you mean for home etching?
i've not used AD10, but with the version i'm on you just have to click file - export - final drawings
That gives you ~10 pages of stuff.
Somewhere in there is options were you can customise what is displayed on each page, eg copper only for etching.
You can also enable showing the holes or not and if you want the image mirrored.
Be sure to check what mirror/non-mirror option you need, since the iron on process inverts the image. Also note that the bottom layer is being viewed from the top in altium so is already inverted.
There is also some other option page in in there somewhere which gives you printing options. one of them is scale and you can set it to 1:1
I think one of the option screens you get from a button and the other you get from rightclicking.
But as i say, i use an earily version and i dont have altium infront of me at present.