To materialize an automatic register adjusting means of a multicolored sheet-fed printer that can automatically correspond to adjust itself to the registered value of the same conditions at a time such as cleaning a blanket cylinder and perform normal printing in short time.

In the multicolored sheet-fed printer equipped with a plurality of printing units with each intended for respective color, an input means 14 which establishes registered amount of changes beforehand for every printing unit, and a control means 13 which controls the registered value to become the normal value from the value corresponding to the registered amount of changes established by this input means 14 after a prescribed time are set.