Low voltage ink-jet printhead

Details Low voltage ink-jet printhead Low voltage ink-jet printhead

1982-06-30

1985-02-26

Golddberg, E. A.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1518

Patent

active

045020582

ABSTRACT:
An ink-jet printer comprises a piezoelectric element, a pressurization chamber coupled to the piezoelectric element for containing ink therein, and a nozzle communicating with the pressurization chamber, the piezoelectric element being deformable upon application of a drive voltage V to change the volume of the pressurization chamber for ejecting ink from the nozzle. The vibratory system including the piezoelectric element has an acoustic capacitance Co selected with respect to the flow passage system including said nozzle, said pressurization chamber and an ink supply passage, so as to minimize the drive voltage V. Drive voltage is related to the capacitance Co, electrical capacitance cp of the piezoelectric element and pressure .psi. as follows: ##EQU1## K is a constant.

REFERENCES:
patent: 4333087 (1982-06-01), Yamaguti
patent: 4353078 (1982-10-01), Lee et al.
patent: 4364067 (1982-12-01), Koto et al.
patent: 4443807 (1984-04-01), Koto
`Design of an Impulse Ink Jet,` Kyser et al., Journal of Applied Photographic Fn 6'6, vol. 7, #3, 6181.
The Piezoelectric Capillary Injector--A New Hydrodynamic Method For Dot Pattern Generation, IEEEE Transactions on Electron Devices, vol. ed. 20, No. 1, Jan. 1973.
Model For Fluid Ejection and Refill in an Impulse Drive Jet, Society of Photographic Scientists and Engineers 1977.

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