Balanced capillary ink jet pen for ink jet printing systems

Details Balanced capillary ink jet pen for ink jet printing systems Balanced capillary ink jet pen for ink jet printing systems

1987-10-28

1988-12-13

Goldberg, E. A.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 11, G01D 1516, G01D 900

Patent

active

047914386

ABSTRACT:
This application is directed to an ink jet pen having an ink supply housing which includes a primary ink reservoir (30) and a secondary ink reservoir (26). A balancing capillary member is positioned within the ink supply housing and includes ink flow path (20, 24) which extends between the primary ink reservoir (30) and the secondary ink reservoir (26). This capillary member is operative to draw ink from the primary ink reservoir (30) and into or toward the secondary ink reservoir (26) by capillary action as temperature and pressure within the primary ink reservoir increases. Conversely, when temperature and pressure in the housing decreases, ink will be drawn back into or toward the primary ink reservoir (30). In addition, the primary ink reservoir (30) is connected by way of a suitable ink feed path to an ink jet printhead (32) for supplying ink to the printhead during an ink jet printing operation.

REFERENCES:
patent: 4419678 (1983-12-01), Kasugayama
patent: 4436439 (1984-03-01), Koto
patent: 4539568 (1985-09-01), Lewis

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