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Ink composition, printed matter, and thermal transfer recording medium

  • US 5,766,324 A
  • Filed: 12/28/1995
  • Issued: 06/16/1998
  • Est. Priority Date: 12/28/1994
  • Status: Expired due to Fees
First Claim
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1. An ink composition comprising an infrared fluorescent which is excited by infrared light and emits light in an infrared wavelength range and a black colorant which does not absorb light in the infrared wavelength range.

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