Ink reservoir with essentially constant negative back pressure

Details Ink reservoir with essentially constant negative back pressure Ink reservoir with essentially constant negative back pressure

1982-11-23

1985-04-02

Goldberg, E. A.

Recorders

Markers and/or driving means therefor

With ink supply to marker

400126, G01D 1516

Patent

active

045090629

ABSTRACT:
An ink reservoir which incorporates a negative back pressure source coupled to a membrane wall of the reservoir to prevent ink leakage from a reservoir orifice is disclosed. The back pressure is created by either a linear or nonlinear spring which can be either independent of, or integral with, the membrane. The result is freedom from ink leakage and improved quality printing when the reservoir is used in conjunction with an ink pen such as used in ink jet printing.

REFERENCES:
patent: 2704551 (1955-03-01), Ralston
patent: 4412232 (1983-10-01), Weber
patent: 4422084 (1983-12-01), Saito
Brady Materials Handbook, pp. 643, 644, 686, 9th ed.

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