Diaphragm pump for ink supply

Details Diaphragm pump for ink supply Diaphragm pump for ink supply

1997-04-30

1998-12-29

Riley, Shawn

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

058546464

ABSTRACT:
An ink supply having a diaphragm pump for providing ink to a printhead. The diaphragm pump includes a barrier layer and a chassis defining a variable volume chamber. The chassis has a flange disposed proximate an opening in the chassis. Also included in the diaphragm pump is a crimp cap. The crimp cap is disposed on the chassis with the barrier layer disposed between the crimp cap and the chassis. The crimp cap engages the flange to compress the barrier layer against the chassis to define, at least partially, the variable volume chamber. The barrier layer limits the diffusion of air through the diaphragm into the chamber. An elastomer layer is disposed between the chassis and the vapor barrier layer, limiting passage of liquid within the chamber through the diaphragm.

REFERENCES:
patent: 5252993 (1993-10-01), Tomii et al.
patent: 5259737 (1993-11-01), Kamisuki et al.
patent: 5409134 (1995-04-01), Cowger et al.
patent: 5450112 (1995-09-01), Scheffelin
patent: 5489932 (1996-02-01), Ceschin et al.
patent: 5537134 (1996-07-01), Baldwin et al.
patent: 5721576 (1998-02-01), Barinaga

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