| 摘要 |
A method for coating carrier particles for use in electrostatic developers is provided comprising the steps of : bringing the carrier particles to be coated in a vessel equipped with means for agitating the carrier particles, so that the carrier particles occupy less than 85 % by volume of the vessel, and the agitation of the carrier particles is described by a Froude number between 0.2 and 20, adding a solution containing between 6 and 60 % by weight with respect to the total volume of the solution of chemical compounds for coating the carrier particles in a solvent with a boiling point of A DEG C to the vessel at such a rate that, at any time, the solvent is present in an amount lower than 1.25 10<-4> ml per cm<2> of surface of the carrier particles to be coated , keeping the carrier particles in the vessel at a temperature of at most (A + 10) DEG C, and continuously evacuating the solvent. c
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