Patent ID: 8112025

Claim:
A cooling device for a printing substrate after its passage through a fixing station of an electrographic printer or copier, said fixing station thermofixing toner images applied on the printing substrate, comprising: a transport path for the printing substrate; a first cooling unit connected with a first coolant source provided along one side of the transport path for the printing substrate, said first cooling unit having a first perforated plate on a surface facing towards the printing substrate, a coolant being conducted through said first perforated plate onto one side of the printing substrate; a second cooling unit connected with a second coolant source provided along an opposite side of the transport path for the printing substrate, said second cooling unit having a second perforated plate on a surface facing towards said opposite side of the printing substrate, a coolant being conducted through said second perforated plate onto the opposite side of the printing substrate; a nip unit for the printing substrate that has a nip roll integrated into the second cooling unit such that said nip roll is cooled by the second cooling unit; and the nip unit comprising the nip roll and a contact pressure roller that presses the printing substrate onto the nip roll so that the nip roll draws the printing substrate past the first perforated plate of the first cooling unit and past the second perforated plate of the second cooling unit.