Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Osamu Shinkawa0
Masashi Kamiyanagi0
Date of Patent
October 11, 2022
0Patent Application Number
171338180
Date Filed
December 24, 2020
0Patent Citations
Patent Primary Examiner
CPC Code
A head unit includes a plurality of ejection portions that include a first ejection portion and a second ejection portion, a determination portion that determines a liquid ejection state of the first ejection portion and determines a liquid ejection state of the second ejection portion, and a storage portion that includes a first storage region storing first determination information indicating a determination result for the first ejection portion from the determination portion, and a second storage region storing second determination information indicating a determination result for the second ejection portion from the determination portion.
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