Within an injector housing, a nozzle needle comprising a nozzle needle shaft is accommodated in a first guide boring in a longitudinally displaceable manner. The heat sink includes a conductive path having metal or other thermal conductor having a high thermal conductivity. Accordingly, the heat generated on the object can be efficiently cooled. A time-based series of reduced usage states may be defined such that reserved bandwidth is gradually released if the reserved bandwidth is not actually used for a period of time. The method can be extended to enable three or more write pointers for even higher frequency operation. The first distance is greater than the second distance.