- Patent Title: Inkjet ink, ink cartridge containing the inkjet ink, inkjet recording method using the inkjet ink, inkjet recording apparatus using the ink cartridge, and print formed by the inkjet ink
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Application No.: US13957673Application Date: 2013-08-02
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Publication No.: US09598589B2Publication Date: 2017-03-21
- Inventor: Mitsuru Naruse , Minoru Hakiri , Masayasu Nonogaki
- Applicant: Mitsuru Naruse , Minoru Hakiri , Masayasu Nonogaki
- Applicant Address: JP Tokyo
- Assignee: RICOH COMPANY, LTD.
- Current Assignee: RICOH COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2012-202692 20120914
- Main IPC: C09D11/00
- IPC: C09D11/00 ; C09D11/30 ; C09D11/326 ; C09D11/106 ; C09D11/107
Abstract:
An inkjet ink is provided. The inkjet ink includes water; a penetrant, a pigment, and a polymer compound. The polymer compound includes a unit (A) including a functional group having the below-mentioned formula (1) or (2), and another unit (B) including a carboxyl group. The unit (A) is included in the polymer compound in an amount of from 30% to 90% by weight based on the total weight of the polymer compound.
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