Methods and apparatus for producing booklets

摘要

A booklet (10) of sheets folded to create a curved spine is fixedly held by clamping jaws (12) adjacent to the spine and a forming roller (18) is passed one or more times along the length of the protruding spine with sufficient pressure to produce a flattening of the curvature of the spine. The deformation of the spine of the booklet means that the sheets lie flat after the treatment. A retractable stop plate (14) defines the amount by which the spine protrudes beyond the jaws (12). <IMAGE>