Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1982-06-30
1985-10-08
Goldberg, E. A.
Recorders
Markers and/or driving means therefor
With ink supply to marker
G01D 1518
Patent
active
045463620
ABSTRACT:
An ink-jet printer head 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 increase the volume of the pressurization chamber, removal of the driving signal restoring the volume and 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.
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patent: 4233610 (1980-11-01), Fischbeck et al.
patent: 4284996 (1981-08-01), Greve
patent: 4353078 (1982-10-01), Lee et al.
patent: 4383264 (1983-05-01), Lewis
Erik Stemme and Stig-Gorn Larsson, "The Piezoelectric Capillary Injector-A Hydrodynamic Method for Dot Pattern Generation", IEEE Transactions on Electron Devices, vol. Ed-20, No. 1, Jan. 1973, pp. 14-19.
J. D. Beasley, "Model for Fluid Ejection and Refill in an Impulse Drive Jet", Society of Photographic Scientists and Engineers, vol. 21, No. 2, Mar./Apr. 1977, pp. 78-82.
Epson Corporation
Goldberg E. A.
Kabushiki Kaisha Suwa Seikosha
Preston Gerald E.
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