| 摘要 |
<p>An electrophotographic printer has neutralizing units (60,70,80) and a fixing unit (36,19) that are disposed in the transport path of a print medium (P). The neutralizing units (60,70,80) neutralize a toner image surface of the print medium (P) entering the fixing unit (36,19) and a non-printed surface of the print medium (P) exiting the fixing unit (36,19). The fixing unit (36,19) includes two rollers. A fixing roller (40,19a) incorporates a heat source that generates heat for fusing a toner image on the print medium. A pressure roller (50,19b) is in pressure engagement with the fixing roller (40,19a) . At least one of the fixing roller (40,19a) and pressure roller (50,19b) includes a resilient member (43,52) that covers a metal shaft (42,51) and an insulation layer (44,53) that covers the resilient member (43,52). The resilient member (43,52) may contain electrically conductive whiskers that extend radially in three dimensions. The whiskers (45,54) are dispersed such that a surface of the insulation layer (44,53) and a surface of the shaft (42,51) are electrically continuous.</p> |
