| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a dry binary developer capable of obtaining sharp images high in resolution even in the case of executing a large number of running operations without deteriorating image qualities as compared with those obtained in initial times. SOLUTION: The dry binary developer comprising at least a toner and a carrier is characterized by having a specific electric conductivity of 2×10-8-500×10-8 S/m measured at 23 deg.C and a relative humidity of 50% in an electric field intensity of 5×105 V/m.</p> |
