Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1986-04-17
1988-01-12
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
With ink supply to marker
2391022, 310323, 310328, 310334, G01D 1516
Patent
active
047194766
ABSTRACT:
Provision is made for selectively addressing inividual crests of traveling or standing capillary surface waves to eject droplets from the selected crests on command. To that end, the addressing mechanism of this invention locally increase the surface pressure acting on the selected crests and/or locally reduce the surface tension of the liquid within the selected crests. The preferred addressing mechanisms have sufficient spatial resolution to address a single crest substantially independently of its neighbors.
Discrete addressing mechanisms having a plurality of individual addressing elements are especially attractive for liquid ink printing and similar applications, not only because their individual addressing elements may be spatially fixed, but also because the spatial frequency of their addressing elements may be matched to the spatial frequency of the capillary wave. Such frequency matching enables selected crests of the capillary wave to be addressed in parallel, such as for line printing. Preferably, the capillary wave for a printer is a spatially stabilized standing wave, so that the crests and troughs of the capillary wave are locked in predetermined spatial locations.
REFERENCES:
patent: 3211088 (1965-10-01), Naiman
patent: 4275290 (1981-06-01), Cielo
patent: 4308547 (1981-12-01), Lovelady et al.
Greanias, E. C.; Hydraulic-Electrostatic Printer, IBM TDB, vol. 13, No. 5, Oct. 1970, pp. 1131-1312.
W. Eisenmenger, "Surface Tension of Water," Acustica, 1959, vol. 9, pp. 327-340.
Boucher, et al., "The Fundamentals of the Ultrasonic Alomization of Medicated Solutions," Annals of Allergy, Nov. 1968, vol. 26, pp. 591-600.
Kenneth E. Bean, "Anisotropic Etching of Silicon," IEEE, vol. ED-25, No. 10, Oct. 1978.
Elrod Scott A.
Khuri-Yakub Butrus T.
Quate Calvin F.
Hartary Joseph W.
Xerox Corporation
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