| US 7,582,153 B2 | ||
| Aqueous ink for inkjet | ||
| Yoshiaki Ishimaru, Amimachi (Japan); Takashi Saito, Amimachi (Japan); Akiko Hayashi, Amimachi (Japan); Sayako Nakao, Amimachi (Japan); and Yoshifumi Watanabe, Amimachi (Japan) | ||
| Assigned to Riso Kagaku Corporation, Tokyo (Japan) | ||
| Filed on Jul. 25, 2008, as Appl. No. 12/219,658. | ||
| Claims priority of application No. 2007-196385 (JP), filed on Jul. 27, 2007; and application No. 2008-109064 (JP), filed on Apr. 18, 2008. | ||
| Prior Publication US 2009/0025605 A1, Jan. 29, 2009 | ||
| Int. Cl. C09D 11/02 (2006.01) | ||
| U.S. Cl. 106—31.86 [106/31.67] | 9 Claims |
| 1. An aqueous ink for an inkjet, comprising:
a pigment;
a water-soluble organic solvent A comprising at least one of a diglycerol and a polyglycerol;
a water-soluble organic solvent B comprising a polyethylene glycol monoalkyl ether represented by formula (1): RO—(CH2CH2O)n—H wherein R represents an alkyl group having from 4 to 6 carbon atoms, and n represents an integer from 4 to 6; and
water.
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