Invention Grant
US08733920B2 Inkjet recording ink, ink cartridge, inkjet recording device, inkjet recording method, and ink recorded matter
有权
喷墨记录油墨,墨盒,喷墨记录装置,喷墨记录方法和油墨记录物
- Patent Title: Inkjet recording ink, ink cartridge, inkjet recording device, inkjet recording method, and ink recorded matter
- Patent Title (中): 喷墨记录油墨,墨盒,喷墨记录装置,喷墨记录方法和油墨记录物
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Application No.: US13357160Application Date: 2012-01-24
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Publication No.: US08733920B2Publication Date: 2014-05-27
- Inventor: Tomohiro Nakagawa
- Applicant: Tomohiro Nakagawa
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2011-013687 20110126
- Main IPC: B41J2/01
- IPC: B41J2/01 ; B41J2/21 ; C09D11/00

Abstract:
To provide an inkjet recording ink, which contains water, a water-soluble organic solvent, a colorant, and a surfactant, wherein the colorant contains a surfactant-dispersible pigment (A) dispersed by the surfactant, and a resin-coated pigment (B), and wherein the surfactant is a surfactant selected from the group consisting of anionic surfactants represented by the following formula (1), and having HLB value of 12 or higher: R1—O—(CH2CH2O)m-A (1) where R1 is a C2-C24 alkyl group, alkenyl group, alkylphenyl group, or alkylallyl group; A is —COOM1, —SO3M2, or —PO(OM3)OM4, where M1, M2 and M4 are each independently alkali metal, quaternary ammonium, quaternary phosphonium, or alkanolamine, and M3 is a hydrogen atom or R2(CH2CH2O)n with proviso that R2 is a C1-C4 alkyl group, alkenyl group, alkylphenyl group, or alkylallyl group, and n is an integer of 4 to 20; and m is and integer of 15 to 40.
Public/Granted literature
Information query
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