Ejection abnormality detection method, and liquid ejection device

摘要

A liquid is ejected which has a volume exceeding a volume for forming a dot of a maximum size used in regular liquid ejection to output a high load pattern, an ejection abnormality detection pattern is output for detecting an ejection element abnormality within a specific period of time from outputting the high load pattern, read data of the output ejection abnormality detection pattern is acquired, and the acquired read data is analyzed to detect an abnormal ejection element.

主权项

1. An ejection abnormality detection method, comprising:
a high load pattern outputting step of ejecting a liquid which has a volume exceeding a volume for forming a dot of a maximum size used in regular liquid ejection to output a high load pattern; an ejection abnormality detection pattern outputting step of outputting an ejection abnormality detection pattern for detecting an ejection element abnormality within a specific period of time from outputting the high load pattern in the high load pattern outputting step; a read data acquiring step of acquiring read data of the ejection abnormality detection pattern output in the ejection abnormality detection pattern outputting step; and an analyzing step of analyzing the read data acquired in the read data acquiring step to detect an abnormal ejection element.