| abstract |
The object of the present invention is to provide a light source that is curable by ultraviolet rays, especially ultraviolet rays using light-emitting diodes (LEDs) as a light source, has good adhesion to polyvinyl chloride sheets, etc., and has good flexibility of ink coating films. A curable ink composition for inkjet printing. As a solution, there is provided a photocurable ink composition for inkjet printing, which contains a photopolymerizable component and a photopolymerization initiator, and is characterized in that it contains 70 to 100% by mass of A monofunctional monomer, the monofunctional monomer is composed of (A) a monofunctional monomer whose homopolymer glass transition temperature is above 20°C and (B) a homopolymer whose glass transition temperature is lower than 20°C, And the said (A) of 30-90 mass % and the said (B) of 10-70 mass % are contained with respect to the gross mass of a photopolymerizable component. |