Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 12, 2008
Patent Application Number
11452515
Date Filed
June 14, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
The invention relates to a solenoid valve made using certain materials which is capable of operation at high frequencies and which can be made as a compact unit. The plunger (1) is made from an electromagnetic material having a saturation flux density greater than 1.2 Tesla preferably more than 1.6 Tesla, the bore leading from the valve head chamber (14) to the nozzle orifice (12) has a length to diameter ratio of less than 5:1 preferably between 2:1 and 4:1 and the nozzle orifice (12) has a diameter of 80 micrometer or less. The invention also relates to method for operating a drop on demand ink jet printer incorporating such a valve.
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