PROBLEM TO BE SOLVED: To provide a radiation ray-curable inkjet composition, a composition storage body stored with the radiation ray-curable inkjet composition, and an inkjet method using the radiation ray-curable inkjet composition.SOLUTION: Provided is a ray-curable inkjet composition comprising a two or more functional acyl phosphine oxide based photoinitiator and a polymerizable compound, and in which the dissolution oxygen amount of the composition is 0 to 8.0 kPa, and stored in a composition storage body.
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