Drive device for driving a roller blind device of a frameless vehicle window

(canceled)

A roller device for a frameless vehicle window of a vehicle, comprising a roller curtain which can be wound up and unwound on a winding shaft between a cover position and a release position, wherein a drive device for driving a roller device of a frameless vehicle window, comprises a drive rod with an upper roller end for the fixation to a curtain rod of a roller curtain of the roller device and a lower covering end, wherein the drive rod is movably supported between a cover position and a release position, further comprising a drive drum and an at least partially flexible drive means which is fixed at least to the roller end or to the covering end of the drive rod and at least partially wraps around the drive drum in a force-transmitting manner for transmitting a drive force to the drive rod for a movement of the drive rod between the cover position and the release position during a rotation of the drive drum is provided for driving the roller curtain between the cover position and the release position.