In the implementation of the method for manufacturing a texture drum, a surface structure is produced in the region of a surface with an electron beam, preceding a charging occurring within a working interval with an electrons beam having an energy density generating a recess, the texture drum is charged...http://www.google.com.tw/patents/US5324912?utm_source=gb-gplus-share專利 US5324912 - Method and apparatus for manufacturing a texture drum
