Ink-jet printing apparatus and printing method using ink improvi

Details Ink-jet printing apparatus and printing method using ink improvi Ink-jet printing apparatus and printing method using ink improvi

1997-09-02

2000-12-26

Grimley, Arthur T.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

347101, B41J 201

Patent

active

06164773&

ABSTRACT:
A printing apparatus has an ink-jet printing head having one nozzle array for ejecting an ink, and the other nozzle array for ejecting a printing improvement liquid containing a substance making a coloring agent in the ink insoluble or coagulate. When the printing improvement liquid is ejected in advance of ejection of the ink, the ejection speed of the ink is set to be lower than the ejection speed of the printing improvement liquid. When the ink is ejected in advance of ejection of the printing improvement liquid, the ejection speed of the printing improvement liquid is set to be lower than the ejection speed of the ink. The printing apparatus is capable of preventing ejection failure or deflection of the ejecting direction due to rebounding of the printing improvement liquid or mist thereof.

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