Gravure printing is depend on pressure of the impression roller made ink to be attracted out of the gravure cells and onto the surface of the web ,printing was finished .Therefore ,resilient of the impression roller ,surface gravure cylinder ,paper ,ink ,so on ,can influence printing quality everyone .For example if less pressure of impression roller ,little ink onto the surface of the web from gravure cylinder .More power pressure of impression roller ,would causes paper cut away easily .

E.Sun electrostatic assist can avoid objection .A high-voltage current-stabilized power supply transfers currents to an impression roller via the charge transfer assembly .The impression roller has a conductive surface and an electrostatic filed is set up across the “nip” .This cause print ink to be attracted out of the gravure cells and onto the surface of the web more consistently and with less pressure on the impression roller ,so that the print quality is improve ,in particularly the middle and lighter tones . Electrostatic attraction is used to improve the ink transfer from gravure cylinder to the web ,especially in those cases where an uneven web surface makes irregular contact with the cylinder .Dot skip or speckle is virtually eliminated . E.Sun ESA system extensively used with solvent and water-based inks in the gravure printing industry.

E.Sun do our best to make ESA in technology .Now E.Sun ESA is the same in function technique and reliability as the world leader .Another , E.Sun ESA can exchange for produce with other country's ESA .