Plane commutator, method for producing the same and conductor blank and carbon disk for using to produce the same

A flat commutator for an electrical machine, comprising a support body made of an insulating molding compound, a plurality of conductor segments and an equal number of carbon segments, which are disposed at the ends and are connected in electrically conductive relationship to the conductor segments, wherein each of the conductor segments is provided with a thick-walled terminal region disposed on the periphery of the support body, a contact region, which is also thick-walled, disposed between the support body and the associated carbon segment and a thin-walled transition region disposed between the terminal region and the contact region, wherein the uniformly thin-wailed transition regions of the conductor segments are oriented with substantially radial extent relative to the commutator axis and are attached to the contact regions of the conductor segments at some distance from the carbon segments, a molding-compound layer being disposed in each case between the transition regions of the conductor segments on the one hand and the carbon segments on the other hand.