Patent ID: 11926741
Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 1:
2. An inkjet ink comprising:
a quinacridone solid solution pigment comprising a solid solution of unsubstituted quinacridone and a 2,9-dialkylquinacridone, and having a major axis diameter of particles of 20 to 80 nm;
a piment dispersant; and
water, wherein
the quinacridone solid solution pigment has diffraction peaks where values of 2θ in)(2θ±0.2°) expressed using a Bragg angle (θ) are 27.4°, 13.8°, and 5.9° in powder X-ray diffraction, and
an intensity ratio of the diffraction peak at the 13.8° is 76 and an intensity ratio thereof at the 27.4° is 71, each relative to an intensity of the diffraction peak at the 5.9° as 100.