US 12,240,235 B2
Determination method and liquid ejecting apparatus
Takahiro Katakura, Okaya (JP); and Toshiro Murayama, Fujimi-machi (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 7, 2023, as Appl. No. 18/180,005.
Claims priority of application No. 2022-035029 (JP), filed on Mar. 8, 2022.
Prior Publication US 2023/0286267 A1, Sep. 14, 2023
Int. Cl. B41J 2/045 (2006.01)
CPC B41J 2/04581 (2013.01) [B41J 2/04541 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A determination method of determining a supply signal to be supplied to a first electrode and a second electrode in order to eject liquid from a liquid ejecting head including a first pressure chamber in which the liquid is stored, a first piezoelectric body that changes pressure applied to the liquid in the first pressure chamber, and the first electrode and the second electrode that drive the first piezoelectric body, the determination method comprising:
an acquisition step of acquiring, when a predetermined condition is satisfied, first information regarding a liquid ejection characteristic when a first constant potential signal of a first potential is supplied to the second electrode, and second information regarding a liquid ejection characteristic when a second constant potential signal of a second potential different from the first potential is supplied to the second electrode; and
a determination step of determining, based on the first information and the second information, the supply signal to be supplied to the first electrode and the second electrode after the predetermined condition is satisfied.