EP 0307891 B1 19930113 - PERFORATING CUTTER
Title (en)
PERFORATING CUTTER
Publication
Application
Priority
DE 3731117 A 19870916
Abstract (en)
[origin: JPH01113291A] PURPOSE: To produce signatures forming no crease after folded along an intended fold line by providing many U-shaped perforations where the signatures are alternately placed the other way along or near the fold line. CONSTITUTION: A perforating tool 6 conducts perforation on multilayered signatures 9 so that the signature 9 has many U-shaped perforations 35, 40 and 41 alternately placed the other way along or near the fold line 36. However, because a web 39 does not exist between the bottom cuts 35.1 and 35.2 widely perforated by perforating teeth 24.1 and 26.1, the fold line 36 has a slit-shaped perforation with double length there. Therefore, almost no crease is formed when signature perforated with the perforating tool is folded along the fold line.
IPC 1-7
IPC 8 full level
B27F 7/26 (2006.01); B26F 1/14 (2006.01); B26F 1/18 (2006.01); B26F 1/20 (2006.01); B26F 1/22 (2006.01); B41F 13/54 (2006.01); B42C 5/04 (2006.01); B42D 5/02 (2006.01); B42D 15/00 (2006.01)
CPC (source: EP US)
B26F 1/14 (2013.01 - EP US); B26F 1/18 (2013.01 - EP US); B26F 1/20 (2013.01 - EP US); B26F 1/22 (2013.01 - EP US); B42D 15/00 (2013.01 - EP US); Y10T 83/9314 (2015.04 - EP US); Y10T 428/15 (2015.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0307891 A2 19890322; EP 0307891 A3 19900124; EP 0307891 B1 19930113; DE 3731117 A1 19890330; DE 3731117 C2 19900308; DE 3877473 D1 19930225; JP H01113291 A 19890501; JP H0712755 B2 19950215; SU 1669392 A3 19910807; US 4951967 A 19900828
DOCDB simple family (application)
EP 88115034 A 19880914; DE 3731117 A 19870916; DE 3877473 T 19880914; JP 22672188 A 19880912; SU 4356393 A 19880913; US 24372288 A 19880913