Ink circulation system for continuous ink jet printing apparatus

Details Ink circulation system for continuous ink jet printing apparatus Ink circulation system for continuous ink jet printing apparatus

1985-04-12

1986-09-30

Goldberg, E. A.

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Record receiver deforming

346140R, G01D 1518

Patent

active

046149481

ABSTRACT:
In a continuous ink jet printing apparatus, an ink circulating system allows maintenance of the ink supply reservoir at approximately atmospheric pressure while providing for positive withdrawal of ink from the catcher and/or print head outlet of the apparatus. The system is operable with a single pump. To achieve such positive withdrawal of ink, elements are provided in a bypass line extending from the supply pump outlet to the atmospheric region of the ink reservoir or in the passage from that region of the ink reservoir to the pump intake line, for generating a region(s) of sub-atmospheric pressure, and such region(s) are coupled to the catcher and/or print head outlet.

REFERENCES:
patent: 4122457 (1978-10-01), Erikson et al.
patent: 4320407 (1982-03-01), Goldis et al.
patent: 4340896 (1982-07-01), Cruz-Uribe et al.
patent: 4399446 (1983-08-01), McCann et al.
patent: 4413267 (1983-11-01), Hein
patent: 4460904 (1984-07-01), Oszczakiewicz et al.
patent: 4494124 (1985-01-01), Piatt et al.

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