Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1976-05-03
1977-06-21
Miller, Jr., George H.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346 75, G01D 1518
Patent
active
040315614
ABSTRACT:
A jet drop recording head of laminar construction is started up by moving the charge plate thereof into contact or near contact with the orifice plate prior to introduction of recording liquid into the head. After this position is achieved, a flush fluid is pumped into the head, and this pumping is continued as the head fills and fluid pushes through the orifice plate and charge plate to form free standing jets. Once the jets are formed the flush fluid is replaced by recording liquid, and the charge plate is moved away from the orifice plate to a normal operating position. Prior to such separation the lower surface of the charge plate is cleared of collected flush fluid by blowing a stream of air thereacross or by tilting the entire head to enable runoff. A non-wettable coating on the lower surface of the charge plate facilitates such clearing of collected flush fluid.
REFERENCES:
patent: 3346869 (1967-10-01), Stone
patent: 3647138 (1972-03-01), Houser
patent: 3661304 (1972-05-01), Martinez et al.
patent: 3805273 (1974-04-01), Brady et al.
patent: 3839721 (1974-10-01), Chen et al.
patent: 3891121 (1975-06-01), Stoneburner
patent: 3970222 (1976-07-01), Duffield
Miller Jr. George H.
The Mead Corporation
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