B - Operations – Transporting – 41 – L
Patent
B - Operations, Transporting
41
L
101/82
B41L 21/08 (2006.01) B41F 21/00 (2006.01) B41F 21/06 (2006.01) B41F 22/00 (2006.01)
Patent
CA 1129245
ABSTRACT OF THE DISCLOSURE The invention relates to a sheet-transporting drum in rotary printing presses whereby the freshly printed sheet is placed upon the surface of the drum. In order to avoid smearing the printing ink, a cushion of air is produced, by means of a jet of air between the sheet to be transported and the surface of the drum, the entire surface of the said sheet resting upon the said cushion of air. Only a small amount of air is required to build up this cushion, and it may be used for papers of all thicknesses, up to cardboard. The said cushion is built up by means of air-nozzles which direct the flow of air into an area between the surface of the drum and the sheet, the said cushion of air being built up by the resulting ram pressure.
349299
Heidelberger Druckmaschinen Aktiengesellschaft
Johnson Douglas S. Q.c.
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