abstract |
The present invention provides a developing agent for a heat-sensitive recording paper represented by the following formula (1). [Chemical Formula 1] Wherein Y is or ego, m, n, o, p, q, r, s and t are each independently an integer of from 1 to 4, and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 are each independently hydrogen, a methyl group or an ethyl group. |