A PLATE CYLINDER

摘要

A plate cylinder (4, 100)is provided. The plate cylinder comprises a rotational shaft (110) having means for attaching at least one printing plate (130) to said shaft (110), said rotational shaft (110) having an inner cylindrical body (112) being made of a first material, an intermediate sleeve (114) being made of a second material, and an outer sleeve (116) being made of a third material, wherein the Young's modulus of said second material is substantially less than the Young's modulus of said first and third material.