Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1976-08-12
1977-06-28
Miller, Jr., George H.
Recorders
Markers and/or driving means therefor
With ink supply to marker
346 75, 291564R, G01D 1518, B23P 1500
Patent
active
040329283
ABSTRACT:
A modulator for ink jet printers is provided for operation over a wide bandwidth of high frequency drop rates. The longitudinal dimensions of each part of the modulator are made small compared to the wavelength of the shortest standing longitudinal acoustic wave that may be produced in a structure of the same material as the part in question. A piezoelectric crystal is seated within a mount acoustically decoupled at the edges therof. An electrode is axially aligned with the crystal and placed in contact with the crystal. A short hollow cylinder forms an ink chamber axially aligned with the crystal. The end of the ink chamber opposite the crystal is closed by a front plate having a nozzle axially located therein.
Plural nozzles may be utilized to produce parallel ink streams which break into droplets at substantially the same time and at a near uniform distance from the nozzles.
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patent: 3747120 (1973-07-01), Stemme
patent: 3848118 (1974-11-01), Rittberg
patent: 3852773 (1974-12-01), Sicking et al.
patent: 3871004 (1975-03-01), Rittberg
patent: 3900162 (1975-08-01), Titus et al.
patent: 3940773 (1976-02-01), Mizoguchi et al.
patent: 3958255 (1976-05-01), Chion et al.
Lee, H. C. et al; High-Speed Droplet Generator, IBM Tech. Disclosure Bulletin, vol. 15, No. 3, August 1972, p. 909.
Lovelady Kenneth T.
White John T.
Miller Jr. George H.
Recognition Equipment Incorporated
Vandigriff John E.
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