I have already looked at this question, and whilst some of the answers might suit my case, I thought I should put this to the community, as my situation is slightly different.
I printed out some schematics onto 210gsm paper (our printer is a HP Laserjet P2035). The ink and toner has struggled to take to the paper. Now as I have been working on cutting out these shapes, the original ink is rubbing off to some extent and it is creating smudges on the reverse of the paper, either from my matt cutter or my hands (much like newspaper print).
So of course the question is which is the best method to attempt to remove these smudges.
Photos of front and reverse for referece:
Sorry I should add I was slightly wary about adding a solution to the paper for fear of buckling it (acetone for example).