System and method for inline cutting and stacking of sheets for formation of books

US8882099B2 · kind B2 · utility

Assignee

• Lasermax Roll Systems, Inc. · US

Inventors

• Steven P. Lewalski · Melrose, US
• Hans Eliasson · Ljungby, SE
• Bruce J. Taylor · Manchester, US
• Richard A. Sjostedt · Ashland, US
• Sean Stewart · Watertown, US
• Edward J. Zanchi · Upton, US

Key dates

• Filing date: Oct 24, 2011
• Grant date: Nov 11, 2014
• Expiry date: Jul 14, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2801/15
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

This invention provides a system and method for aligning, feeding, trimming, slitting, rotating, cross-slitting and stacking sheets, each containing one or more discrete page images thereon that allows for greater automation of the overall process so that reduced or no manual intervention is required to generate completed book stacks or “blocks” from a stream or stack of printed sheets. Sheets are fed to a first, upstream trimming station to remove margin edges and optionally separate the sheets relative to the discrete page images. The sheets are then rotated 90 degrees and fed to a second, downstream trimming station that trims the right-angle edges and optionally separates the sheets into a final group of full-bleed pages, removing margins and gutter strips. The sheets are fed to a stacking assembly to be tacked in page order and any rejected, defective sheets or stacks are removed from the order.