Leak resistant ink-jet pen

Details Leak resistant ink-jet pen Leak resistant ink-jet pen

1996-03-04

1998-09-22

Lund, Valerie

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

347 92, B41J 2175

Patent

active

058121650

ABSTRACT:
A three-color ink-jet cartridge has a conduit connecting an ink reservoir to a print head orifice. The conduit includes a standpipe which has a pair of internal longitudinal grooves to permit ink to flow past a trapped bubble in the standpipe thereby preventing ink leakage through the orifices when pressure changes cause the trapped bubble to expand. The conduit also includes a tube from the standpipe to the print head. Disposed longitudinally along the tube is a rib which enables capillary flow of ink around a bubble in the tube to prevent depriming of the print head.

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