| 摘要 |
PURPOSE:To make it possible to produce stable and uniform ink particles by setting the frequency of exciting voltage at a specified value in relation to the resonant frequency of liquid in a nozzle in a device to make ink particles by exciting pressurized ink in the nozzle. CONSTITUTION:Pressurized ink 14 supplied to a nozzle 11 is subjected to vibration by the fact that an electromechanical conversion element 12 is applied exciting voltage Ve from an exciting source 13 and excited, and the vibration is transmitted to an ink column 1 to separate ink into ink particles. Here, the fluid resonant frequency fr of the ink 14 in the nozzle 11 is shown by the formula (in the formula C is the velocity of sound in the ink 14, L is the length of the nozzle, and (n) is an integral number over 1). Ink particles 2 with always uniform size are obtained even if nozzles in which spread of manufacture accuracy is found are used by setting the frequency of the exciting voltage V of an electromechanical conversion element 12 that is mounted on a nozzle such as the nozzle 11 at F=fr/2(1-a). |
