Method and apparatus for refilling a print cartridge having a re

Details Method and apparatus for refilling a print cartridge having a re Method and apparatus for refilling a print cartridge having a re

1994-10-31

1997-01-21

Le, N.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

055963587

ABSTRACT:
Apparatus and method for refilling print cartridges for computer controlled printers. The apparatus creates a closed system that is isolated from ambient pressure. The apparatus utilizes both a vacuum in the ink reservoir in the print cartridge and vertical displacement of the refill reservoir with respect to the reservoir in the print cartridge to draw refill ink into the print cartridge to an operating level and to an operating pressure of less than ambient pressure. Within this closed system the apparatus dislodges the closure on the print cartridge and reseats a replacement closure during refilling.

REFERENCES:
patent: 4750532 (1988-06-01), Grothoff
patent: 4967207 (1990-10-01), Ruder
patent: 5119115 (1992-06-01), Buat et al.
patent: 5400573 (1995-03-01), Crystal et al.

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