Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2005-03-15
2005-03-15
Vo, Anh T. N. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
Reexamination Certificate
active
06866372
ABSTRACT:
An ink jet printer is disclosed which, only when ink is to be supplied, supplies ink from a main tank disposed outside a carriage and which can effect the supply of ink stably without the leakage of ink. When it is detected by an ink level sensor that the ink level in a second ink chamber of an ink tank has become lower than a predetermined position, pipes in ports are inserted respectively into slit valves provided in the second ink chamber. Then, by operating a pump, the air present in the second ink chamber is discharged by suction to increase a negative pressure in the second ink chamber, allowing ink to be supplied from a main tank into the second ink chamber. Thus, since the supply of ink is performed by a negative pressure, it is possible to prevent the leakage of ink from the portion where the pipe is inserted into the slit valve.
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Imazeki Atsumichi
Isozaki Jun
Namba Yumiko
Oda Kazuyuki
Ogasawara Fumihiko
Fuji 'Xerox Co., Ltd.
Morgan & Lewis & Bockius, LLP
Vo Anh T. N.
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