| abstract |
An image printing apparatus can print an image in which graininess is suppressed while using a color material of light blue. To achieve this, the color material of light blue satisfies the following condition.n nΔ L B ≥(Δ L C −ΔL B )>0 andn nΔ L B ≥(Δ L M −ΔL B )>0n nHere, ΔL C represents a difference in lightness between cyan ink and a blank area, ΔL M represents a difference in lightness between magenta ink and the blank area, and ΔL B represents a difference in lightness between light blue ink and the blank area. Further, the color material of light blue satisfies the following condition.n n h C +( h (C+M) −h C )/2≤ h B ≤h M −( h M −h (C+M) )/2n nHere, h C represents a hue of the cyan ink, h M represents a hue of the magenta ink, h (C+M) represents a hue of the image printed with the cyan ink and the magenta ink in the same amount, and h B represents a hue of the light blue ink. |