Invention Grant
- Patent Title: Production process for self-dispersible pigment, self-dispersible pigment, ink, ink cartridge and ink jet recording method
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Application No.: US14748717Application Date: 2015-06-24
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Publication No.: US09458323B2Publication Date: 2016-10-04
- Inventor: Ryuji Higashi , Taiki Watanabe , Koichi Suzuki , Hiroshi Tanabe
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2014-133782 20140630
- Main IPC: C09D11/00
- IPC: C09D11/00 ; C09B67/00 ; C09C1/56 ; C09D11/322 ; B41J2/21

Abstract:
The invention provides a production process for a self-dispersible pigment, having a step of bonding a functional group containing a hydrophilic group to a particle surface of a pigment by causing at least one treatment agent selected from the group consisting of a compound represented by the following general formula (1) and a compound represented by the following general formula (2) to react with the particle surface of the pigment: wherein A1 and A2 are each a carboxylic acid group or the like.
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