Inkjet recording method

An ink jet recording method using an ink jet recording device that includes an ink jet head for jetting an ink, and a circulation flow passage for circulating the ink discharged from the ink jet head and returning the ink to the ink jet head, the method comprising:

• circulating the ink in the circulation flow passage and jetting the ink from the ink jet head to apply the ink onto a recording medium,
• wherein the ink contains water and a white pigment which is a titanium dioxide particle,
• the number of white large particles which are particles having a particle diameter of 0.8 μm to 5 μm in the white pigment of the ink is 1.00×104 pieces/cm3 or greater,
• the circulation flow passage includes a circulation tube connected to the ink jet head and returning the ink to the ink jet head, and
• a velocity ratio (1) defined by Equation (1) is 5.0×103 or greater and 1.4×105 or less,
• Velocity
• ⁢
• ratio
• ⁢
• (
• 1
• )
• =
• Vc
• /
• (
• Vslp
• ×
• log
• ⁡
• (
• Pn
• )
• )
• Equation
• ⁢
• (
• 1
• )
• Vslp
• =
• {
• (
• ρ
• -
• ρ
• ⁢
• w
• )
• ⁢
• gR
• 2
• }
• /
• (
• 18
• ⁢
• η
• )
• Equation
• ⁢
• (
• A
• )
• in Equation (1), Vc represents a circulation flow rate of the ink in units of cm/s in a connecting portion between the circulation tube and the ink jet head, Vslp represents a sedimentation velocity of the white large particles in units of cm/s, which is defined by Equation (A), Pn represents the number of the white large particles in the ink in units of pieces/cm3,
• in Equation (A), ρ represents 4.23, ρw represents a density of a solvent in the ink in units of g/cm3, g represents an acceleration of gravity in units of cm/s2, R represents a median diameter of the white large particles in units of cm, and
• η represents a viscosity of the solvent in the ink at 30° C. in units of g/cm·s.