公开(公告)号：US20240198666A1

公开(公告)日：2024-06-20

申请号：US18522280

申请日：2023-11-29

Applicant: FUJIFILM Corporation

Inventor： Baku NISHIKAWA ,  Yuta MIZOUCHI ,  Yusuke WATADA

IPC: B41J2/045

CPC classification number: B41J2/04588 ,  B41J2/04535 ,  B41J2/04581

Abstract: A drive waveform creation method, an information processing apparatus, and a program that enable even a technician not having professional knowledge to efficiently create a drive waveform suitable for ejecting liquid to be used.
A method of creating a drive waveform to be used for driving a piezoelectric element of a liquid ejection head including the piezoelectric element includes, via one or more processors, predicting flight of liquid to be ejected by the liquid ejection head in a case of inputting an unknown drive waveform using a machine learning model that is trained through machine learning using data related to an actual flight shape of the liquid in a case where each of a plurality of drive waveforms is applied to the piezoelectric element using the liquid and the liquid ejection head, and determining a drive waveform suitable for ejecting the liquid based on the prediction of the flight.

公开(公告)号：US20240140088A1

公开(公告)日：2024-05-02

申请号：US18488959

申请日：2023-10-17

Applicant: FUJIFILM Corporation

Inventor： Yuta MIZOUCHI

IPC: B41J2/045

CPC classification number: B41J2/04588 ,  B41J2/04541 ,  B41J2/04581

Abstract: A drive waveform generated by a processor includes, within one drive period, a jetting pulse group for jetting a liquid droplet from a nozzle, and a voltage swing for preventing the liquid droplet from being jetted from the nozzle, three or more voltage swings are disposed after a first jetting pulse which is a last jetting pulse in the jetting pulse group, a start end of a first voltage swing immediately after the first jetting pulse is disposed at a position separated from a start end of the first jetting pulse by about a resonance pulse period, and a start end of a second voltage swing immediately after the first voltage swing is disposed at a position separated from the start end of the first voltage swing by about a resonance pulse width.