Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1988-09-02
1990-05-29
Hartary, Joseph W.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346140R, G01D 1516, B41J 304
Patent
active
049299638
ABSTRACT:
Ink is flowed through an ink flow channel of an inkjet print head, in a volume far greater than the volume required for printing purposes. The excess ink cools the print head and also aids in purging bubbles from the head. Ink for printing is extracted from the flow channel by capillary channels and conveyed to the ejection mechanism of the print head. In operation, ink from a stationary reservoir is circulated by a low-pressure pump through a particle filter and gas separator, and to the print head by a low-pressure trailing tube system, with the excess ink returned to the reservoir. The pressure of the ink at the capillary is maintained below atmospheric pressure, preferably utilizing hydraulic pressure created by locating the vented ink reservoir at a level below the print head. Leakage of ink from the print head is thereby prevented, and a positive ejection force is required.
REFERENCES:
patent: 3761953 (1973-09-01), Helgeson
patent: 4184169 (1980-01-01), Taylor
patent: 4317124 (1982-02-01), Shirato
patent: 4340896 (1982-07-01), Cruz-Uribe
patent: 4380770 (1983-04-01), Maruyama
patent: 4462037 (1984-07-01), Banos
patent: 4568953 (1986-02-01), Aoki
patent: 4658272 (1987-04-01), Toganoh
patent: 4750005 (1988-06-01), Platt et al.
Hartary Joseph W.
Hewlett--Packard Company
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