About the on-demand book and the printer book

The on-demand book is made with the special printer
put on the print shop
by reading the data of the manuscript.
Even if you print it a lot, the unit price is same,
so if the print run is a little, this might be good.
It is possible to issue it only a little
even in the book with a lot of pages.
However, the quality is not good as same as the copier.

The printer book is printed with a domestic printer and made.
Because the unit price is high,
it is good when the number of copies is a little.
However, it is improper to preserve it because it blots.