| abstract |
A thermally curable resin composition which comprises a cationic dye (A), a cationically polymerizable organic substance (B), and a thermoacid generator (C). It is preferable that the cationic dye (A) be a polymethine compound represented by the following general formula (1). (In the formula, A represents a group selected from among (a) to (m) of group I, A' represents a group selected from among (a') to (m') of group II (for the groups of groups I and II, see the description), Q represents a linking group including a methine chain, An q- represents a q-valent anion, q is 1 or 2, and p represents a coefficient that keeps the charge neutral.) |