Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 29, 2008
Patent Application Number
11179928
Date Filed
July 12, 2005
Patent Primary Examiner
Patent abstract
A liquid detecting method of detecting liquid in a liquid container used on a liquid ejector by use of a liquid sensor. There are included a head cleaning step of performing a head cleaning operation after maintaining for a predetermined time or longer a state there is no flow of fluid into/from the cavity through the liquid supply port and liquid discharge port, and a detecting step of detecting a presence/absence of liquid by applying a drive signal to the piezoelectric device of the liquid sensor after the head cleaning process.
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