The first surface of the web includes on selected portions thereof means for forming areas of at least a plurality of different colors comprising {HEAD ~ coatings} of initially colorless color formers and color developers, which, when exposed to heat from a thermal printer, combine to form {TAIL ~ colored visible areas} 
combine to form
The first surface of the web includes on selected portions thereof means for forming areas of at least a plurality of different colors comprising { HEAD ~ coatings } of initially colorless color formers and color developers , which , when exposed to heat from a thermal printer , combine to form { TAIL ~ colored visible areas }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL