Determining method for determining whether ink was ejected...

Details Determining method for determining whether ink was ejected... Determining method for determining whether ink was ejected...

2006-06-27

2006-06-27

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C358S504000, C400S074000

Reexamination Certificate

active

07066568

ABSTRACT:
A determining method and the like is achieved for determining more accurately whether or not ink has been ejected. A determining method for determining whether or not ink was ejected from a plurality of nozzles includes a step of printing a non-ejection print pattern, a step of obtaining an output value upon non-ejection that is output based on the light that has been emitted toward the non-ejection print pattern, a step of printing an all-ejection print pattern, a step of obtaining an output value upon ejection that is output based on the light emitted toward the all-ejection print pattern, a step of setting a threshold value between the output value upon non-ejection and the output value upon ejection, and a step of comparing the threshold value with an output value that is output from a light-receiving section based on the light that has been emitted toward the print patterns.

REFERENCES:
patent: 6478401 (2002-11-01), King et al.
patent: 6832825 (2004-12-01), Nishikori et al.
patent: 10-337937 (1998-12-01), None

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