Patent ID: 8396403

Claim:
A developer station for a printer or copier, comprising: a non-liquid toner source; a non-liquid developer toner roller to which non-liquid toner comprising toner particles and carrier particles is transferred from the toner source; an electrostatic image carrying photoconductor member to which the toner particles are transferred by jumping from the toner roller across a gap provided between the toner roller and the photoconductor member; said toner roller comprising only two circular members, one of which is a single roller-shaped base body having an electrically conductive surface on which is directly arranged, as the other circular member, only one insulation layer; the insulation layer comprising plastic having a sealed outer peripheral surface with no pores and having a layer thickness in a range between 150 μm and 1000 μm; in addition to said plastic the insulation layer also comprising a filler; and the filler comprising electrically conductive additives.