摘要:
An apparatus for fixing a sheet on the surface of an electrically conductive cylinder of a printing machine for processing sheets, in particular, a sheet-fed offset printing machine. The apparatus includes an electrode that extends over the width of the cylinder for creating an electric field for adhering the sheet to the surface of the cylinder and an air directing device for directing pressurized air streams against the sheet and preliminary positioning the sheet onto the cylinder prior to being acted upon by the electric field. Various alternative embodiments of the sheet fixing apparatus are disclosed.
摘要:
A method for creating a structured surface or a safety or decorative feature based thereon in a process of the printing industry wherein a liquid, preferably ink or varnish, and particles, preferably pearlescent pigments or a material having a similar effect are applied to a substrate. The liquid is provided with a surface structure and is characterized by a creation of a random surface structure, in particular a structure of mountains and valleys, of the liquid and by the creation of a random particle distribution, preferably a random particle orientation, by blowing a gas such as air onto the unhardened liquid which may be heated if desired. The surface that is thus created has a unique structure that is discernible by the human eye or detectable by camera and may, for instance, have a light/dark change.