Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2002-06-20
2004-11-30
Meler, Stephen D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
C347S087000
Reexamination Certificate
active
06824259
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to ink cartridges; and particularly to an ink cartridge of an inkjet printer, wherein ink in the ink box is supplemented from the farmost end so as to avoid that ink in one side is exhausted, while the ink in another side can not supplement to the output port.
DESCRIPTION OF THE RELATED ART
The prior art ink cartridge of an ink-jet printer is illustrated in
FIG. 1
, which is formed by an ink box
1
B and an ink box cover
2
B at the top surface of the ink box
1
B. The interior of the ink box
1
has a receiving chamber
12
for receiving ink. Filling material A is filled in the receiving chamber
12
. A bottom of the ink box
1
B has an output port. A plurality of air channels are formed at the top end of the ink box cover
2
B. The air channels
26
are exactly communicated to the liquid filling hole
27
. The liquid filling hole
27
is at the same side of the output port
13
. When the ink flows out from the output port
13
, since the liquid filling hole
27
is at the same side of the output port
13
, the air flow only flows at the side of the output port
13
of the ink box. Thereby, the ink can not be supplemented to another end in the ink box
1
B quickly. Thus, the ink can not flow out easily (since one side has a large flow, while the supplement speed is slow), even ink in one side of the ink box
1
B is exhausted, while the ink at another side can not supply to this side successfully.
SUMMARY OF THE INVENTION
To achieve above objects, the present invention provides an ink cartridge of an ink-jet printer comprising an ink box, and an ink box cover connected to the ink box. The ink box has at least one receiving chamber for receiving filling material; and a bottom of each receiving chamber being communicated to an output port; a lower edge of the output port is adhered with a plug having a via hole and a draining preventing film for preventing ink from flowing out.
The ink box and an ink box cover are melted-connected through vibration and friction. A top of the ink box cover is installed with a liquid filling hole, and an air inlet. The liquid filling hole is at the same side of the output port of the ink box and the air inlet is at an opposite side of the output port of the ink box. A part of the liquid filling hole is protruded from an inner surface of the ink box cover have notches. Thereby, air may flow through the notches. Upper sides of the liquid filling hole and the air inlet are covered by a film layer by thermally melting. A tearing track is formed on the film between the liquid filling hole and the air inlet. A plurality of posts are installed in the ink box cover. Thereby, after the ink box is melted-connected to the ink box cover, the posts extrudes the filling material therein so as to form an air flow path.
When the ink is absorbed from the output port, the ink in the air inlet will be absorbed to the output port in advance and then flows out from the output port so that the ink in the air inlet flows to the output end successfully and thus. The ink in the ink box is supplemented from a farmost end so as to avoid that when ink in one side of the ink box is exhausted, the ink in another side can not supplement to the output port.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.
REFERENCES:
patent: 6302534 (2001-10-01), Tsukahara et al.
patent: 6454399 (2002-09-01), Ujita et al.
patent: 6490792 (2002-12-01), Ishinaga et al.
Meler Stephen D.
Tran Ly T
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