EP 0631868 B1 19961009 - Device for stretching and registering printing plates on cylinders of printing machines
Title (en)
Device for stretching and registering printing plates on cylinders of printing machines
Title (de)
Vorrichtung zum passgenauen Spannen von Druckplatten auf dem Plattenzylinder von Druckmaschinen
Title (fr)
Dispositif pour tendre en repérage des plaques d'impression sur les cylindres de machines d'impression
Publication
Application
Priority
DE 4321751 A 19930630
Abstract (en)
[origin: US5452659A] A mechanism is provided for adjusting printing plates on plate cylinders in sheet-fed offset printing machines. After the leading and trailing edges of the printing plate have been clamped onto the plate cylinder by clamping bars or attachment devices, the adjusting mechanism is utilized to provide circumferential and axial translation of the printing plate relative to the plate cylinder for registration correction. The adjusting mechanism selectively translates only those attachment devices clamping the edge of the printing plate which require this correction. In the preferred embodiment, the adjusting mechanism is a hand tool with a shank having a handle at one end and a cam at the other. Upon placing the tool at predetermined locations on the plate cylinder and turning the handle, the cam acts on the engagement surfaces of the attachment devices which are pivotable about their longitudinal axis causing circumferential translation of the printing plate. Additionally, the tool can be placed at predetermined locations at the ends of the attachment devices whereby turning of the handle results in axial translation of the attachment devices and the printing plate edge clamped therein.
IPC 1-7
IPC 8 full level
B41F 27/12 (2006.01)
CPC (source: EP US)
B41F 27/1218 (2013.01 - EP US); B41F 27/1243 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI
DOCDB simple family (publication)
US 5452659 A 19950926; AT E143865 T1 19961015; DE 4321751 C1 19941124; DE 59400808 D1 19961114; EP 0631868 A1 19950104; EP 0631868 B1 19961009; JP 2644449 B2 19970825; JP H0725000 A 19950127
DOCDB simple family (application)
US 26539594 A 19940624; AT 94108401 T 19940601; DE 4321751 A 19930630; DE 59400808 T 19940601; EP 94108401 A 19940601; JP 14788894 A 19940629