Patent ID: 7144676

Claim:
An imaging composition comprising one or more sensitizers chosen from xanthene compounds in sufficient amounts to affect a color or shade change in the imaging composition upon application of energy at powers of 5 mW or less, one or more oxidizing agents, one or more polymers having a T g from −60° C. to 80° C., and one or more amphoteric surfactants having an isoelectric point of pH 3 to pH 8, the xanthene compounds have the following formula: where X is hydrogen, sodium ion, or potassium ion; Y is hydrogen, sodium ion, potassium ion or —C 2 H 5 ; R 1 is hydrogen, Cl − , Br − , or I − ; R 2 is hydrogen, Cl − , Br − , or I − ; R 3 is hydrogen, Cl − , Br − , I − , or —NO 2 ; R 4 is hydrogen, —NO 2 , Cl − , Br − , or I − ; R 5 is hydrogen, Cl − or Br − ; R 6 is hydrogen, Cl − , or Br − ; R 6 is hydrogen, Cl − , or Br − ; R 7 is hydrogen, Cl − , or Br − ; and R 8 is hydrogen, Cl − , or Br − .