Flexographic printing plate precursor and manufacturing method of flexographic printing plate

A flexographic printing plate precursor comprising, in the following order:

• a support;
• a photosensitive resin layer;
• and
• an infrared ablation layer,
• wherein the photosensitive resin layer contains a photopolymerization initiator represented by Formula (1) and a photopolymerization initiator represented by Formula (2),
• in Formula (1),
• n represents 1 or 2,
• X1 and X2 each independently represent a hydrogen atom or a substituent other than a group represented by —OR1, and R1 represents a hydrogen atom or a substituent, provided that X1 and X2 may be linked to each other to form a ring, in a case where n is 2, a plurality of X1's may be the same as or different from each other, and a plurality of X2's may be the same as or different from each other, and
• in a case where n is 1, X3 represents a hydrogen atom or a substituent, and in a case where n is 2, X3 represents a single bond or a divalent linking group,
• in Formula (2),
• Y1 and Y2 each independently represent a hydrogen atom or a substituent other than a group represented by —OR1, and R1 represents a hydrogen atom or a substituent, provided that Y1 and Y2 may be linked to each other to form a ring,
• Y3 represents a hydrogen atom or a substituent,
• Y4 and Y5 each independently represent a hydrogen atom or a substituent, provided that Y4 and Y5 may be linked to each other to form a ring.