| 摘要 |
<p>A new and improved printing apparatus using an image carrier sleeve (61) which is formed of either carbon fiber/particles or from a relatively thin flat sheet of metal into a cylinder which is substantially non-expandable. The flat sheet of metal, for example, stainless steel or tin, is rolled to form a cylinder of desired diameter and welded together along the longitudinal edges. The weld seam or spots may be filed to have a substantially flat and smooth surface. Also disclosed is a mandrel assembly (10) having an outer metal expansion sleeve member (16) with one or more yield or preferential expansion regions, for example, circumferential grooves for applying pressure to effect uniform outward expansion of said outer sleeve member, so as to frictionally grip the image carrier sleeve.</p> |
