Abstract: The present invention relates to a sticker for sticking onto an object, having an upper side (Ia) and an underside (Ib), having a substrate (2) which is provided on the upper side (Ia) and has a region (3) for storing an optical structure, having a contact surface (4, 11) which is provided on the underside (Ib), and having an adhesive (5, 6, 12, 14) which is connected to the contact surface (4, 11) for sticking the sticker (A1, A2, A3, A4, A5, A6) onto the object. The problem of specifying a sticker for sticking onto an object, which sticker ensures satisfactory quality of the reproduction of the information contained in the optical structure even in the case of unevennesses of the surface to be adhesively bonded, is solved by at least one part region of the substrate (2) being decoupled from the object in force terms in the adhesively bonded state.

Abstract: In a method of entering information into an optically writable and readable data storage medium having a polymer film which can be changed locally by heating in order to store information and to which there is assigned an absorber dye (34) which is set up to absorb a write beam (36), at least partly, and to transfer the heat produced in the process, at least partly, locally to the polymer film, first of all the absorber dye is heated locally in a predetermined region of the polymer film in accordance with the information to be entered, specifically by means of a pulsed write beam (36). After that, the absorption properties of the absorber dye (34) are changed by means of light, to be specific preferably by means of a fixing beam (37) which bleaches (38) the absorber dye (34) in the written region of the polymer film.

Abstract: An adhesive security tape comprises a polymer film whose refractive index and/or interface structure can be changed locally by heating. Disposed below the polymer film is an absorber layer comprising an absorber dye set up at least partly to absorb a write beam directed onto the absorber layer, to emit at least some of the generated heat to the polymer film locally, and in doing so to undergo local change itself. Below the absorber layer there is an adhesive layer. The adhesion between the adhesive layer and the absorber layer is greater than the adhesion to the polymer film. There is preferably a partly transparent reflection layer between the polymer film and the absorber layer.

Abstract: In a method of entering information into an optically writable and readable data storage medium having a polymer film which can be changed locally by heating in order to store information and to which there is assigned an absorber dye (34) which is set up to absorb a write beam (36), at least partly, and to transfer the heat produced in the process, at least partly, locally to the polymer film, first of all the absorber dye is heated locally in a predetermined region of the polymer film in accordance with the information to be entered, specifically by means of a pulsed write beam (36). After that, the absorption properties of the absorber dye (34) are changed by means of light, to be specific preferably by means of a fixing beam (37) which bleaches (38) the absorber dye (34) in the written region of the polymer film.

Abstract: An adhesive security tape (1) comprises a polymer film (2) whose refractive index and/or interface structure can be changed locally by heating. Disposed below the polymer film (2) is an absorber layer (6) comprising an absorber dye set up at least partly to absorb a write beam directed onto the absorber layer (6), to emit at least some of the generated heat to the polymer film (2) locally, and in doing so to undergo local change itself. Below the absorber layer (6) there is an adhesive layer (8). The adhesion between the adhesive layer (8) and the absorber layer (6) is greater than the adhesion to the polymer film (2). There is preferably a partly transparent reflection layer (4) between the polymer film (2) and the absorber layer (6).