Original post here.
Sourced to Old Erotic Art.
Bonus Image Provenance: I commissioned Bacchus at ErosBlog to research this image further, and he has come up with the following additional details.
This black-and-white line art of a girl being sexually menaced by a robot is signed “Strom ’07”. “Strom” refers to comic book and erotic artist Frank Strom, whose web page is here and sports a front-page illustratin with that same “Strom ’07” signature:http://www.weirdcrap.com/frankstrom/
He does commissions (or did in 2005). There’s an adult gallery on his site with several tentacle-sex illustrations:
http://www.weirdcrap.com/frankstrom/adult.html
Some more information about his titles is here:
http://www.comicvine.com/frank-strom/4040-45260/
Five more galleries of his work are here:
And another seven here:
http://zizki.com/comics/Frank%20Strom
One of these seven galleries (Dee Dee 7) features in part a many-tentacled sex robot:
http://zizki.com/comics/Frank+Strom/Dee+Dee+7/
The artistic similarities are clear, but it’s not the same robot.
My best guess is that this image is Dr. Who fan art (possibly a one-off for the web or for a commission?) because in various places where it appears, it is tagged “Dr. Who” and “Cyberman” (with Cybermen apparently referring to a robotic species of villain in that long-running TV series). The cybermen shown here have the same face as your robot:
http://tardis.wikia.com/wiki/Cyberman
Your image appears on the “Dr. Who Fakes And Hentai” page:
http://xhamster.com/photos/gallery/1300765/doctor_who_fakes_and_hentai.html
It’s also found here with the Dr. Who and Cyberman tags:
Bacchus is actively taking image research commissions, and if you have adult imagery you’re curious to learn more about, I encourage you to visit Bacchus’s introductory post for his image-searching service, where you can find details about how to commission him.