Automatic Presetting System of Registration on an Offset Printing Press

We successfully developed an ink presetting system for offset printing in 1981. This development was followed by the efforts to develop a register presetting system in order to further reduce the make-ready time and paper wastage. A new register presetting system was thus completed in August 1983. This new register presetting system operate in such a manner that a register mark written on a PS plate is read by a sensor on a plate cylinder of the printing press to attain automatic registry before starting printing. With this registration system coupled with an ink presetting system, both the adjusting time in the makeready time and the paper wastage were reduced to one fourth for a sheetfed offset press.