Though the term "on demand" usually refers to movies, the publishing world has a version of on demand called POD
technology.
Publish on demand (POD) has really changed the way that the printing world produces books. In fact, there
are hardly any printing houses that use traditional forms or printing technology, and many different presses
now use POD technology instead. Rather than print a large number of books (or other types of publications) it
allows a printing house to produce books as they are needed.
Many years ago, large numbers of books were printed at one time (often result in a large amount of waste).
Today, those printing presses that use POD, only print one book per request. For example, if a press receives
and order to twenty books, those twenty books are printed only after the order has been issued. This type of
printing is also useful due to the fact that a POD press can easily retain digital copies of a text that are
available when they are needed. Many university presses use POD as a way to print small quantities of texts as
they are requested ... and sometimes, a book that has been out of print for awhile can be reproduced using POD
technology.
As far as efficiency goes, book publishing on demand technology has made printing small amounts of text very
easy. Also, most POD presses will charge a publishing house one fixed fee per copy - no matter what the size of
the order actually is. In this manner, the overall cost associated with POD printing is much lower than with
traditional printing. Publishing houses will not have to keep a large amount of texts on hand when they use a
POD company (instead, they can simply ask for copies as they are needed). From a publisher's point of view POD
printing really makes a lot of sense.
Though POD may be a valid printing option, there are also some negative things to consider concerning this
process. Throughout the traditional printing procedure, the entire printing process is carefully monitored and
inspected. When a POD company steps in, the printing is entirely digital, which means that a lack of quality
control can occur. However, for the author that wants to self publish, contacting a POD company may prove to be
inexpensive and useful.
As you can tell, book publishing print on demand technology has really opened up a lot of doors within the
publishing world. As more and more publishing houses (and independent authors) move towards POD technology,
traditional printing methods are slowly becoming a thing of the past ... which may, or may not, be a good
thing.