| 摘要 |
By using the fluoran compound represented by the following general formula (I); <CHEM> wherein R<1> is alkyl containing 1 to 4 carbon atoms, R<3> is alkyl containing 1 to 8 carbon atoms, R<4> is hydrogen or alkyl containing 1 to 8 carbon atoms, or R<3> and R<4> may bond with each other to form a ring together with a N atom, R<2> is alkyl containing 1 to 4 carbon atoms, and n denotes 0, 1 or 2, however, the substituents represented by R<2> may be different with each other when n is 2, as a color former for color forming recording materials, recording materials which have excellent properties in whiteness of the background of the material under light and in photostability of color-formed images on the materials as well as in sufficient color forming capability of the material even after having exposed them to light, can be provided. |
