FANAL PIGMENT FOR CYCLIZED DRY TONER CONTAINING INDAMINE AND DIPHENYL METHANE DYE

A dry toner for developing latent electrostatic images in electrostatic copying and printing processes contains, as charge-control substance, a pigment of the formula I in which A- represents a silicomolybdate anion, R1 and R3 represent, independently of each other, hydrogen, alkyl or aralkyl, R2 and R4 represent, independently of each other, hydrogen, alkyl, aralkyl or aryl, or R1, R2, R3 and R4 represent, independently of each other, members of a five- or six-membered ring produced by linkage with the o-position of the benzene ring or R1 and R2 or R3 and R4 jointly represent members of a five- or six-membered ring, B represents oxygen, sulphur or N-R, R represents hydrogen, alkyl or aryl and D represents CH, C-CN or N, in which the two benzene rings may be fused with a further benzene ring and then NR3R4 may also be replaced by hydrogen, and in which the cyclic and acyclic radicals and the benzene rings may be substituted by nonionic radicals usual in dyestuff chemistry.