| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an active energy ray curable ink composition which can be cured simply and in a low energy irradiation. <P>SOLUTION: There is provided a method for producing a photopolymerization initiator composition including one or more photopolymerization initiators (A) having an absorption coefficient at a wavelength of 365 nm in a methanol solution of <4.5×10<SP POS="POST">2</SP>[ml/g-cm], and two or more photopolymerization initiators (B) having an absorption coefficient of≥4.5×10<SP POS="POST">2</SP>[ml/g-cm], wherein the content of the photopolymerization initiators (A) is 5 to 40 mass%, and the content of the photopolymerization initiators (B) is 60 to 95 mass%. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
