Patent ID: 6354204
Filing Date: 2002-03-12
Classification: B41F,B41N

Abstract:
A lithographic printing device comprising:a plurality of plate cylinders provided for respective colors; a plurality of packing sheets respectively attached to said plate cylinders, each packing sheet having a series of protruded pieces aligned in a circumferential direction of said respective plate cylinder; and a plurality of press plates respectively provided on said packing sheets, each press plate having engaging holes into which said protruded pieces of said respective packing sheet are respectively inserted, wherein each series of protruded pieces satisfies the following equation: 2D&lE;P&lE;4.06Ã—103Ã—D/W, â€ƒwhere P is a pitch of said series of protruded pieces in said circumferential direction, D is a diameter of each protruded piece, and W is a width of said press plate.