An ink jet recording apparatus having: a recording head of ink jet type for jetting ink from a plurality of jet openings; a light source for emitting light to cure an ink jetted from the recording head and adhered to a recording medium; a light quantity measuring section for measuring a light quantity of the light source; and a control section for controlling the light quantity of the light source according to a measured value by the light quantity measuring section.

 
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> Alloy type semiconductor nanocrystals and method for preparing the same

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