Device for coding printing sheets in a sheet-fed press

A sheet-fed printing press comprising:

• a sheet feeding device for introducing sheets that are to be printed into the sheet-fed printing press, the sheet feeding device including a conveyor configured to transport a shingled stream of sheets;
• a printing unit for printing the sheets with a static printed image that is identical for all sheets;
• a discharging mechanism for discharging printed sheets from the sheet-fed press;
• and
• a printing device without a printing form that is integrated into the sheet-fed press for printing the sheets with a static printed image or with a printed image that varies from sheet to sheet, the printing device being arrangeable at a plurality of positions in an area of the sheet feeding device;
• wherein the printing device is disposed facing an upper side of the convey or table and has an effective printing surface assigned to a top area of the sheets in the shingled stream on the conveyor table.

A sheet-fed printing press comprising:

• a sheet feeding device for introducing sheets that are to be printed into the sheet-fed printing press, the sheet feeding device including a conveyor configured to transport a shingled stream of sheets;
• a printing unit for printing the sheets with a static printed image that is identical for all sheets;
• a discharging mechanism for discharging printed sheets from the sheet-fed press;
• and
• a printing device without a printing form that is integrated into the sheet-fed press for printing the sheets with a static printed image or with a printed image that varies from sheet to sheet, the printing device being arrangeable at a plurality of different positions in an area of the sheet feeding device;
• wherein the printing device is disposed facing an underside of the conveyor table and has an effective printing surface to a bottom area of the sheets in the shingled stream on the conveyor table.

A sheet-fed printing press comprising:

• a sheet feeding device for introducing sheets that are to be printed into the sheet-fed printing press, the sheet feeding device including a conveyor configured to transport a shingled stream of sheets;
• a printing unit for printing the sheets with a static printed image that is identical for all sheets;
• a discharging mechanism for discharging printed sheets from the sheet-fed press;
• a printing device without a printing form that is integrated into the sheet-fed press for printing the sheets with a static printed image or with a printed image that varies from sheet to sheet, the printing device being arrangeable at a plurality of different positions in an area of the sheet feeding device, wherein the printing device is disposed in a stream feeder processing the shingled stream of sheets above an upper side or below an underside of the conveyor table;
• and
• a control system connected to a first sensor for detecting at least one the presence of sheets or a color of sheets across from the printing device and a second sensor for detecting a time of production for activation of the printing device.