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(11) | EP 0 629 511 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Recording material |
(57) A recording material contains both a microcapsule containing an electron-donating
color former dissolved in a solvent and an electron-accepting developer. The solvent
comprises a glyceride and the electron-donating color former comprises a fluoran compound
of the formula :
in which R1 represents an alkyl group of 1 to 4 carbon atoms, R2 represents a branched alkyl group of 4 to 12 carbon atoms or a tetrahydrofurfuryl group, and each of R3 and R4 represents independently a hydrogen atom, a halogen atom or a methyl group, provided that R1 differs from R2. |