Photocurable inkjet printing ink composition

A photocurable inkjet printing ink composition containing a photopolymerizable compound and a photopolymerization initiator, wherein in 100 percent by mass of the photocurable inkjet printing ink composition, included are:

• a. an acrylamide-based monomer by 22.0 to 50 percent by mass, which is expressed by General Formula (I) below:
• CH2═CR4-CON(R5)R6
• wherein R4 represents a hydrogen atom or a methyl group;
• R5 and R6 may be the same or different, and although they are each a hydrogen atom or a substituted or an unsubstituted alkyl group with the carbon number from 1 to 8, they are not a hydrogen atom at the same time;
• and alternatively, R5 and R6 may be bonded to form a ring together with an adjacent nitrogen atom;
• b. a monofunctional monomer other than acrylamide-based monomer by 15 to 70 percent by mass;
• c. a polymerizable compound having two or more functionalities by 5.0 to 20.0 percent by mass;
• d. an acrylated amine compound having two photopolymerizable functional groups and two amino groups in the molecule by more than 0 percent by mass but no more than 10 percent by mass;
• and
• e. the percentage of monofunctional monomers in the photopolymerizable compound is 60 to 99.5 percent by mass.