Ink-jet head back-up device and ink-jet printer

Details Ink-jet head back-up device and ink-jet printer Ink-jet head back-up device and ink-jet printer

1997-09-04

1999-12-28

Braun, Fred L.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2165

Patent

active

060071796

ABSTRACT:
A pump absorbs ink from nozzles of an ink-jet head by increasing an internal space of the pump and discharges the ink by decreasing the internal space. A valve has an absorbing path formed therein and a discharging groove formed thereon, and passes through a wall of the pump. A communicating unit communicates with a first end of the absorbing path of the valve and causes the nozzles of the ink-jet head to communicate with the internal space of the pump through the absorbing path. When the pump absorbs ink from the nozzles of the ink-jet head, the valve moves through the wall of the pump so that a second end of the absorbing path is exposed to the internal space of the pump, and the pump increases the internal space. When the pump discharges ink, the valve moves through the wall of the pump so that the second end of the absorbing path is opened externally and the discharging groove is aligned with the wall of the pump, and the pump decreases the internal space.

REFERENCES:
patent: 5648803 (1997-07-01), Koyama et al.
patent: 5883645 (1999-03-01), Ikado et al.
patent: 5917515 (1999-06-01), Nonoyama et al.

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