Method of maintenance for ink jet head and image forming...

Details Method of maintenance for ink jet head and image forming... Method of maintenance for ink jet head and image forming...

2007-08-28

2007-08-28

Vo, Anh T. N. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C347S023000

Reexamination Certificate

active

11038670

ABSTRACT:
Air from a pressurizing pump is supplied to a plurality of ink jet heads through an air tank and a plurality of ink tanks, and head inner pressures of the respective ink jet heads are raised. Accordingly, ink liquids are discharged from the respective ink jet heads. Thereafter, the desired ink tank among the respective ink tanks is allowed to communicate with the air tank. Moreover, the desired ink tank and at least one or more air tanks are opened to the atmosphere. In consequence, pressure in the desired ink tank is averaged.

REFERENCES:
patent: 5485187 (1996-01-01), Okamura et al.
patent: 6168268 (2001-01-01), Sugiyama
patent: 6196668 (2001-03-01), Bode
patent: 6199976 (2001-03-01), Sasada
patent: 6234615 (2001-05-01), Tsukuda
patent: 6281916 (2001-08-01), VanSteenkiste
patent: 6513902 (2003-02-01), Amano et al.
patent: 6840604 (2005-01-01), Kimura et al.
patent: 2002-347260 (2002-12-01), None

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