Paper for personal document sheets and security document from this paper

摘要

As per the invention, the paper for personal document sheets is coated with a mixture containing polyvinyl alcohol, dispersing agent, stabilising agent and a pigment, that subjected to a laser beam changes colour to become contrasting to the background paper. The pigment may be used in proportion from 0.1 % to 5 %. The security document has at least one personalised sheet is made from this paper.