Abstract: In a holographic data storage medium (1′), which has a polymer film (2) which serves as a storage layer and can be changed locally by heating, the polymer film (2) is set up as a top layer of the data storage medium (1′). Arranged underneath the polymer film (2) is an absorber layer (4) which has an absorber dye. The absorber dye is set up to at least partly absorb a write beam serving to put information in and to discharge the heat produced in the process at least partly locally to the polymer film (2). In an advantageous refinement of the data storage medium (1′), there is an adhesive layer (6) underneath the absorber layer (4) and a partly transparent reflective layer (8) between the polymer film (2) and the absorber layer (4).

Abstract: The present invention relates to a lithograph for producing digital holograms in a storage medium, having a light source (8) for producing a write beam (10), having drive means (12, 14) for the two-dimensional movement of the write beam (10) relative to the storage medium (4) and having a first objective (16) for focusing the write beam (10) onto the storage medium (4) to be written.

Abstract: The invention relates to a hologram carrier having a hologram surface and a reference surface to facilitate the acquisition of the hologram surface by a device. In this case, provision is made for the reference surface to comprise at least one step, which is arranged to interengage with a complementary formation on the device in order to align said device.

Abstract: The invention relates to a method of providing an article with identifying information, in which a hologram is provided from which at least first and second hologram patterns separated physically from each other can be reproduced. In this case, provision is made for the hologram to be produced in such a way that the first and second hologram patterns can generally be reproduced in one and the same direction but in different planes.

Abstract: In a method of writing information in a data storage medium comprising an optical information medium which has a polymer carrier (1), atoms and/or molecules (4) that change the refractive index are introduced into the polymer carrier (1), at individual locations associated with information units, as a function of the information to be entered.

Abstract: A packaging tape (3) which comprises a polymer film is used as a holographic data carrier. The packaging tape (3) is set up for the storage of holographic information. Holographic information can be put into the packaging tape (3) with the aid of a writing device (4), before an object (1) is packaged by using the packaging tape (3), but also afterwards.

Abstract: The invention relates to a method for identifying articles, wherein article identification data are made available and the article is provided with a hologram representing said data so that the article can be identified by way of an intensity profile corresponding to said hologram. To this end, article-identifying individual data are provided, a hologram profile is digitally calculated using said individual data, and an intensity modulation of the hologram-producing beam is determined. The hologram-producing beam transfers the hologram pixels onto a hologram support that is associated with the article to be identified so that the article can be identified by way of the intensity profile reproduced from the associated hologram support.

Abstract: The invention relates to a method for producing a data memory comprising an optical information carrier. Said information carrier comprises several stacked series of layers, which are disposed for storing information and which have a polymer support (35) and an intermediate layer (38). According to the inventive method, several layers (35, 36, 37, 38) of at least one series of layers (39) are co-extruded.

Abstract: A data carrier (1) with a storage layer (2) which has a dye that can be changed by exposure to light is used for the storage of microimages by means of a write beam of a writing device.

Abstract: The invention relates to a data memory (1) comprising an optical information carrier (10), which has polymer film whose refractive index can be locally altered by heating. The optical information carrier (10) is wound on a reel (12) and is disposed for being unwound from the reel (12) in order to read and write information in the area (14) allocated therefor.

Abstract: A holographic data storage medium (1) has a polymer film which is set up as a storage layer (2) and whose surface structure can be changed locally by heating. The polymer film (2) is set up for the storage of holographic information via the local surface structure (6) of the polymer film (2). A reflective layer can be provided on the data storage medium.

Abstract: The inventive data memory (1) has an optically writeable and readable information carrier, which has a polymer film (11) whose refractive index can be locally altered by heating. An absorber is assigned to the polymer film (11) and is disposed for at least partially absorbing a write beam and for transferring, in an at least partially local manner, the heat generated thereby to the polymer film (11). The absorber is oriented in order to preferably absorb light with a polarization direction that is matched to the orientation of the absorber.

Abstract: A holographic data storage medium (1) has a polymer film which is set up as a storage layer (2) whose refractive index can be changed locally by heating. The polymer film is set up for the storage of optical phase information via the local optical path length of the polymer film, which is illuminated in transmission when the information is read out. To the polymer film, there can be assigned an absorber dye (8), in order to at least partly absorb a write beam to input information and to give up the heat produced in the process at least partly locally to the polymer film (2). Preferably, a reflective layer (6) is arranged behind the polymer film (2).

Abstract: A holographic data storage medium (1) has a storage layer (2) which contains a dye that can be changed, preferably bleached out or destroyed, by exposure to light. The storage layer (2) is set up for the storage of holographic information via the local absorption capacity in the storage layer (2). Preferably, a reflective layer (6) is arranged behind the storage layer (2).

Abstract: A data storage medium (1) has an optical information carrier which comprises a polymer film (11) wound in spiral fashion in a plurality of plies (10), through which information can be read from a preselected polymer film ply (10) and, optionally, written to a preselected polymer film ply (10). A varnish layer (12) set up as an adhesion layer is disposed between adjacent polymer film plies (10).

Abstract: An optical data store is proposed comprising a storage medium and a light source for storing data in the storage medium. The invention provides for the storage medium to be formed for the storage of data by heating above a threshold temperature, and the light source to be designed to focus long wave light for the purpose of heating the storage medium to a temperature below the threshold temperature and to focus short wave light, with which only the storage medium previously heated by long waves can be heated to a temperature above the threshold temperature.

Abstract: An adhesive tape dispenser for dispensing and cutting a length of an adhesive tape. The adhesive tape dispenser comprises an adhesive tape cutting device. The adhesive tape cutting device comprises a) a resting surface to which a tacky side of said adhesive tape can be adhered while the adhesive tape is being cut, b) two lateral webs extending in the same direction from both edges of the resting surface to serve as guides for the adhesive tape, and c) a cutting blade having a blade edge and positioned on an inner side of one or both lateral webs in such a way that the blade edge is inclined at an angle which is oblique relative to the resting surface. The lateral webs have a height from the resting surface which is the same or is higher than each cutting blade. The adhesive tape dispenser is useful to dispense and cut adhesive tapes comprising a backing of biaxially oriented or highly stretched film, such as polyolefin.

Abstract: A data storage medium (1) comprises an information carrier which is wound in a spiral fashion and on which information units are provided which can be read optically. The information carrier is optically transparent.

Abstract: Process for producing adhesion promoter layers on a material in web form, characterized in that the adhesion promoter layers are applied to the web-form material by means of low-pressure plasma polymerization, the material in web form being guided continuously through a plasma zone in which there is a low-pressure plasma which is generated by electrical discharge, especially kHz, MHz or GHz discharge.