Amazon (NYSE:AMZN) is expanding its books-on-demand business, selecting HP (Nasdaq:HPQ) to provide printing presses to meet its growing demand.

HP announced on Monday that its Indigo line of digital presses have been installed at Amazon fulfillment centers and are now producing full-color books on demand as well as color covers for black and white books.

Now, through this collaboration, consumers will benefit from the integration of HP's digital print technology and Amazon's unmatched ability to offer the broadest selection of books possible, said Vyomesh Joshi, an executive vice president at HP.

The books-on-demand market is expected to grow from approximately 20 billion book pages in 2006 to approximately 38 billion book pages by 2009, according to data from Interquest.

Hewlett-Packard shares rose 33 cents, or 0.89 percent, to $39.77 in Monday trading on the New York Stock Exchange. Meanwhile, shares of Amazon rose 5 cents, or 0.13 percent, to $39.46 in afternoon trading on the Nasdaq exchange.

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