County prosecutors allege Robinson videotaped himself having sex with the victim sometime between December 2010 and February 2011.
The rape allegations come as Robinson was already in the Shelby County Jail on a charge of possession of a dangerous ordnance.
While executing a search warrant in the ordnance case, authorities found the video evidence of the sexual assault at Robinson’s residence on Orchard Run in Miami Twp., sheriff’s Maj. David Hale said.