Ink droplet projecting device and an ink jet printer

Details Ink droplet projecting device and an ink jet printer Ink droplet projecting device and an ink jet printer

1981-06-10

1983-04-12

Griffin, Donald A.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1518

Patent

active

043800181

ABSTRACT:
An on-demand type ink jet printer, and an ink droplet projecting device used in this printer are disclosed. This device operates in the following way: a piezo-electric element transmits the pressure generated by its vibration first to the pressure transmitting medium of a non-solid matter; through this medium, the pressure is transmitted to the passive vibrating means being in contact with the ink to be projected, and facing the orifice through which ink is projected, thereby vibrating this vibrating means, and by the pressure generated by the vibration, ink is projected through the orifice. With such a structure, the assembling work of this device is easy; uniform projection characteristics are achieved, and moreover, the problem of air suction with resultant projection failure is eliminated.

REFERENCES:
patent: 3940773 (1976-02-01), Mizoguchi et al.
patent: 4229751 (1980-10-01), Tamai
patent: 4303927 (1981-12-01), Tsao

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