Sleeve-shaped printing element for web-processing rotary printer, is formed on material permitting radial expansion and has inner diameter increasing from one end to another

摘要

A structure formed of material permitting radial expansion, has inner diameter increasing from one to another end and with constant wall thickness. A carrying cylinder (4) holding the structure, has ducts (8) opened on its circumferential surface for discharging the expansion medium pressurized by a power source (1).