A developer unit having a toner reservoir and a toner application device.
The toner application device applies toner to a developer and the
developer can be brought into a planar contact with an OPC (photo
conductor drum). In order to improve the transfer of toner in the contact
area between the OPC and the developer, the developer has a developer
strip that is placed, in the contact area, in some areas of the surface
of the OPC.