To provide a low cost color ink ejector in which the black pixel area (Bk recording part) of a recording image can be obtained at a high image density while keeping harmony with other color tone areas without disturbing the color tone of Bk and a black line can be recorded to make a sufficiently thick impression.

When the viscosity of Bk ink is 0.8-0.95 times as high as that of ink of other color tones (Bk ink 9-15 in Fig. 5), ejection stability of Bk ink is good and the volume of ejected ink liquid drops of B, G and R is balanced. When experiments are conducted not only at 25°C but also in a temperature range of 5-45°C, stability and image quality as good as those at 25°C are attained.