Quote Originally Posted by fotophox View Post
So how do you wash away rem-jet backing? What, for that matter, IS rem-jet backing?
Rem-jet is a certain back layer serving as well as antistatic as well as a an anti-halation layer. It is formed of carbon particles in a binder dissolving in weak alkali.


See for the designation itself:

http://www.apug.org/forums/forum40/55220-rem-jet.html