well - it doesn't look like a photogravure to me.. rather the photo polymer gravure, (semantics?) which is a danish invention () from about 1989...
So it is still a very young technique.
HIGHLY addictive!! it is SO much fun, and the possibillities are greater than you might expect.
The only thing that makes me not do this all the time, is the cost of the polymer plates....
it is not so difficult - you can get a printable plate in ca 1 hour, and it is toxic free..
A finn, Kari Holopainen, has a great description on the process..
(But you can do this with far less sophisticated maschinery..)
Attached, an example of photo polymer gravure..