Vacuum Transportvorrichtung für Bogenrotationsdruckmaschinen.

摘要

A vacuum transfer apparatus (10) for use in a sheet fed rotary printing press for supporting the unprinted side of a freshly printed sheet (12) as it is moved from the press impression cylinder (14) along a transfer path (P) to a further processing station of the press, the apparatus (10) including a vacuum chamber (44) supporting a plurality of rotatable elongated rollers (32) arrayed in spaced side-by-side parallel relationship laterally across the transfer path (P), and means for producing a pressure differential across the freshly printed sheet (12) to draw the unprinted side of the sheet (12) into engagement with the support rollers (32) by drawing air into the vacuum chamber (44) through the spaces between the rollers (32) as the sheet (12) is pulled along the transfer path (P) so that the printed side of the sheet (12) can not be marked or marred.