Not sure about the copyright thing. Libraries copy papers all the time long before the copyrights expire. Copying to microfiche is a way to backup the book as it were. If you own the book (not the copyright just what you can buy at the bookstore) then you should be able to copy it to microfiche. Microfiche is not a threat to the copyright since it is not easily saleable. You won't be hurting their book sales by have a microfiche copy of the book.

Laminating the microfiche is probably a bad idea. Microfiche is not a printed medium with ink that can rub off it is a photographic medium with the image embedded in the material similar to a slide. Also the image is very high resolution and you need good - extremely good optics to reliably retrieve the information. Woudln't want the distortion that might be introduced by the lamination plastic and adhesive. Wouldn't want to subject the microfiche to the heat of lamination either.