Patent ID: 6851359

Claim:
An offset printing method comprising the steps of: regulating a temperature T 1 of an inking unit ( 1 ); forming a picture to be printed on a plate-holder-cylinder ( 3 ) while regulating a temperature T 2 of the plate-holder-cylinder; transferring the picture onto a blanket ( 4 ) carried by a blanket-holder-cylinder ( 5 ) while regulating a temperature T 3 of the blanket-holder-cylinder ( 5 ); and after said transferring step 1 transferring the picture onto a paper compressed between the blanket ( 4 ) and a back pressure cylinder ( 7 ), wherein the temperature value T 2 is smaller than both of temperature T 1 and temperature T 3 and that a means for regulating ( 10 ) the temperature T 3 of the blanket-holder-cylinder ( 5 ) uses an electrical heater, said electrical heater is a resistor ( 57 ) placed between a blanket-holder outer envelope ( 54 ) and resistor-holder inner envelope ( 53 ), both said envelopes are disposed concentrically between a priming cord ( 51 ) and a cable side cord ( 52 ) and said cable is in connection with the resistor and a temperature probe ( 58 ) controlling the temperature on the outer envelope ( 54 ).