Method for judging discharge state of ink jet recording...

Details Method for judging discharge state of ink jet recording... Method for judging discharge state of ink jet recording...

B - Operations, Transporting

41

J

B41J 2/175 (2006.01) B41J 2/05 (2006.01)

Patent

CA 2095313

The temperature characteristics of an ink jet recording head are detected, and the result of detection is utilized for detecting the ink discharge state. Also a statistical processing on the temperature characteristics detected on plural recording heads enables exact detection of the ink discharge state, not effected by the individual difference of the recording heads. Also there is detected the abnormality in ink discharge, that may occur prior to the exhaustion of ink in the ink tank.

Les caractéristiques thermiques d'une tête d'enregistrement à jet d'encre sont détectées, et les résultats ainsi obtenus sont utilisés pour déterminer les conditions de débit d'encre. En outre, le dépouillement statistique des caractéristiques thermiques d'une pluralité de têtes d'enregistrement permet de déterminer avec exactitude les conditions de débit d'encre, indépendamment des différences individuelles. Le système permet également de détecter les conditions de débit anormal pouvant survenir avant l'épuisement du réservoir d'encre.

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