Patent ID: 9272510
Filing Date: 2016-03-01
CPC Classification: B41J

Claim Text:
1. A printing apparatus which performs printing by an ink jet method, comprising: an ink jet head which ejects ink droplets; an ink storage portion and an ink supply path, for supplying an ink to the ink jet head; and a driving signal output portion which outputs a driving signal that causes the ink droplets to be ejected from the ink jet head, wherein the ink jet head includes: wherein corresponding to the driving signal, the piezoelectric element is displaced to the side opposite to the nozzle and pulls a preset amount of the ink into the ink chamber through the ink flow path, and then the piezoelectric element is displaced to the side of the nozzle, the thin film is pressed to be brought into contact with a bottom surface of the cavity portion of the nozzle plate, so that the piezoelectric element causes all of the ink in the ink chamber to be ejected from the nozzle.