| 摘要 |
PROBLEM TO BE SOLVED: To provide a photocurable/thermosetting composition that includes titanium oxide and is suitable for drawing a pattern by using an inkjet printer on resin insulation layers, such as a solder resist, formed on a printed wiring board.SOLUTION: A photocurable/thermosetting inkjet composition comprises: a monomer having a (meth)acryloyl group and a glycidyl group in a molecule thereof, and having a viscosity of 10 mPa_s or less at 25°C; a trifunctional or higher acrylate monomer; titanium oxide; a heat-curing catalyst; and a photopolymerization initiator. The ink composition is used to draw the pattern on a resin insulation layer formed on the printed wiring board. |
