A publishing company that offers publication services for a fee paid by the author, and holds the copyright to the book, but does not generally promote or market the book. Bookstores often refuse to carry books published by subsidy/vanity presses, and such books are rarely reviewed.
Companies specializing in creating books up to the printing stage, at which point a publishing company takes over handling the book. Although publishers most often contract directly with freelance authors and use their own staffs to prepare books for publication, publishers sometimes take on books prepared by packagers. The packager’s name may appear on the copyright page, but the publisher is always identified on the spine.