Patent ID: 8697326
Filing Date: 2014-04-15
Classification: G03G

Abstract:
1. A method of manufacturing a carrier comprising: (a) covering a core material with a covering material to form a covering layer on the core material, the covering material comprising a solvent; and (b) baking the covering material by heating the core material by high frequency induction applied thereto by a high frequency induction heating device, wherein a magnetic field generated by the high frequency induction heating device is generated by flowing a current in a conductive wire having a coil form having a single turn or multiple turns, to heat the core material in (b), and thereby heat the covering layer, wherein the heating of the covering layer causes the solvent to pass through the covering layer in a direction away from the core material, and wherein an electric power E of the high frequency induction heating device per unit of weight of the carrier is represented by the following Relationship 1 and ranges from 0.01 to 2.5 kWh/kg, where W represents electric power per unit of time and M represents a weight of the carrier processed per hour.