Fold line creating device for book cover with opposed rollers and bars having groove to take up protrusion of opposing tool part

摘要

Pair of fold creating tools (70), formed as rollers (80) and fold creating opposing bars (60) are positioned lateral to each other. Bars have grooves (66) and protrusions (67) and opposing fold creating tools have fold creating protrusions (72) and fold creating grooves (74). Grooves of tool take up protrusions of bar and vice verse when book cover is positioned between them, to form fold lines along book cover. Pair of fold creating tools (70), formed as rollers (80) and fold creating opposing bars (60) are positioned lateral to each other. Bars have groove (66) and protrusion (67) and opposing fold creating tools have fold creating protrusions (72) and fold creating grooves (74). Grooves of tool take up protrusions of bar and vice verse when book cover is positioned between them, to form fold lines along book cover. Independent claims for procedure to prepare book cover and system to create book.