 Due to the commercial failure of _Sleeping Beauty (1959)_ (qv),  production costs needed to be cut. As a result, this was the first  Disney feature film to use photocopying technology (Xerography),  which made an animated film with this much visual complexity  possible. It also set the visual style of Disney animation (a  scratchy, hard outline look) for years until the technology advanced  enough (with the production of _Rescuers, The (1977)_ (qv)) to allow  a softer look.