The business record 1 wherein said {HEAD ~ initially colorless coatings} comprise self contained coatings of color formers and {TAIL ~ color developers} in which either said color formers or said color developers are contained in pressure rupturable microcapsules 
The business record 1 wherein said { HEAD ~ initially colorless coatings } comprise self contained coatings of color formers and { TAIL ~ color developers } in which either said color formers or said color developers are contained in pressure rupturable microcapsules
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