Ink jet head utilizing electroviscous fluid for control of ink d

Incremental printing of symbolic information – Ink jet – Ejector mechanism

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347 54, B41J2/485

Patent

active

059032910

ABSTRACT:
An ink jet head includes an electroviscous fluid chamber provided at a part of a sidewall of an ink chamber, and having electroviscous fluid sealed therein, an elastic film provided between the ink chamber and the electroviscous fluid chamber for transmitting pressure between the ink chamber and the electroviscous fluid chamber, a pair of electrodes provided at a part of a sidewall of the electroviscous fluid chamber corresponding to the ink chamber for applying an electric field to the electroviscous fluid, a pressure generation device for discharging ink from the ink chamber, and a control device for controlling ink discharge by applying a voltage to the pair of electrodes to alter the viscosity of the electroviscous fluid in response to record information.

REFERENCES:
patent: 3553708 (1971-01-01), Carreira et al.
patent: 3946398 (1976-03-01), Kyser et al.
patent: 4024544 (1977-05-01), Vernon
patent: 4480259 (1984-10-01), Kruger et al.

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