Paper sheet having a hinge adjacent to its spine edge, a plurality of the sheets being bound into a book whereby the sheets lay flat when the book opened

摘要

A method for binding a plurality of paper sheets to form a book, grooves being formed in both surfaces of each sheet adjacent the sheet spine. The sheets lay flat when the book is opened.

主权项

1. A method for making a book comprised of a plurality of paper sheets, each sheet having a first and second surface and a spine comprising the steps of:
forming a groove on said first and second sheet surfaces near the sheet spine; and binding said sheets together to form said book, each sheet, when opened, laying substantially flat upon adjacent sheets.