Ink jet recording apparatus

Details Ink jet recording apparatus Ink jet recording apparatus

2006-10-31

2006-10-31

Tran, Huan (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07128390

ABSTRACT:
A suction recovery method of an ink jet recording apparatus which can realize a suction operation, in which suction recovery performance can be improved without enlarging a size of apparatus and a number of discharge ports can be held in a good state, is provided. When a negative pressure is generated in a cap which closes discharge ports of a recording head and ink is sucked from the discharge ports, the ink is sucked by a first suction step of sucking at a first, relatively low target negative pressure, which is sufficient to allow the ink which is not suitable for recording to flow from the discharge ports, and a second suction step of sucking at a second, relatively high target negative pressure necessary for sucking bubbles in the discharge ports (particularly, near the discharge ports).

REFERENCES:
patent: 4359744 (1982-11-01), Salmre
patent: 5389961 (1995-02-01), Takagi
patent: 6631973 (2003-10-01), Edamura
patent: 6641247 (2003-11-01), Ide et al.
patent: 2001-63102 (2001-03-01), None

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