobicity coefficient=((water activity value of 20% aqueous solution)−(molar fraction of water in 20% aqueous solution))/(1−(molar fraction of water in 20% aqueous solution)) Equation (A). |
| 地址 |
Misato-shi JP |
