In recent years, inkjet printing technology has been applied to various fields, including home and office printers, all the way to large format printers used in the professional arts. Because of the different demands required for each application, we have had to adapt our inkjet technology to a wide array of inks, media, printing speeds, and different droplet sizes. Comparatively, it's easy to develop unique print heads specifically adapted to each application. However it's impractical to produce various types of inkjet heads with respect to print head production. The key is to produce a print head that is adaptable to different applicationsTo design a print head that is both adaptable and manufacturable at the same time, the use of waveform control must be considered. By employing a waveform control method known as MLP type MACH, we can change the properties of droplets dynamically. Droplet mass can be widely changed while leaving the droplet velocity as same, or droplet velocity can be changed while leaving the droplet mass the same.This paper is intended to show the characteristics and key technology of the piezoelectric inkjet heads, and their ability to adapt to various applications requiring differing inks and sizes of ink droplets.