| 摘要 |
An ink composition comprised of (1) a thiourea with a melting point of from about 60 to about 120 C. and with an acoustic-loss value of from about 25 to about 80 dB/mm, (2) an optional ink carbamate with a melting point of from about 25 C. to about 60 C. and with an acoustic-loss value of from about 5 to about 40 dB/mm, (3) a lightfastness component, (4) a lightfast antioxidant, and (5) a colorant
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