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AssigneeHitachi Printing Solutions, Ltd.
InventorsShinya Kobayashi, Takahiro Yamada, Hitoshi Kida, Kunio Satou, Katsunori Kawasumi, Kazuo Shimizu
Estimating the term…
When ink droplets are ejected, angled or splashed where a plurality of minute ink droplets are generated, angled or splashed ink clings on an electrode 401, 402 and increases the amount of electric current conducted therethrough. Hence, the defectiveness of ink ejection can be detected by monitoring the amount of the electric current. When the defectiveness of ink ejection is detected, ejection data D is retrieved and updates the ejection data D based on a condition register S, and set to a defect register E. When the defect register E has only one element that takes a condition value of 1 indicating defectiveness, the corresponding nozzle is identified as defective. The restoring means reallocates dots, which have been originally allocated to the defective nozzle, to neighboring nozzle.
An ink jet recording device comprising:
A method of detecting a defective nozzle among a plurality of nozzles formed in a head of an ink jet recording device that includes the head and a pair of electrodes for generating a deflection electric field common to the plurality of nozzles, comprising the steps of:
Dependencies are inferred from the claim text.