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Title:
記録装置及びインク吐出不良検出方法
Document Type and Number:
Japanese Patent JP4953703
Kind Code:
B2
Abstract:
A printing apparatus and ink discharge failure detection method capable of precisely detecting temperature information corresponding to each nozzle are provided. Temperatures of respective electrothermal transducers (heaters) are measured on the basis of outputs from a plurality of sensors corresponding to the respective heaters. The temperatures of the heaters at a predetermined timing during a printing operation are predicted on the basis of the temperature change profiles of the respective heaters that are generated by energizing the heaters. A plurality of thresholds corresponding to nozzle states are generated on the basis of the predicted temperatures and the driving conditions of an inkjet printhead, and it is controlled to execute temperature measurement at the predetermined timing. A temperature measured under the control is compared with the respective generated thresholds, and the nozzle state is identified on the basis of the comparison results.

Inventors:
青木 孝綱
高林 広
刈田 誠一郎
林 功夫
Application Number:
JP2006169382A
Publication Date:
June 13, 2012
Filing Date:
June 19, 2006
Export Citation:
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Assignee:
キヤノン株式会社
International Classes:
B41J2/01; B41J2/05; B41J2/175
Domestic Patent References:
JP58118267A
JP6336024A
JP2000343695A
JP7195695A
JP7001745A
JP5309832A
JP7052408A
JP2006027274A
JP2005231175A
JP2005047093A
JP2005138425A
Attorney, Agent or Firm:
大塚 康徳
高柳 司郎
大塚 康弘
木村 秀二