| 摘要 |
PROBLEM TO BE SOLVED: To provide a poor liquid delivery detecting apparatus, which can accurately detect poor delivery of droplets with neither bringing the complication of a device nor bringing high cost, and an inkjet recording apparatus equipped with it. SOLUTION: Poor liquid delivery is detected from light received data, which are obtained with a light receiving element 15A such as a photodiode or the like by receiving scattered light developed through the collision of a light beam with the droplets such as the ink droplets or the like under the condition that a light emitting element of semiconductor laser is arranged so as to direct the light beam LB emitted from the light emitting element towards a direction intersecting with the delivering direction of the droplets. In this poor liquid delivery detecting apparatus, the light receiving element 15A is arranged adjoining to the direction of the minor beam axis of the light beam LB having an elliptical cross-sectional form emitting from the light emitting element. COPYRIGHT: (C)2009,JPO&INPIT
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