Anti-dispersion accumulator for ink jet printing system

Details Anti-dispersion accumulator for ink jet printing system Anti-dispersion accumulator for ink jet printing system

1978-03-24

1979-07-10

Hartary, Joseph W.

Recorders

Record receiver deforming

346140R, G01D 1516

Patent

active

041609824

ABSTRACT:
An ink jet printing system includes an ink ejection head for providing ink drops which are selectively charged and deflected in accordance with their charge as they traverse a path toward a recording medium. An accumulator or "dump" is positioned, in the operating mode of the system, adjacent to the recording medium to catch ink drops directed away from the medium. Before the printing is started, the charging and deflecting units are displaced from the ink path, and the accumulator is abutting the ejection head, effectively capturing any ink emanating from the head. When the system has been pressurized and is in all respects ready for operation, the accumulator is displaced away from the ejection head and along the normal path of the ink drops, thus "catching" all the drops until it reaches its normal operating position adjacent the medium. The charging and deflecting units are then moved into their normal operating positions. In the process of shut-down, the deflection and charging means are moved away from the ink path, and the accumulator is then retracted from its operating position adjacent the medium, again traversing the path of the ink drops and catching all the drops, until it again abuts the ejection head.

REFERENCES:
patent: 3839721 (1974-10-01), Chen
patent: 3945020 (1976-03-01), Kraus
patent: 4081804 (1978-03-01), Van Breemen

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