| 摘要 |
Toners and their use in electrographic color processes are described. The toners are magneta toners containing rhodamine ester dyes as colorants. These ester dyes have a phenyl group in the 9-position which phenyl group contains a non-lactonizing ester substituent. Typical rhodamine ester dyes have the structure: <CHEM> where each of R<1>, R<2>, R<3>, R<4>, R<5> and R<6> is H or an alkyl group, n is from 1 to 18 and X(-) is an anion. Quencher dyes are used in the toners to quench fluorescent radiation that is emitted by the rhodamine dye esters upon excitation by visible light. |
