FIELD: color-forming compositions and recording material.
SUBSTANCE: claimed composition includes developer containing urea-urethane compound and colorless or light colored leuco dye. Recording material based on this composition also is proposed.
EFFECT: color-forming compositions with improved image conservation ability and increased image intensity.
21 cl, 14 tbl, 153 ex
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Authors
Dates
2005-02-10—Published
2001-03-01—Filed