| abstract |
PROBLEM TO BE SOLVED: To perform image formation with high image density, sufficient color developability, color reproducibility, character bleeding, color boundary bleeding, double-sided printability, and drying property using a high viscosity recording liquid. Nozzle down due to pressure fluctuation in the head occurs, and stable image formation cannot be performed. When a fluid resistance of a filter 206 provided in a sub tank 15 for supplying ink to a recording head 14 is reduced, a pressure fluctuation in the liquid discharge head is P, a fluid resistance is R, and a recording liquid flow rate is Q. The pressure was adjusted so that the pressure fluctuation P in the liquid discharge head satisfied the condition of P = R × Q <500 mmAq. [Selection] Figure 7 |