Printing – Multicolor – Rotary machines
Patent
1989-10-23
1990-06-05
Fisher, J. Reed
Printing
Multicolor
Rotary machines
101230, B41F 502, B41L 1510
Patent
active
049304143
ABSTRACT:
A sheet-fed rotary printing press for performing alternatively single-side multicolor printing or first form and perfector printing with a sheet transfer cylinder disposed in a direction of travel of a sheet between impression cylinders of two printing units, all of the cylinders having grippers associated therewith, comprising a sheet support disposed downstream from the sheet transfer cylinder in the travel direction of the sheet and having a substantially flat upper support surface located substantially tangentially to the sheet transfer cylinder, the sheet transfer cylinder carrying grippers for grippings a trailing edge of the sheet and being rotatable so as to deposit the sheet on the support surface, with a free leading edge thereof first, as the grippers approach the sheet support, the sheet transfer cylinder being further rotatable beyond the sheet support with the grippers maintaining their grip on the trailing edge of the sheet so that the sheet is lifted from the support surface with the trailing edge thereof leading the leading edge thereof.
REFERENCES:
patent: 2931647 (1960-04-01), Papa et al.
patent: 4165689 (1979-08-01), Giuiuzza
patent: 4662277 (1987-05-01), Fischer
patent: 4723489 (1988-02-01), Emrich et al.
Fisher J. Reed
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Lerner Herbert L.
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