| 发明名称 |
Inkjet recording ink set, ink cartridge, and inkjet recording apparatus |
| 摘要 |
An inkjet recording ink set containing at least a black pigment ink and a color pigment ink which has a color selected from one or more colors, wherein the black pigment ink contains a first anionic self-emulsifying ether polyurethane resin having an acid value of 65 mgKOH/g to 85 mgKOH/g, and the at least one color pigment ink of every color contains a second anionic self-emulsifying ether polyurethane resin having an acid value 10 mgKOH/g to 40 mgKOH/g lower than those of the first anionic self-emulsifying ether polyurethane resin contained in the black pigment ink. |
| 申请公布号 |
US8740371(B2) |
申请公布日期 |
2014.06.03 |
| 申请号 |
US201013321274 |
申请日期 |
2010.05.28 |
| 申请人 |
Ricoh Company, Ltd. |
发明人 |
Hasegawa Shin;Hakiri Minoru;Naruse Mitsuru |
| 分类号 |
G01D11/00 |
主分类号 |
G01D11/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An inkjet recording ink set, comprising:
a black pigment ink; and at least one color pigment ink comprising one or more colors, wherein the black pigment ink comprises a first anionic self-emulsifying ether polyurethane resin having an acid value of 65 mgKOH/g to 85 mgKOH/g, and each color pigment ink comprises a second anionic self-emulsifying ether polyurethane resin having an acid value which is 10 mgKOH/g to 40 mgKOH/g lower than the acid value of the first anionic self-emulsifying ether polyurethane resin comprised in the black pigment ink wherein the black pigment ink further comprises carbon black and the carbon black has a volatile component of 8.0% to 12.0%.
|
| 地址 |
Tokyo JP |
