1.Tri-diameter Paper-transporting Cylinder 2.Pneumatically Controlled Clutch 3.Easy operation and low maintenance. Main Parameters for DH452 four color offset press Maximum size of paper520*365mmMinimum size of paper257*182mmMaximum printing area505*350mmThickness0.04--0.4mmPaper- feeding modeContinuous paper feedingPaper- feeding board capacity500mmPaper -delivering board capacity420mmDampening ...