I remember reading about this topic in the Japan Echo, so I dug up a bit of info with google. There was a special issue of the journal called:
JAPANESE CREATIVITY: ROBOTS AND ANIME
Vol. 30, No. 4, August 2003
There was a bunch of articles about the subject.
Here's an excerpt:
"The tradition of karakuri ningyo (mechanical dolls) dates back to the
Edo period (1600–1868), and it is perhaps the influence of this tradition that has spurred the creation in Japan of humanoid robots unlike any machines found anywhere else in the world. I wonder if there is any other country where robots have become a subject for poetry, or where human and robot workers do calisthenics together. Though the Japanese feeling of affinity for robots may strike some Westerners as strange, and though the appeal of anime may be less than universal, it seems fair to say that in both robotics and animation, the Japanese have been expressing their creativity in ways that non-Japanese can appreciate. "
I remember there was also a discussion about how Western culture tended to view the biological and the mechanical as opposing elements, while Japanese culture saw robots as an extension of a human being, or a tool.
I think you should be able to find the journal in most university libraries. I've seen the Japan Echo in a Japanese embassy before too, but I don't know whether they had back issues.