Selective ink-jet printing device

Details Selective ink-jet printing device Selective ink-jet printing device

1982-06-28

1985-02-26

Pellinen, A. D.

Recorders

Record receiver deforming

346140R, G01D 1518

Patent

active

045020540

ABSTRACT:
The device comprises a printing head (15) constituted by an insulating container (19) with a capillary nozzle (36). The electrically conductive ink is kept under circulation in the container via a feed tube (26, 23) and a return tube (27, 24) leading to a suction pump, in order to allow the formation of a convex meniscus at the exit aperture of the nozzle (36) and eliminate any vapor bubbles. A pulse generator creates a voltage of a predetermined value and duration between an electrode (37) external to the nozzle and an electrode (23) in contact with the ink, in order to create a state of excitation of the meniscus and partial vaporization of a layer of ink, such as to expel a plurality of ink particles. The head is mounted on a carriage movable transversely to the paper, which advances at each stroke reversal of the head.

REFERENCES:
patent: 2978088 (1961-04-01), Pearson et al.
patent: 3705043 (1972-12-01), Zabiac
patent: 3974508 (1976-08-01), Blumenthal
patent: 4333086 (1982-06-01), Ebi
patent: 4343012 (1982-08-01), Knapp
patent: 4359744 (1982-11-01), Salmre
patent: 4364054 (1982-12-01), Kelly
patent: 4403234 (1983-09-01), Miura et al.
patent: 4432003 (1984-02-01), Barbero et al.
European Search Report EP 82 30 3265.

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