Liquid ejection apparatus

Details Liquid ejection apparatus Liquid ejection apparatus

2011-03-15

2011-03-15

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

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

07905585

ABSTRACT:
A liquid ejection apparatus includes a liquid ejection head that ejects a liquid and a switching device. The switching device includes a first ON-OFF valve that selectively opens and closes a first supply passage at a position upstream from the joining point, and a second ON-OFF valve that selectively opens and closes a second supply passage at a position upstream from the joining point. When the first ON-OFF valve is open and the second ON-OFF valve is closed, the liquid guide portion divides the first liquid into a first liquid flow proceeding from the first supply passage directly to the head supply passage and a second liquid flow flowing from the first supply passage into the head supply passage after passing the vicinity of the second ON-OFF valve in the second supply passage. When the first ON-OFF valve is closed and the second ON-OFF valve is open, the liquid guide portion divides the second liquid into a third liquid flow proceeding from the second supply passage directly to the head supply passage and a fourth liquid flow flowing from the second supply passage into the head supply passage after passing the vicinity of the first ON-OFF valve in the first supply passage.

REFERENCES:
patent: 6206511 (2001-03-01), Cook et al.
patent: 6786578 (2004-09-01), Aschman et al.
patent: 7281785 (2007-10-01), Palifka et al.
patent: 7699451 (2010-04-01), Nishida
patent: 2001-187458 (2001-07-01), None
patent: 2003-344643 (2003-12-01), None
patent: 2006-175626 (2006-07-01), None

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