If you use a commercial photocopier (for example in a copier shop or a public library) you should assume that the copier will keep copies of everything it copies. These copies will be available to anyone who wants to look at them.
And do remember to remove your original. Leaving documents in a photocopier is commoner than you'd think.
Taken from How To Protect And Preserve Your Freedom, Identity and Privacy by Vernon Coleman (available on Amazon as a paperback and an eBook.)
Copyright Vernon Coleman 2019