Ink delivery system for an ink-jet pen

Details Ink delivery system for an ink-jet pen Ink delivery system for an ink-jet pen

1991-01-03

1992-10-06

Fuller, Benjamin R.

Recorders

Markers and/or driving means therefor

With ink supply to marker

B41J 2175

Patent

active

051536129

ABSTRACT:
A flexible reservoir bladder is connected to the base of a pen body to define a reservoir volume that permits nearly all of the ink contained therein to be delivered from the pen by a print head. The back pressure developed within the reservoir volume is regulated by the resilient properties of the bladder and an orifice that permits controlled entry of air into the volume as the ink is depleted. The system is able to withstand severe environmental effects, such as a drop in ambient air pressure, while preventing pen leakage.

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