Method of controlling a start-up of paper travel in a printing press

Method of controlling a start-up of paper travel and printing, respectively, in a printing press having an electrically operated dryer for printing products printed with ink curable by drying, the dryer being preheatable over a limited time period, which comprises:

• determining a limit value representing optimum operating conditions of a dryer and a sequence for the start-up of paper travel and printing, respectively, as a function of ambient temperature, a respective ink and varnish used and a thickness of a layer thereof, time of paper travel through the printing press to the dryer, air volume of a drying oven of the dryer, and desired drying temperature or heating power;
• switching-on the dryer for heating the dryer;
• and
• subsequently switching-on a drive for effecting paper travel and printing for starting-up the paper travel and the printing, respectively, at an instant of time before the temperature in the dryer reaches an optimum drying temperature, such that the printing product enters the dryer just when the dryer has reached its optimum drying temperature.