Homebrew PCBs

I was wanting to try silicone paper for resist transfer again.
As i see it the problem i have is that there is not enough toner to cover  
the copper fully.
With the inkjet paper the white residue left behind probably helps with  
covering it.

I thought my old HP IIID made a darker image, but actually it is slightly  
lighter than the lexmark M412 on darkest setting.

So, holding the prints against a light, i can see translucence on all  
traces that have any width (say 1mm).

Now i wonder, is there any model of printer that will print a totally  
opaque image?
I tried printing twice but the registration is severely off.

I'd really like it if i could use silicone paper for resist transfers,  
since it works so great with legend.

Thanks

ST