The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2025
Filed:
Jan. 06, 2023
Seiko Epson Corporation, Tokyo, JP;
Shinichi Tsubota, Azumino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
There is provided a maintenance method of a head unit including a first nozzle array and a second nozzle array, the method including: in a first period, supplying a first driving signal having a first waveform to one first driving element corresponding to one first nozzle belonging to the first nozzle array to eject the liquid from one first nozzle; and supplying a second driving signal having a second waveform to one second driving element corresponding to one second nozzle belonging to the second nozzle array to eject the liquid from one second nozzle; and in a second period, supplying a third driving signal having a third waveform to the one first driving element to eject the liquid from the one first nozzle; and supplying a fourth driving signal having a fourth waveform to the one second driving element to eject the liquid from the one second nozzle.