The invention relates to a method for producing a sheet of tracing paper having a darkness index of less than 40 % measured in accordance with ISO 2469, in which a paper pulp based on virgin cellulose fibres in aqueous suspension is subjected to the action of a cellulase-based enzyme product for a pre-determined period of time prior to the mechanical refining thereof.
D21H 27/06 - Vegetable or imitation parchmentGlassine paper
D21B 1/12 - Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods by the use of steam
The present invention relates to a security film comprising a fibrous substrate incorporated at least partially in which is a security strip that comprises at least one security element and that extends between two edges of said fibrous substrate, said security strip being made of paper and comprising an adhesive.
The present invention relates to a method of reading at least one bar code (20) carried by a substrate (21), the method comprising the following steps: a) generating, especially in an automatic manner, when presenting the bar code to a system for reading the bar code, at least one authentication cue related to an intrinsic physical characteristic of the substrate and independent of the data contained in the bar code, and b) allowing the reading of the bar code (20), only in the event of a positive authentication of the substrate or reading the bar code regardless of the result of the authentication of the substrate and in the event of negative authentication of the substrate, preventing access to just one part of the data contained in the bar code and/or to any data that may be associated with the bar code, and which is stored on a separate data medium from the substrate.
G06K 19/10 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
4.
SECURE ARTICLE, IN PARTICULAR SECURITY AND/OR VALUABLE DOCUMENT
The invention concerns a secure article, in particular a security and/or valuable document (1), comprising: at least one substrate, at least one visible authenticating structure (4; 11; 22; 32; 42; 51), at least one inspection zone (5) defined at least partly by the authenticating structure, the authenticating structure delimiting at least partly the outline of the inspection zone and/or serving to locate the inspection zone, in the inspection zone (5), at least one identifying element (3, 50, 61) different from the authenticating structure, the inspection zone enabling an identification information to be supplied with at least one feature, in particular spatial or physical, of said at least identifying element.
16 - Paper, cardboard and goods made from these materials
Goods & Services
Papers; carbonless papers; thermal papers; papers for
printing and writing; coated papers; fiduciary and security
papers; decorative papers for laminated panels; papers for
sterilised medical packaging; release papers; fine art
papers; drawing papers; tracing papers; papers and films for
computer aided design; tissue papers; synthetic coated
papers and boards, base papers for use in the manufacture of
diazocopying paper; flexible base papers for use in the
manufacture of grinding and sanding sheet materials.
