Patent ID: 6764797
Filing Date: 2004-07-20
Classification: G03G

Abstract:
A toner for MICR comprising at least a binder resin, magnetite particles and a wax, said magnetite particles comprising a mixture of granular magnetite and acicular magnetite,wherein said granular magnetite has residual magnetization of 5-15 emu/g and saturation magnetization of 70-95 emu/g, and said acicular magnetite has residual magnetization of 20-50 emu/g and saturation magnetization of 70-95 emu/g, wherein a ratio by weight of said acicular magnetite to granular magnetite is 0.1-0.5 to 1.0, and wherein said magnetite particles are included in an amount of 15-50% by weight in the toner, and wherein said wax has a melting point measured by DSC of 60-100Â° C.