Thermal transfer of active ink with dynamic environmental data

A thermal transfer ribbon comprising:

• a carrier layer having a longitudinal axis along the length of the transfer ribbon;
• a release layer disposed on the carrier layer;
• and
• a thermally transferable ink layer disposed on the release layer, the ink layer comprising an active ink having a chemistry that is configured, responsive to the occurrence of an environmental, physical or biological condition, to undergo a chemical or physical state change causing a change in the color state of the active ink,
• wherein the thermally transferable ink layer is applied to the transfer ribbon in a pattern of separate ink regions arranged longitudinally along the transfer ribbon, wherein each ink region in the pattern of ink regions is separated by a respective longitudinal gap from the next ink region, wherein the gap is substantially absent of the active ink.