Ink-jet printing apparatus and method for test printing using ink and an ink improving liquid
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United States of America Patent
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Apr 27, 1999
Grant Date -
N/A
app pub date -
Aug 28, 1995
filing date -
Sep 2, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
By ejection from each ejection opening of a liquid ejecting head, predetermined lengths of ruled line patterns are formed in order, and by ejection of an ink from an ink ejecting head, a solid pattern is printed overlaying the ruled line patterns of the liquid. In this case, the portion corresponding to the ejection opening through which the liquid cannot be ejected may be a different printing density in comparison with another portion where the liquid and the ink are overlaid. By this, non-ejection failure at the ejection opening can be detected. Therefore, in an ink-jet printing apparatus employing a head for ejecting the liquid for making a coloring agent in the ink insoluable for enhancing water resistance, the ejection condition of the head can be successfully detected.
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