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US 5,394,177 AGranted
Four inch fluid system
AssigneeScitex Digital Printing, Inc.
InventorsJames D. McCann, Russell L. Bartley, Randy D. Vandagriff, Randal L. Mullins
Life of this patent
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Abstract
A fluid system is usable with a four inch print head of a continuous ink jet printer. The fluid system controls all critical ink jet functions. The fluid functions electronically feedback-controlled by the fluid system include pressure control at the print head. The fluid system also controls ink temperature during startup and ink concentration. Finally, the fluid system controls vacuum level.
Claims8
A fluid system for a four inch print head of a continuous ink jet printer having an ink pump, comprising:
- a. means for controlling pressure at the print head;
- b. ink concentration sensor means;
- c. a vacuum control means for measuring a vacuum level of the fluid system;
- and
- d. ink temperature control means.
2 more elements
Dependencies are inferred from the claim text.