Ink supply device and method for refilling ink in a head of an i

Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means

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B41J 2175

Patent

active

059331720

ABSTRACT:
An ink supply device for an ink-jet printer is disclosed, including a carriage held on a main frame and movable to right and left by a timing belt under the guidance of a carriage shaft; a head installed on the carriage and having a nozzle for spraying ink particles; a home position area where the carriage is moved periodically for cleaning or closing the head in response to a cleaning signal during printing; an ink storage tank installed on one side of the main frame to hold ink; and an ink refill unit rotatable in a counterclockwise direction for opening the ink storage tank to supply ink to the head, and rotatable in a clockwise direction to close the ink storage tank. The ink refill unit includes an ink supply pipe integrally formed under the ink storage tank, the ink supply pipe having an ink supply hole on one side and a closed tip; an elevating lever rotatably attached by a hinge pin to the main frame; an ink refill nozzle attached to the elevating lever, the ink refill nozzle moving downward along the ink supply pipe for opening the ink supply hole when the elevating lever rotates in the counterclockwise direction; a biasing device disposed between the elevating lever and the main frame for biasing the elevating lever in the clockwise direction when the carriage is moved from the home position area for moving the ink refill nozzle upward along the ink supply pipe for closing the ink supply hole.

REFERENCES:
patent: 3882909 (1975-05-01), Ogle
patent: 4739347 (1988-04-01), Ishikawa et al.
patent: 4882597 (1989-11-01), Sugiyama
patent: 5136305 (1992-08-01), Ims
patent: 5469201 (1995-11-01), Erickson et al.
patent: 5596358 (1997-01-01), Hunt et al.
patent: 5598198 (1997-01-01), Taylor et al.

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