A rotary sheet-fed printing press for recto and verso printing has a turning drum disposed between impression cylinders having double the diameter of a conventional blanket cylinder, wherein a sheet gripped at a leading edge thereof by grippers of a first one of the impression cylinders is gripped at...http://www.google.es/patents/US5454312?utm_source=gb-gplus-sharePatente US5454312 - Rotary sheet-fed printing press for recto and verso printing having an impression cylinder double the diameter of a blanket cylinder and serving as a storage drum
Rotary sheet-fed printing press for recto and verso printing having an ...
