Ink-on-demand type ink-jet printer

Details Ink-on-demand type ink-jet printer Ink-on-demand type ink-jet printer

1981-02-17

1983-09-06

Miller, Jr., George H.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346140R, G01D 1518

Patent

active

044032234

ABSTRACT:
A demand ink-jet printer uses droplets of conductive ink for recording on a recording medium. In greater detail, an ink chamber, filled with conductive ink, has a nozzle in one wall and a piezoelectric member attached to another wall. Droplets of ink are driven out the nozzle in response to a driving pulse applied to the piezoelectric member. The energy content of the driving pulses controls both the size of the droplets and the potential of a charging voltage applied to the droplets. This way, the combined charge and size may be held constant so that large or small drops may be generated to produce half-tone pictures and the droplets may be electrostatically deflected accurately, despite the variance in droplet size.

REFERENCES:
patent: 3747120 (1973-07-01), Stemme
patent: 3846800 (1974-11-01), Chen
patent: 4050077 (1977-09-01), Yamada et al.
patent: 4222060 (1980-09-01), Sato et al.

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