Ink-jet printing apparatus and method for test printing using in

Details Ink-jet printing apparatus and method for test printing using in Ink-jet printing apparatus and method for test printing using in

1995-08-28

1999-04-27

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

347101, 358504, B41J 2205

Patent

active

058984437

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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patent: 5189521 (1993-02-01), Ohtsuba et al.
patent: 5530462 (1996-06-01), Takahashi et al.

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