Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1988-02-01
1989-07-18
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
With ink supply to marker
417207, G01D 1516
Patent
active
048497746
ABSTRACT:
A bubble jet recording apparatus comprises an inlet for accepting a liquid to be delivered to an outlet orifice through a liquid flow path. Liquid is supplied to the inlet for flow through the liquid flow path to a heating element, which heats liquid in the liquid flow path in response to recording signals. Heating is sufficient to cause a change of state of the liquid (that is, to generate a bubble) and produce a force acting on the liquid which overcomes the surface tension of liquid at the orifice and thereby projects a droplet of liquid from the orifice. The temperature of the heating element is raised at each actuation to a temperature above the maximum temperature at which the liquid is heated so as to promote substantially instantaneous transfer of heat to the liquid proximate to the heating element and to retard the transfer of heat from the heating element to liquid at other locations in the liquid floor path.
REFERENCES:
patent: 4723129 (1988-02-01), Endo
patent: 4740796 (1988-04-01), Endo
Endo Ichiro
Nakagiri Takashi
Ohno Shigeru
Saito Seiji
Sato Yasushi
Canon Kabushiki Kaisha
Hartary Joseph W.
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