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US 4,375,066 AGranted
IJP Drop modulator
AssigneeRecognition Equipment Incorporated
InventorRichard D. Herd
Life of this patent
Estimating the term…
Abstract
An adjustable frequency Ink Jet Gun utilizing a variable ink chamber and replaceable orifice may be used in a wide variety of applications.
Claims6
An adjustable frequency ink jet printer modulator comprising;
- a piezoelectric crystal, a front plate and a rear plate, said crystal, front plate and rear plate forming an ink cavity, and an adjustable plunger extending through said rear plate for varying the size of said ink cavity.
An ink jet modulator comprising;
- enclosing means including a piezoelectric crystal providing an ink cavity, replaceable nozzle means forming a part of said enclosing means, and a threaded adjustable means at one end of said cavity providing means for changing the size and frequency response of said ink cavity.
Dependencies are inferred from the claim text.