Automatic ink refill system for disposable ink jet cartridges

Details Automatic ink refill system for disposable ink jet cartridges Automatic ink refill system for disposable ink jet cartridges

1994-04-22

1994-11-22

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

347 85, B41J 2175

Patent

active

053673280

ABSTRACT:
An ink refill system is provided for an ink jet printer having a print carriage that traverses across a print medium and is adapted to receive one or more ink jet cartridges. The ink refill system includes a disposable ink jet cartridge removably mountable in the print carriage and constructed as a self-contained unit that includes a print head and an ink supply container that stores a first quantity of liquid ink at a given subatmospheric pressure hydrodynamic condition. An ink reservoir external to the print carriage stores a second quantity of ink for replenishing the first quantity of ink in the ink supply container. Flexible supply tubing couples the ink reservoir to the ink supply container to supply ink from the second quantity of ink to the first quantity of ink during operation of the ink jet printer as the print carriage traverses across the print medium. A mechanism for refilling the ink supply container of the ink jet cartridge from the external ink reservoir during operation of the ink jet printer as the print carriage traverses across the print medium operates such that the refilling of the ink supply container is accomplished in a manner that preserves the negative pressure hydrodynamic condition of the ink jet cartridge.

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