EP 0151386 B1 19890405 - IMPRESSION CYLINDER FOR A SHEET-FED OFFSET-TYPE ROTARY
Title (en)
IMPRESSION CYLINDER FOR A SHEET-FED OFFSET-TYPE ROTARY
Publication
Application
Priority
DE 3403893 A 19840204
Abstract (en)
[origin: US4598641A] To reliably hold a sheet in a rotary sheet-fed offset printing machine, a plurality of pin or needle-like projections (11), preferably held on a holding strip (12), are located transversely just behind or beneath the grippers. The sheet is pressed against the pins by the rubber blanket of the blanket cylinder, to impale the sheet on the pins; or, if the projections are located beneath the grippers, the grippers indirectly apply pressure on the sheet to impale the sheet on the projections. In another embodiment (FIG. 6), a pressure block (13) with a resilient engagement surface (14) presses the grippers on the sheet for also impaling the sheet on the pins or needles. The projections may also be formed as knife edges (FIG. 4). Alternatively, the printing line can be shifted forwardly (FIG. 5), so that the rubber blanket will engage the ends of the grippers.
IPC 1-7
IPC 8 full level
B41F 21/05 (2006.01); B41F 13/18 (2006.01); B41F 21/10 (2006.01)
CPC (source: EP US)
B41F 13/18 (2013.01 - EP US); B41F 21/10 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0151386 A2 19850814; EP 0151386 A3 19870429; EP 0151386 B1 19890405; DE 3403893 A1 19850814; DE 3403893 C2 19870430; DE 3569220 D1 19890511; JP S60180844 A 19850914; US 4598641 A 19860708
DOCDB simple family (application)
EP 85100086 A 19850104; DE 3403893 A 19840204; DE 3569220 T 19850104; JP 1880985 A 19850204; US 69773585 A 19850204