Droplet deposition apparatus

Details Droplet deposition apparatus Droplet deposition apparatus

1988-01-11

1989-07-04

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

417 99, G01D 1516

Patent

active

048455172

ABSTRACT:
An ink jet"drop-on-demand" printer has a number of parallel channels each containing ink. A thread of mercury extends longitudinally of each channel or pair of channels and is connected for electrical current flow. A magnetic field is applied orthogonally to the channel plane such that current flow in a selected channel causes electromagnetic deformation of the mercury thread. This leads to a pressure pulse in the ink causing ejection of an ink droplet. With a mercury thread shared between a pair of channels, current in the opposite sense results in droplet ejection from the opposite channel of the pair.

REFERENCES:
patent: 1881724 (1932-10-01), Lehrer
patent: 2434705 (1948-01-01), Lago
patent: 3582954 (1971-06-01), Skala
patent: 3747120 (1973-07-01), Stemme
patent: 4023180 (1977-05-01), Zenner
Tsao, C. S.; Drop-On-Demand Ink Jet Nozzle Array with Two Nozzles/Piezoelectric Crystal; IBM, TDB, V23, N10, Mar. 1981, p. 4438.
Ng, C. S.; Electromagnetic Ink Jet Print Head; IBM, TDB, V26, N3A, Aug. 1983, p. 1040.
Lenneman et al.; Mercury Controlled Ink Jet; IBM TDB, V18, N7, Dec. 1975, p. 2195.

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