Liquid ejecting system and head unit

Patent metadata

Field	Value
Publication number	US-12187033-B2
Application number	US-202218047219-A
Country	US
Kind code	B2
Filing date	Oct 17, 2022
Priority date	Oct 18, 2021
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

A liquid ejecting system includes a head unit that includes a pressure chamber, a drive element driven by an applied drive waveform, a vibration plate that vibrates by drive of the drive element, and a nozzle through which a liquid is ejected by a pressure applied in the pressure chamber by vibration of the vibration plate, and an input portion to which an input parameter for detecting an ejection failure of the liquid based on residual vibration of the vibration plate is input from a server through a network connection portion.

First claim

What is claimed is:

1. A liquid ejecting system comprising:
a head unit that includes a pressure chamber, a drive element driven by an applied drive waveform, a vibration plate that vibrates by drive of the drive element, and a nozzle through which a liquid is ejected by a pressure applied in the pressure chamber by vibration of the vibration plate; and
an input portion to which an input parameter for detecting an ejection failure of the liquid based on residual vibration of the vibration plate is input from a server through a network connection portion, the input parameter includes a first input parameter regarding a threshold value to be compared with a potential indicating an amplitude of the residual vibration, and the first input parameter is set so that the threshold value becomes smaller as deterioration of the drive element increases.

2. The liquid ejecting system according to claim 1 , further comprising:
an acquisition portion that acquires first information regarding the residual vibration of the vibration plate; and a detection portion that detects an ejection failure based on whether or not the potential indicating the amplitude of the residual vibration indicated by the first information exceeds the threshold value.

3. The liquid ejecting system according to claim 1 , further comprising an output portion that outputs an output parameter regarding a degree of deterioration of the drive element to the server through the network connection portion.

4. The liquid ejecting system according to claim 3 , wherein the output parameter includes a first output parameter regarding the number of times that the drive element is driven.

5. The liquid ejecting system according to claim 4 , wherein the output parameter further includes a second output parameter regarding the drive waveform.

6. The liquid ejecting system according to claim 1 , further comprising:
a liquid ejecting apparatus that includes the head unit;
a first processing apparatus that is connected to the liquid ejecting apparatus and generates recorded data used to record information regarding the liquid ejecting apparatus; and
the server.

7. The liquid ejecting system according to claim 6 , wherein the input portion and the network connection portion are provided in the first processing apparatus.

8. The liquid ejecting system according to claim 6 , wherein the input portion and the network connection portion are provided in the liquid ejecting apparatus.

9. The liquid ejecting system according to claim 6 , further comprising a second processing apparatus configured to be wirelessly connected to the first processing apparatus, wherein
the input portion and the network connection portion are provided in the second processing apparatus.

10. The liquid ejecting system according to claim 6 , further comprising a second processing apparatus configured to be wirelessly connected to the liquid ejecting apparatus, wherein
the input portion and the network connection portion are provided in the second processing apparatus.

11. A liquid ejecting system comprising:
a head unit that includes a pressure chamber, a drive element driven by an applied drive waveform, a vibration plate that vibrates by drive of the drive element, and a nozzle through which a liquid is ejected by a pressure applied in the pressure chamber by vibration of the vibration plate; and
an input portion to which an input parameter for specifying the drive element in which an ejection failure occurs is input from a server through a network connection portion, the input parameter includes a first input parameter regarding a threshold value to be compared with a potential indicating an amplitude of the residual vibration, and the first input parameter is set so that the threshold value becomes smaller as deterioration of the drive element increases.

12. A head unit that includes a pressure chamber, a drive element driven by an applied drive waveform, a vibration plate that vibrates by drive of the drive element, and a nozzle through which a liquid is ejected by a pressure applied in the pressure chamber by drive of the drive element, the head unit comprising:
a network connection portion that is connected to a server through a network; and
an input portion to which an input parameter for detecting an ejection failure of the liquid based on residual vibration of the vibration plate is input from the server through the network connection portion, the input parameter includes a first input parameter regarding a threshold value to be compared with a potential indicating an amplitude of the residual vibration, and the first input parameter is set so that the threshold value becomes smaller as deterioration of the drive element increases.

Assignees

• Seiko Epson Corp

Inventors

• Hanamura Yuki
• Yamamoto Takao
• Ito Nobuaki
• Fukuda Shunya

Classifications

• B41J2/025

  by vibration · CPC title

• B41J2/04571

  detecting viscosity · CPC title

• B41J2002/14491

  Electrical connection · CPC title

• B41J2002/14419

  Manifold · CPC title

• B41J2002/14241

  having a cover around the piezoelectric thin film element · CPC title