Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1975-10-22
1976-12-21
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
With ink supply to marker
219302, 219331, 219501, G01D 1518
Patent
active
039991903
ABSTRACT:
An ink jet printer has a printing head which contains at least one cavity with a discharge orifice therein for dispersing droplets of ink onto a medium for printing thereon. Means are disclosed herein for maintaining the temperature of the ink in the cavity at a preselected value prior to dispersement from the discharge orifice. Preferably, the ink is heated by an electrical heating rod mounted in the printing head adjacent to the cavity. Means are also provided for sensing the temperature of the ink in the cavity. The heating rod is selectively energized to maintain the ink at the preselected temperature by means of a feedback control circuit coupled with the sensing means.
REFERENCES:
patent: 3107285 (1963-10-01), Knapp
patent: 3443060 (1969-05-01), Smith
Ruddy, G. A.; Viscosity Control Circuit, IBM Tech. Disc. Bulletin, vol. 16, No. 10, Mar. 1974, p. 3295.
Brown Michael K.
Lundquist David E.
Maidment Earl P.
Shell Ronald G.
Burroughs Corporation
Fissell, Jr. Carl
Hartary Joseph W.
Schivley G. Gregory
Uren Edwin W.
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