Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to attribute – absence or presence of work
Patent
1996-07-26
1998-04-28
Czaja, Donald E.
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to attribute, absence or presence of work
118305, 239346, 239368, 239369, 239371, B05B 1302, B05B 5025
Patent
active
057439605
ABSTRACT:
A reagent dispensing apparatus is provided including a positive displacement syringe pump in series with a solenoid valve dispenser. The pump is controlled by a stepper motor or the like to provide an incremental quantity or continuous flow of reagent to the solenoid valve dispenser. The solenoid valve is opened and closed in at a predetermined frequency and duty cycle to dispense droplets of reagent onto a target substrate at the metered flow rate.
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Czaja Donald E.
Ruller Jacqueline A.
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