Abstract: A sealing label (1) with a carrier ply (2), an adhesive layer (4), and an intermediate ply (3) arranged between the carrier ply (2) and the adhesive layer (4) with predetermined breaking points (30) for the internal separation of the intermediate ply (3), wherein the carrier ply (2) has at least a paper layer (21). A use of the sealing label (1), the production method thereof and a use of a carrier ply (2) including or consisting of a paper layer (21) for producing the sealing label (1).

Abstract: A security label set comprising security labels, a backing material common to the security label, wherein the at least one security label is arranged directly on the common backing material and the other security label is indirectly arranged on the common backing material by being arranged to the backing. The security labels may be releasably arranged on the backing. The security labels are individualized by including serial or random numbers o by a computer-generated hologram. The backing may be in form of a web-form liner.

Abstract: The present invention relates to a multilayer security seal comprising a carrier and an adhesive layer arranged on the entire area underneath the carrier, the following layers being arranged between carrier and adhesive layer in any case: a) a first layer—marking layer—not applied to the entire area, b) a second layer—contrast layer—applied to the entire area. It is proposed that an individual identifier, which is at least partly provided in the composite, be contained for the purpose of verification.

Abstract: A method for the calculation and storage of a computer-generated multilayer hologram with more than or equal to 2 holograms includes the following steps. Field AO of a readout beam and field AR in the reflection plane are preset as mathematical functions. Except for the hologram to be calculated, all the other holograms of the layer structure are also preset as mathematical functions. Fields A+/A? are then calculated on both sides of hologram hi, as a result of which hologram function hi, is calculated by forming a quotient from fields A+/A?.

Abstract: An optical data storage device has a number of storage strata (1, 2, 3) arranged one above the other, each of which has a reflection layer, preferably a metal layer (12, 22, 32), which, in a predetermined optical wavelength range, has an initial absorption of at least 5%, preferably at least 10%, and an initial transmission of at least 5%, preferably at least 10%, and the transmission or reflection of which can be varied selectively by thermal treatment. In a method for writing information to such an optical data storage device, the information is introduced into a respective storage stratum (1, 2, 3) by means of a writing laser (40) by local variation of the optical properties, to be precise preferably initially at the storage stratum (1) lying closest to the focusing optical system of the writing laser (40) and progressing from there from storage stratum to storage stratum, the transmission or reflection being set in a respective storage stratum (1, 2, 3) by thermal treatment (41).

Abstract: The invention relates to a commonplace object with an outer surface (4) that encircles the commonplace object (2) and with at least one cylindrical section (6) of the surface (4), in which the technical problem of specifying a commonplace object to whose surface a relatively large amount of information can be applied is solved in that the cylindrical section (4) of the surface (6) consists of a material which can be changed optically, and in that a data bit sequence is written along at least one track (8) on the cylindrical section (4).

Abstract: The invention relates to a commonplace object with an outer surface (4) that encircles the commonplace object (2) and with at least one cylindrical section (6) of the surface (4), in which the technical problem of specifying a commonplace object to whose surface a relatively large amount of information can be applied is solved in that the cylindrical section (4) of the surface (6) consists of a material which can be changed optically, and in that a data bit sequence is written along at least one track (8) on the cylindrical section (4).

Abstract: The invention relates to a method for the calculation of a computer-generated multilayer hologram with more than or equal to 2 holograms. Field A0 of a readout beam and field AR in the reflection plane are preset as mathematical functions. Except for the hologram to be calculated, all the other holograms of the layer structure are also preset as mathematical functions. Fields Ai+/Ai− are then calculated on both sides of hologram hi, as a result of which hologram function hi is calculated by forming a quotient from fields Ai+/Ai−.