Ink jet fluid system

Details Ink jet fluid system Ink jet fluid system

1980-07-23

1982-05-11

Hartary, Joseph W.

Recorders

Record receiver deforming

346140R, G01D 1518

Patent

active

043296963

ABSTRACT:
An ink jet fluid system includes a print head, defining a fluid reservoir, and further including at least one orifice communicating with the reservoir for generating a jet drop stream from the fluid flowing through the orifice. Inlet and outlet valves are connected to inlet and outlet openings of the print head, respectively, and a siphon line extending generally downward is connected to the outlet valve. A float valve, connected between the siphon line and the fluid supply system for the print head, vents the lower end of the siphon line to atmosphere to produce a sub-atmospheric fluid pressure within the print head after shutdown of the printer. The float valve includes a float which prevents air from entering the fluid supply through the valve. The float valve further is arranged so as to prevent ink within the valve from flowing out the vent opening.

REFERENCES:
patent: 3701998 (1972-10-01), Matais
patent: 3761953 (1973-09-01), Helgeson
patent: 3891121 (1975-06-01), Stoneburner
patent: 3929071 (1975-12-01), Cialone
patent: 4042937 (1977-08-01), Perry
patent: 4080607 (1978-03-01), Breeman
patent: 4152710 (1979-05-01), Matsuba
patent: 4240082 (1980-12-01), Yu
Mead Dijit, Dayton Ohio, Drawing Nos. 4004164-0004, 4004229-00x, 4-4177 and 4-4216.

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