Ink jet waste and replenish ink system

Details Ink jet waste and replenish ink system Ink jet waste and replenish ink system

1983-05-09

1985-07-02

Goldberg, E. A.

Recorders

Record receiver deforming

346140R, G01D 1518

Patent

active

045271704

ABSTRACT:
An ink jet printing apparatus is disclosed in which part of ink droplets ejected from a nozzle of an ink ejection head and unused for printing purpose is caught by a gutter and returned to an ink supply source through an ink circulation path to be reused. The ink is partly shunted for disposal while fresh ink is supplied to the ink supply source in proportion to the amount of ink disposal, thereby maintaining the ink viscosity always at a proper value. For the disposal of the ink, a three-way solenoid operated valve is opened periodically for a predetermined period of time or, alternatively, ink droplets ejected from the nozzle are deflected to be caught by a gutter which is independent of the first gutter for routing to disposal means. The amount of disposal is determined by a pressure of ink fed to the nozzle and/or a temperature of ink in the neighborhood of the nozzle.

REFERENCES:
patent: 4336547 (1982-06-01), Matsumoto
patent: 4337468 (1982-06-01), Mizuno
patent: 4346388 (1982-08-01), Wiley
patent: 4434428 (1984-02-01), Horike
patent: 4437104 (1984-03-01), Hudson

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