The first high quality movie since Sleeping Beauty?
I'm talking about the visual impression, at least in USA, even if there is nothing negative to say about the story of Nimh, which was one of my favore animated movies when I grew up.
In the 60's and 70's the animation had declined even at Disney. Lasseter himself said that in the early 80's, he felt 101 Dalmatians represented the peak of animation technology and storytelling at that point, and something new had to be done, or else Disney would be finished. The Xerox trademarks were still very visible, and the movies themselves were relatively cheap.
With Nimh, Don Bluth did hand inking where possible, more colored toner in the Xerox lines, better cleanups, airbrush cels when needed and technological tools like a multiplane camera, backlight animation and other old techniques that the other studios seemed to have given up. The result was a movie that had a feeling of the old quality from animation's golden age.
From what the biography on imdb says, a major reason for leaving Disney was that he worked on Sleeping Beauty, and seeing how far the studio had fallen since then, he felt he had to do something himself to save American animation.
Is there any animated movies that looks better than Nimh which were made between 1960 and 1982? If so, there can't be too many of them.