Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2002-01-29
2003-04-22
Nghiem, Michael (Department: 2863)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
Reexamination Certificate
active
06550900
ABSTRACT:
BACKGROUND OF INVENTION
1. Field of the Invention
The present invention relates to an ink container and more specifically to an ink container with an elastic deformation device.
2. Description of the Prior Art
Please refer to FIG.
1
.
FIG. 1
is a diagram of a prior art ink container
10
with an ink adjusting room
15
.
FIG. 1
is disclosed in U.S. Pat. No. 5,764,259. An ink container
10
comprises an ink reservoir
12
for storing ink, a negative regulating chamber
5
being connected to external air, and a buffer chamber
15
being connected to the external air and the ink reservoir
12
. The negative regulating chamber
5
absorbs the external air through an air vent
8
. A slab
18
set above the negative regulating chamber
5
is used to change a volume of the negative regulating chamber
5
by a weight of the slab
18
, so that pressure within the ink reservoir
12
is adjusted. Furthermore, when the negative regulating chamber
5
expands to a maximum such that the negative regulating chamber
5
can not be used to change volume to adjust the pressure within the ink reservoir
12
, the external air flows into the ink reservoir
12
through an air vent
16
and a connecting vent
25
to decrease the pressure within the ink reservoir
12
.
When ink within the ink reservoir
12
stops flowing out of the ink container
10
through an ink outlet
21
, pressure outside the ink container
10
decreases, the negative regulating chamber
5
is pressed, and ink within the ink reservoir
12
is allowed to flow into the buffer chamber
15
through the connecting vent
25
, so that the ink within the ink reservoir
12
can not unexpectedly flow out of the ink outlet
21
because of the low external air.
Nevertheless, the buffer chamber
15
and the connecting vent
25
are set below a water line. If the connecting vent
25
is too big in a manufacturing process, ink of the ink reservoir
12
is allowed to flow into the buffer chamber
15
, when filled with water, then flow out of the ink container
10
through the air vent
16
.
SUMMARY OF INVENTION
It is therefore a primary objective of the present invention to provide an ink container with an elastic deformation device set above an ink reservoir for avoiding ink within the ink reservoir flowing out of the ink container.
The present invention discloses an ink container with an elastic deformation device. The ink container includes an ink reservoir for storing ink, a cover set above the ink reservoir for forming an ink adjusting room with a top portion of the ink reservoir, an ink outlet for providing ink within the ink reservoir, and an elastic deformation device set within the ink reservoir. The elastic deformation device is connected to the gap of the ink reservoir to accept external air into the elastic deformation device. When the pressure within the ink reservoir is lower than a pressure of external air, the external air flowing into the elastic deformation device of the ink container causes the elastic deformation device to expand. When the pressure within the ink reservoir is higher than the pressure of the external air, the elastic deformation device shrinks to have an outwardly overlapping wall with a folding shape in order to balance the pressure of the external air with the pressure of the ink reservoir.
It is an advantage of the present invention that the ink container utilizes the elastic deformation device with a self-elasticity to adjust the pressure within the ink container. Furthermore, the ink adjusting room of the ink container is set on a top portion of the ink reservoir, so that when ink flows into the ink adjusting room, an air vent does not allow the ink to flow out of the ink container.
These and other objectives and advantages of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.
REFERENCES:
patent: 5270739 (1993-12-01), Kitani et al.
patent: 5719609 (1998-02-01), Huack et al.
patent: 5764259 (1998-06-01), Nakajima et al.
patent: 5801737 (1998-09-01), Sato et al.
patent: 5877794 (1999-03-01), Takagi
patent: 6019459 (2000-02-01), Pew et al.
patent: 2002/0057318 (2002-05-01), Shyn et al.
patent: 2002/0067398 (2002-06-01), Shyn et al.
patent: 2002/0071013 (2002-06-01), Hsu et al.
patent: 2002/0122083 (2002-09-01), Hsu et al.
patent: 62-5994 (1987-01-01), None
patent: 373595 (1999-11-01), None
Chan Hsun-Hsien
Chen Chih-Ching
BenO Corporation
Hsu Winston
Nghiem Michael
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