Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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backer ( backing machine )

A hand- or power-operated machine used for BACKING books. The backer stems from the days when a book was rounded by hand and then placed in the backer to quickly form the shoulders for the boards. Today, in both edition and library binding, the most common method is to round and back books in two consecutive operations in a ROUNDING AND BACKING MACHINE . Unusually large books, which will not fit in a machine, are generally backed by hand or in a hand-operated backer. See also: JOB BACKER . (256 , 264 )

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