| http://www.w3.org/ns/prov#value | - Due to its rheological properties, such a polymer is especially preferably used in an ink jet recording head utilizing thermal energy, particularly, in an ink jet recording head ejecting minute ink droplets, more specifically, in an amount of 20 pl or less, more specifically within a range of 0.1 to 20 pl, particularly 0.1 to 15 pl and more particularly 0.1 to 10 pl per one ejection operation.
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