The off-set printers machines do the transport of the sheets, by the units printers, of tweezerses that they hold the same by the extremity (with to 13 mm of fixacion). The transport occurs between cylinders, being the sense from the rotation inverter to each change between cilinders. When the sheet is passing for the breaks top of the body impressor, we have the shock from the same one with the monoblock from the machine, therefore the only points of fixacion of the same saints the tweezerses. This shock (that in general occurs from the half from the sheet to the end from the sheet) provokes risks in the impression. To only form of we will maintain the sheet prey to the cylinder impressor during all the time is we will put a stream of air (with high pressure), blowing to same intermittently (always of the environment from the sheet for the end). This puff is necessary be intermittent for that have the possibility completely the assembly stayed pressurized enough, for when the valves will be opened the puff have the sufficient pressure for maintain the sheet I park to the cylinder in all without journey. They will want install this device in all of the bodies printers and more in the station of shellac, making up a gross one of six units with the puff. We have printers to bolts for up the necessary air, however in you quiz carried out with the continuous puff, was not possible we will reach the necessary pressure for maintain the sheets prey to the cylinders
