Tomb of Dracula, Vol. 1 #42 (1976)

A Final Battle Waged
Doctor Sun has been tormenting Dracula for a long time, but the Lord of the Vampires has finally reached a showdown with the computerized menace. With the vampire-hunter Blade as his unlikely ally, Dracula faces only the electronic defenses Doctor Sun has built for himself, his defenders and servants are all elsewhere. Blade falls vicim to a trap, removing him from the fight, but leading him to the knowledge that the vampire that killed his mother has followed him here to Boston. The rest of the vampire hunters, concerned for Blade, rush to assist him only to find Dracula and Doctor Sun locked in their final battle.
Release Date: 1976