Use of a data carrier for storing micro-images

• US 20030179277A1
• Filed: 05/09/2003
• Published: 09/25/2003
• Est. Priority Date: 08/11/2000
• Status: Abandoned Application

• Current Assignee: tesa scribos GmbH (Leonhard KURZ Stiftung & Company KG)
• Original Assignee: tesa scribos GmbH (Leonhard KURZ Stiftung & Company KG)
• Inventors: Stadler, Stefan, Leiber, Jorn
• Application Number:
  US10/344,164
• Publication Number:
  US 20030179277A1
• Time in Patent Office: Days
• US Class Current: 347/224
• CPC Class Codes: G03C 5/56 Processes using photosensitive compositions covered by the groups G03C1/64 - G03C1/72 or agents therefor G03C5/58 takes precedence
• CPC Class Codes: G03H 1/02 Details of features involved during the holographic process; Replication of holograms without interference recording
• CPC Class Codes: G03H 1/0891 Processes or apparatus adapted to convert digital holographic data into a hologram G03H1/2294 takes precedence
• CPC Class Codes: G03H 2001/0264 Organic recording material
• CPC Class Codes: G03H 2001/0478 Serial printer, i.e. point oriented processing
• CPC Class Codes: G03H 2250/42 Reflective layer G03H2250/36 takes precedence
• CPC Class Codes: G03H 2260/52 Photochromic reactivity wherein light induces a reversible transformation between two states having different absorption spectra
• CPC Class Codes: G11B 7/0065 Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
• CPC Class Codes: G11B 7/24044 for storing optical interference patterns, e.g. holograms; for storing data in three dimensions, e.g. volume storage G11B7/24038 takes precedence
• CPC Class Codes: G11B 7/245 containing a polymeric component
• CPC Class Codes: G11B 7/246 containing dyes
• CPC Class Codes: G11B 7/2467 azo-dyes
• CPC Class Codes: G11B 7/247 methine or polymethine dyes
• CPC Class Codes: G11B 7/249 containing organometallic compounds G11B7/246 takes precedence
• CPC Class Codes: G11B 7/258 of reflective layers

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.

Claims

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

2. Use according to claim 1, characterized in that the dye can be bleached out or destroyed, at least to some extent.

3. Use according to claim 2, characterized in that the dye has at least one of the dyes selected from the following group:

azo dyes, diazo dyes, polymethine dyes, arylmethine dyes, aza[18]annulene dyes.

4. Use according to one of claims 1 to 3, characterized in that the dye has a photochromic material.

5. Use according to claim 4, characterized in that the photochromic material has at least one of the materials selected from the following group:

spirocompounds, inorganic metal complexes.

6. Use according to claim 4 or 5, characterized in that the photochromic material has a reversible system.

7. Use according to one of claims 1 to 6, characterized in that the data carrier (1) has a carrier (7) for the storage layer (2).

8. Use according to claim 7, characterized in that the carrier (7) has a polymer film.

9. Use according to one of claims 1 to 8, characterized in that the storage layer (2) has a polymer matrix in which dye molecules are embedded.

10. Use according to claim 9, characterized in that the polymer matrix has at least one of the polymers or copolymers selected from the following group:

polymethyl methacrylate, polyimide, polyetherimide, polymethylpentene, polycarbonate, cycloolefinic copolymer.

11. Use according to one of claims 1 to 10, characterized in that the data carrier (1) has an adhesive layer for sticking the data carrier (1) to an object.

12. Use according to one of claims 1 to 11, characterized in that at least one microimage is stored on the data carrier (1).

13. Use according to one of claims 1 to 12, characterized in that the data carrier (1) is set up for the storage of at least one of the microimages selected from the following group:

microportraits, microsignatures, instructions for components.

14. Method of putting a microimage into a data carrier which has the features according to one of claims 1 to 13, wherein a write beam of a writing device, preferably a laser lithograph, is aimed at a storage layer (2) of the data carrier (1) and is driven in accordance with the two-dimensional microimage information contained in the microimage in such a way that the dye in the storage layer (2) is changed locally in accordance with the two-dimensional microimage information.

15. Method according to claim 14, characterized in that the two-dimensional microimage information is put into the storage layer in the form of pixels (4) of predefined size, preferably in the range from 500 nm to 1 μ

m.

16. Method according to claim 15, characterized in that the local microimage information is stored in a pixel in binary encoded form.

17. Method according to claim 15, characterized in that the local microimage information is stored in a pixel (4) in continuously encoded form.