Pigment dispersion, ink composition, inkset, and recording device
AssigneeSeiko Epson Corporation
InventorsTakashi Oyanagi, Keitaro Nakano
Life of this patent
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Abstract
A pigment dispersion containing a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 μm, and the condition R50/Z>5 is satisfied.
Claims14
A pigment dispersion comprising a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 μm, and the condition R50/Z>5 is satisfied, wherein the particle size distribution CV value of the metal pigment, as determined by the following Equation 1 is 60 or less:
- CV value=standard deviation of particle size distribution/average particle diameter×100. Equation 1
Dependencies are inferred from the claim text.