Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Patent
1998-12-23
2000-11-28
Lee, N.
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
B41J 2175
Patent
active
06152557&
ABSTRACT:
An electrostatic ink jet recorder of the present invention includes a head for ejecting ink, an ink reservoir storing the ink, and an ink feed pipe and an ink discharge pipe for circulating the ink between the head and the ink reservoir. The head has a first ink chamber communicated to the ink feed pipe, a second ink chamber communicated to the ink discharge pipe, a third ink chamber positioned at a higher level than the first and second ink chambers for ejecting the ink for printing, a siphon pipe communicating the first and third ink chamber and having a suction opening below an ink level in the first ink chamber, and an ink outlet pipe having an outlet opening above an ink level in the second ink chamber for delivering the ink from the third ink chamber to the second ink chamber. Delicate pressure variation in the head ascribable to the movement of the head is reduced in order to maintain pressure inside the third ink chamber for ejection stable.
REFERENCES:
patent: 4380770 (1983-04-01), Maruyama
patent: 4432003 (1984-02-01), Barbero et al.
patent: 5818485 (1998-10-01), Rezanka
Hagiwara Yoshihiro
Minemoto Hitoshi
Mizoguchi Tadashi
Shima Kazuo
Suetsugu Junichi
Lee N.
NEC Corporation
Vo Anh T. N.
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