Ink cartridge with pressures-controlling module
First Claim
1. An ink cartridge with a pressure-controlling module, the ink cartridge comprising:
- an ink reservoir in which ink is stored;
a printhead through which ink from the ink reservoir is ejected onto a printing medium in a droplet shape; and
a pressure-controlling module which is placed in the ink reservoir, by which the ink reservoir is maintained at a predetermined range of negative pressure, and in which a buffer volume to accommodate a rapid volume expansion of the ink reservoir is prepared, the pressure-controlling module comprising;
a body having one opened side to communicate with the ink reservoir, a guide plate placed vertically in the body and moves horizontally according to the pressure variations of the ink reservoir such that the ink reservoir is maintained at a predetermined range of negative pressure, a flexible wall through which the guide plate and the opened side of the body are connected to be sealed and which forms a variable wall depending on the movement of the guide plate, a spring which connects the guide plate to a side of the body facing the opened side, and a vent hole to communicate a space, which is separate from the ink reservoir by the flexible wall, with ambient air.
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Accused Products
Abstract
An ink cartridge with a pressure-controlling module. The ink cartridge includes an ink reservoir in which ink is stored, a printhead through which ink from the ink reservoir is ejected onto a printing medium in a droplet shape, and a pressure-controlling module which is placed in the ink reservoir, by which the ink reservoir is maintained at a predetermined range of negative pressure, and in which a buffer volume to accommodate a rapid volume expansion of the ink reservoir is prepared. The pressure-controlling module includes a body having one opened side, which communicates with the ink reservoir, a guide plate which is placed vertically in the body and moves horizontally according to the pressure variations of the ink reservoir such that the ink reservoir is maintained at a predetermined range of negative pressure, a flexible wall through which the guide plate and the opened side are connected to be sealed and which forms a variable wall depending on the movement of the guide plate, a spring which connects the guide plate to a side facing the opened side, and a vent hole to communicate a space, which is separate form the ink reservoir by the flexible wall, with ambient air.
179 Citations
26 Claims
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1. An ink cartridge with a pressure-controlling module, the ink cartridge comprising:
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an ink reservoir in which ink is stored;
a printhead through which ink from the ink reservoir is ejected onto a printing medium in a droplet shape; and
a pressure-controlling module which is placed in the ink reservoir, by which the ink reservoir is maintained at a predetermined range of negative pressure, and in which a buffer volume to accommodate a rapid volume expansion of the ink reservoir is prepared, the pressure-controlling module comprising;
a body having one opened side to communicate with the ink reservoir, a guide plate placed vertically in the body and moves horizontally according to the pressure variations of the ink reservoir such that the ink reservoir is maintained at a predetermined range of negative pressure, a flexible wall through which the guide plate and the opened side of the body are connected to be sealed and which forms a variable wall depending on the movement of the guide plate, a spring which connects the guide plate to a side of the body facing the opened side, and a vent hole to communicate a space, which is separate from the ink reservoir by the flexible wall, with ambient air. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A color ink cartridge with a pressure-controlling module which comprises a plurality of ink reservoirs each of which is filled with a predetermined color of ink, each ink reservoir comprising:
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a printhead through which ink of the ink reservoir is ejected onto a printing medium in a droplet shape; and
a pressure-controlling module for each ink reservoir which is placed in the ink reservoir, by which the ink reservoir is maintained at a predetermined range of negative pressure, and in which a buffer volume to accommodate a rapid volume expansion of the ink reservoir is prepared, each pressure-controlling module comprising;
a body having one opened side to communicate with the ink reservoir, a guide plate placed vertically in the body and moves horizontally according to the pressure variations of the ink reservoir such that the ink reservoir is maintained at a predetermined range of negative pressure, a flexible wall through which the guide plate and the opened side of the body are connected to be sealed and which forms a variable wall depending on the movement of the guide plate, a spring which connects the guide plate to a side of the body facing the opened side, and a vent hole to communicate a space, which is separate from the ink reservoir by the flexible wall, with ambient air. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification