Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-06-14
2008-08-12
Douyon, Lorna M. (Department: 1796)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S047000, C347S085000, C239S585100, C239S585500, C251S129150, C008S445000
Reexamination Certificate
active
07410245
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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Bates Christopher Michael
Fox Michael John
Horsnell David Andrew
Lecheheb Ammar
Prime Oliver John
Douyon Lorna M.
Khan Amina
McAndrews Held & Malloy Ltd.
Willett International Limited
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