Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Wataru Sugiyama0
Naokazu Tanahashi0
Noritsugu Ito0
Shingo Ito0
Date of Patent
February 23, 2010
0Patent Application Number
116908180
Date Filed
March 24, 2007
0Patent Primary Examiner
Patent abstract
In an inkjet printer according to an aspect, a print head includes a nozzle and ejects ink through the nozzle. A maintenance unit performs a maintenance operation to recover an ejection state of the nozzle. A sealing unit selectively exposes and seals the nozzle. A first timer unit measures a sealing time when the sealing unit seals the nozzle. A second timer unit measures an exposing time when the sealing unit exposes the nozzle. A dryness obtaining unit obtains a dryness level of the nozzle based on the sealing time and the exposing time. A limit level storing unit stores a predetermined dryness level as a limit level. A control unit activates the maintenance unit when the obtained dryness level is equal to or above the limit level.
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