Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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spring channel binder

A mechanical binding used to hold less than 1/2 inch thickness of paper. The back of this type of binder has a spring steel channel, the leaves being held between the sides of the channel by spring pressure. The boards are hinged to the edge of the channel, and, when both are thrown back and pressed together, the channel is forced open for removal or insertion of sheets. It is not necessary to punch or drill the paper for this type of binder. (339 )

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