Patent ID: 6685416
Filing Date: 2004-02-03
Classification: B42C,B65H

Abstract:
A bookbinding device comprising:a page supply unit for supplying a stack of pages to be bound to a predetermined first station, said page stack being kept in a clamped condition from opposite sides thereof; a thickness sensor for detecting thickness of the clamped page stack during supply thereof by said page supply unit; an adhesive applicator for applying molten adhesive to a back surface of said page stack at said first station; a page conveyor unit for conveying said page stack with said glued back surface from said first station to a second station remote from said first station; a cover supply unit for supplying a cover sheet to beneath said glued back surface of said page stack at said second station; a press unit for contacting under pressure said glued back surface of said page stack with a center portion of said cover sheet for adhesive binding therebetween; and a cover folding unit for folding said cover sheet substantially along opposite side edges of said page stack to form a unitary assembled booklet; said cover supply unit including: a trimmer for trimming a side edge portion of said cover sheet depending upon thickness of said page stack detected by said thickness sensor, and a positioning unit for positioning said cover sheet such that a center line of said cover sheet which has been trimmed by said trimmer is aligned with a center of thickness of said page stack at said second position.