Invention Grant
- Patent Title: Aqueous ink, ink cartridge and ink jet recording method
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Application No.: US15989443Application Date: 2018-05-25
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Publication No.: US10259964B2Publication Date: 2019-04-16
- Inventor: Sayoko Nagashima , Mikio Sanada , Shigemoto Abe
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JP2017-108897 20170601; JP2018-095417 20180517
- Main IPC: C09D11/322
- IPC: C09D11/322 ; C09D11/38 ; B41J2/175 ; B41M5/00 ; C09D11/324

Abstract:
Provided is an aqueous ink that can record an image excellent in color developability and is excellent in sticking recovery property. The aqueous ink for ink jet includes: a pigment; and a surfactant, wherein the pigment includes a self-dispersible pigment in which at least one functional group selected from the group consisting of (i) an anionic group and (ii) a group in which another atomic group and an anionic group are bonded to each other is bonded to a surface of a particle of carbon black and a density of the functional group is 0.10 μmol/m2 or more to 0.48 μmol/m2 or less and wherein the surfactant includes an amino acid type surfactant in which a nitrogen atom capable of becoming a cation has a structure of a secondary amine or a tertiary amine.
Public/Granted literature
- US20180346746A1 AQUEOUS INK, INK CARTRIDGE AND INK JET RECORDING METHOD Public/Granted day:2018-12-06
Information query
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