There's no legal precedent for this. See https://news.ycombinator.com/item?id=43356042
> the effect of the use upon the potential market for or value of the copyrighted work
A copyright holder's lawyer would argue that having and using a photocopy of a book keeps the original from wearing out. This directly affects the potential market for the work, since the owner could resell the book in mint condition, after reading and burning their photocopies.
> You would get laughed at by the legal system trying to prosecute an individual owner for copying a book they bought just to keep.
I mean maybe this is true. But the affected individual will have a very bad year and spend a ton of money on lawyers.