Description: 503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor / 503 record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor/(200) having a colorless color-former, developer therefor, or method of use (218) identified color-former (220) furanone moiety-containing (221) fluoran or derivative (222) molecule having plural fluorans or more than three rings fused together
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