| 摘要 |
<p>Coding of a sheet-like or web-like material to be processed further, whereat an invisible identification code concerning the material is applied to at least one edge of the sheet-like or web-like material. The code may include data essential in view of further processing of the sheet-like or web-like material. In porous materials, the marker agent forms a volume at the edge of the material. In dense materials, the code in accordance with the invention consists of dots of marker agents on the face of the edge of the material to be coded. The marking in accordance with the invention can take place when the sheet-like material is in a bundle or being stacked into a bundle so that a number of sheets are marked in one operation in the direction of the edge of the bundle of sheets. The marking of a web-like material can take place when the web-like material is in a roll or being wound into a roll, in which case an invisible identification code is applied to at least one of the edges of the material.</p> |
