Two-component dry-type developer

A two component dry developer for developing an electrostatic latent image, comprising a blend of toner particles and carrier particles, said toner particles being deposited on the surfaces of said carrier particles so as to cover 30% to 90% of the total surface of said carrier particles;

• said carrier particles consisting essentially of core particles having diameters in the range of 20 to 1000 .mu.m selected from the group consisting of particles of sand, cobalt, iron, iron oxide, ferrite, copper, nickel, zinc, aluminum, brass and glass, said core particles being coated with a silicone resin having repeating units of the formula:
• ##STR16## wherein X, Y and Z, each independently represent hydrogen, halogen, hydroxy, methoxy, alkyl having 1-4 carbon atoms, or phenyl, not more than about 30 wt.% of said silicone resin being unhardened;
• and said toner particles consist essentially of a synthetic resin selected from the group consisting of polystyrene, acrylic, polyvinyl chloride, epoxy, alkyd, polyethylene, phenolic, butyral, polyester, xylene and polyamide resins, and 0.1 to 15 wt.%, based on the amount of said resin, of a dye of the formula:
• ##STR17## wherein X, Y and Z independently represent hydrogen, carboxy, hydroxy, nitro, sulfo or sulfonamide, and A.sup.+ represents H.sup.+, NH.sub.4.sup.30, K.sup.+, Na.sup.+ or an aliphatic ammonium cation.