Abstract: A coating head for coating an engraved surface on a coating cylinder of a printing press is provided including a main body having a longitudinal cavity for liquid, open to the coating cylinder and having a seal to substantially seal said main body to the coating cylinder where the cavity has an injection zone providing for a liquid pressurizing zone within a portion of the cavity in the main body. The main body has an inlet to provide liquid to a supply chamber and an outlet to exhaust said liquid and air from an exhaust/return chamber. The seal includes at least a trailing doctor blade and a metering doctor blade, where the trailing doctor blade is at an angle of three to twelve degrees relative to a tangent of the coating cylinder taken at a center of the injection zone.

Abstract: A coating head device for coating an engraved surface on a coating cylinder of a printing press having a main body with a longitudinal cavity for liquid, open to the coating cylinder and substantially sealable to the coating cylinder. The cavity has an injection zone providing for a zone pressurizing the liquid within a portion of said cavity in the main body to compel liquid into cells in the engraved surface of the coating cylinder. The main body has an inlet to provide liquid to the supply chamber and a return to exhaust liquid from the outlet section.

Abstract: A coating head device for coating an engraved surface on a coating cylinder of a printing press having a main body with a longitudinal cavity for liquid, open to the coating cylinder and substantially sealable to the coating cylinder. The cavity has an injection zone providing for a zone pressurizing the liquid within a portion of said cavity in the main body to compel liquid into cells in the engraved surface of the coating cylinder. The main body has an inlet to provide liquid to the supply chamber and a return to exhaust liquid from the outlet section.