Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1983-12-05
1985-07-09
Goldberg, E. A.
Recorders
Markers and/or driving means therefor
With ink supply to marker
346 75, 29592R, G01D 1518, H01S 400
Patent
active
045285799
ABSTRACT:
An ink-jet printer includes a reservoir filled with ink and an ink duct communicating with the reservoir. The duct has a terminal portion with a capillary nozzle for projecting the ink, and an intermediate portion between the reservoir and the terminal portion. Transducer means are associated with the terminal portion of the duct for generating a first pressure wave in the ink, which is directed towards the nozzle and causes a droplet of ink to be discharged through the nozzle. Energy absorption means cooperate with the ink in the intermediate portion of the duct and comprise an elongate container adjacent at least part of the intermediate portion of the duct and having at least one wall which is in contact with the ink and can deform resiliently under the action of a second pressure wave associated with the first pressure wave and directed towards the intermediate portion of the duct. This container has a filling of viscous fluid whereby the energy of the second pressure wave is substantially dissipated within the viscous fluid.
REFERENCES:
patent: 3683212 (1972-08-01), Zoltan
patent: 3832579 (1974-08-01), Arndt
patent: 4354197 (1982-10-01), Reitberger
patent: 4417259 (1983-11-01), Maeda
Goldberg E. A.
Ing. C. Olivetti & C. S.p.A.
Preston Gerald E.
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