Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2005-08-09
2005-08-09
Nguyen, Lamson (Department: 2853)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
C222S481500
Reexamination Certificate
active
06926398
ABSTRACT:
There is provided a liquid-feeding device with large liquid-capacity and a simplified structure and capable of stably holding liquid without leakage. An ink-feeding device includes an ink reservoir; an ink chamber; a valve displaced so that a closing member opens an open region by reduction in pressure due to reduction in the ink amount in the ink chamber; a fresh-air communicating hole for communicating with fresh air; and an air inlet tube capable of bringing air, when an amount of ink in the ink chamber is reduced, from the fresh-air communicating hole by the amount of air corresponding to the amount of the reduced ink, wherein a bore diameter of the lower end of the air inlet tube and a water head are determined so that the ink meniscus holding power P at the lower end of the air inlet tube and the water head pressure H corresponding to the height from the bottom surface of an ink ejection unit (nozzle surface) to the lower end of the air inlet tube satisfy the relationship P>H.
REFERENCES:
patent: 5796419 (1998-08-01), Clark et al.
patent: 5801737 (1998-09-01), Sato et al.
patent: 5821965 (1998-10-01), Oda et al.
Ando Makoto
Namekawa Takumi
Depke Robert J.
Mouttet Blaise
Nguyen Lamson
Sony Corporation
Trexler, Bushnell, Giangiorgi, Blackstone & Marr
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