Ink set and liquid droplet discharging apparatus

摘要

An ink set according to the invention includes a first ink composition which contains a first coloring material, and a second ink composition which contains a second coloring material other than the first coloring material, in which the first coloring material is at least one of a white coloring material formed of second particles with an average particle diameter of 200 nm or more to 1 μm or less formed by collecting a plurality of first particles with an average particle diameter of less than 200 nm, or a photoluminescent pigment with a specific gravity of 2.0 or more, and the viscosity of the first ink composition at 20° C. is 1.3 times or more with respect to the viscosity of the second ink composition at 20° C.

主权项

1. A liquid droplet discharging apparatus, comprising:
an ink set comprising:
a first ink composition which contains a first coloring material; anda second ink composition which contains a second coloring material other than the first coloring material,wherein the first coloring material is at least one of a white coloring material formed of second particles with an average particle diameter of 200 nm or more to 1 μm or less formed by collecting a plurality of first particles with an average particle diameter of less than 200 nm, or a photoluminescent pigment with a specific gravity of 2.0 or more, andviscosity of the first ink composition at 20° C. is 1.3 times or more with respect to the viscosity of the second ink composition at 20° C.; a first nozzle which discharges the first ink composition; a first ink supply path which circulates the first ink composition; a first pump unit which supplies the first ink composition to the first nozzle via the first ink supply path; a second nozzle which discharges the second ink composition; a second ink supply path which circulates the second ink composition; and a second pump unit which supplies the second ink composition to the second nozzle via the second ink supply path, wherein a surface area of a cross-section of the first ink supply path is larger than the surface area of a cross-section of the second ink supply path.