On-press development type lithographic printing plate precursor, method of preparing lithographic printing plate, lithographic printing method, and compound

An on-press development type lithographic printing plate precursor comprising:

• a support;
• and
• an image-recording layer on the support,
• wherein the image-recording layer comprises an infrared absorber, a polymerization initiator, a polymerizable compound, and one or more compounds selected from the group consisting of a compound represented by Formula (1) and a compound represented by Formula (2):
• wherein in Formula (1) and (2), Ra1 and Ra2 each independently represent a hydrogen atom or a substituted or unsubstituted alkyl group;
• Ra1 and Ra2 may be linked to each other to form a ring structure;
• Rb1 and Rb3 each independently represent a substituted or unsubstituted alkyl group;
• Rb2 and Rb4 each independently represent a hydrogen atom or a substituted or unsubstituted alkyl group;
• and EDG's each independently represent a hydrogen atom or an electron-donating group, provided that at least one of the four EDG's in Formula (1) represents an electron-donating group.