Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takahiro Yamada0
Hitoshi Kida0
Date of Patent
June 23, 2009
0Patent Application Number
114275020
Date Filed
June 29, 2006
0Patent Primary Examiner
Patent abstract
The method of ejecting microdroplets of ink includes a first step for generating one ink column on the outside of the nozzle and for separating a tip end of the one ink column from a remaining part of the one ink column to form a microdroplet of ink on the outside of one nozzle, and a second step for controlling an ink volume velocity in the ink pressure chamber that is connected to the nozzle to generate another ink column and to push the another ink column out of the nozzle, thereby causing the another ink column to overtake and merge with the remaining part of the one ink column and to return into the nozzle while pulling the remaining part of the one ink column back into the nozzle.
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