Optical tape embosser drum with shim identification

Patent metadata

Field	Value
Publication number	US-10350792-B2
Application number	US-201816023372-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Jul 11, 2014
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

A method is provided for making stamper plates for an embossing drum for embossing tape media. At least one first stamper plate is formed using a master template. The at least one first stamper plate includes first land and groove patterns that are an inverse of the master template land and groove patterns. At least one second stamper plate is formed from the at least one first stamper plate. The at least one second stamper plate includes second land and groove patterns that are an inverse of the first land and groove patterns. Furthermore, the first stamper plates and the second stamper plates have four sections arranged in a travel direction of the tape media, a first and a fourth of the four sections having land and groove patterns that are laterally mirrored with respect to each other. A first stamper plate is coupled to a second stamper plate to form part of the drum for embossing tape media.

First claim

What is claimed is:

1. A method of making stamper plates for an embossing drum for embossing tape media, the method comprising:
forming two or more first stamper plates using a master template, the two or more first stamper plates having first land and groove patterns that are an inverse of master template land and groove patterns of the master template;
forming two or more second stamper plates from at least one of the two or more first stamper plates such that the two or more second stamper plates have second land and groove patterns that are an inverse of the first land and groove patterns;
coupling two of the first stamper plates to each other and coupling two of the second stamper plates to each other to form part of the drum for embossing tape media;
wherein each of the two or more first stamper plates and the two or more second stamper plates have four sections arranged in a travel direction of the tape media, a first and a fourth of the four sections having land and groove patterns that are laterally mirrored with respect to each other.

2. The method of claim 1 further comprising forming each first stamper plate using a single master template.

3. The method of claim 2 further comprising forming each first stamper plate using one or more intermediate replicas made from the single master template.

4. The method of claim 2 further comprising forming each second stamper plate using one of the first stamper plates or an additional first stamper plate made using the single master template.

5. The method of claim 1 wherein each of the stamper plates includes an identifier at each end of the respective stamper plate, and further comprising arranging the stamper plates such that the identifiers of adjacent ends of adjacent stamper plates are usable to identify each stamper plate.

6. The method of claim 1 wherein the first of the four sections of the second stamper plate is laterally mirrored with respect to the first of the four sections of the first stamper plate and the fourth of the four sections of the second stamper plate is laterally mirrored with respect to the fourth of the four sections of the first stamper plate.

7. The method of claim 1 wherein the stamper plates are formed with wobble patterns, and the wobble patterns of the two or more first stamper plates are vertically mirrored with respect to the wobble patterns of the two or more second stamper plates.

8. A method of making stamper plates for an embossing drum for embossing tape media, the method comprising:
forming one or more first stamper plates using a master template, the one or more first stamper plates having first land and groove patterns that are an inverse of master template land and groove patterns of the master template;
forming one or more second stamper plates from one of the one or more first stamper plates such that the one or more second stamper plates have second land and groove patterns that are an inverse of the first land and groove patterns; and
coupling the one first stamper plate to the one second stamper plate to form part of the drum for embossing tape media;
wherein each of the one or more first stamper plates and the one or more second stamper plates have four sections arranged in a travel direction of the tape media, a first and a fourth of the four sections having land and groove patterns that are laterally mirrored with respect to each other.

9. The method of claim 8 wherein the first of the four sections of the second stamper plate is laterally mirrored with respect to the first of the four sections of the first stamper plate and the fourth of the four sections of the second stamper plate is laterally mirrored with respect to the fourth of the four sections of the first stamper plate.

10. The method of claim 8 wherein the stamper plates are formed with wobble patterns, and the wobble patterns of the one or more first stamper plates are vertically mirrored with respect to the wobble patterns of the one or more second stamper plates.

11. A method of making stamper plates for an embossing drum for embossing tape media, the method comprising:
forming a first stamper plate using a master template such that the first stamper plate has first land and groove patterns that are an inverse of master template land and groove patterns of the master template;
forming a second stamper plate from the first stamper plate such that the second stamper plate and the first stamper plate have inverse land and groove patterns;
bending the second stamper plate and the first stamper plate such that each of the second stamper plate and the first stamper plate has a curved configuration; and
coupling the first stamper plate with the second stamper plate to form a cylindrical body,
wherein the first stamper plate and the second stamper plate each have four sections arranged in a travel direction of the tape media, a first and a fourth of the four sections having land and groove patterns that are laterally mirrored with respect to each other.

12. The method of claim 11 wherein the coupling comprises welding the first stamper plate to the second stamper plate.

13. The method of claim 11 wherein forming the first stamper plate comprises forming an intermediate replica from the master template, and then forming the first stamper plate from the intermediate replica.

14. The method of claim 11 wherein the stamper plates are formed with wobble patterns, and the wobble pattern of the first stamper plate is vertically mirrored with respect to the wobble pattern of second stamper plate.

15. The method of claim 11 wherein the first of the four sections of the second stamper plate is laterally mirrored with respect to the first of the four sections of the first stamper plate and the fourth of the four sections of the second stamper plate is laterally mirrored with respect to the fourth of the four sections of the first stamper plate.

16. The method of claim 11 wherein the land and groove patterns define embossing features, and the embossing features of each stamper plate of the first and second stamper plates include an identifier at each end of each stamper plate, and further comprising arranging the stamper plates such that the identifiers of adjacent ends of adjacent stamper plates are usable to identify each stamper plate.

17. The method of claim 11 wherein the stamper plates include two of the first stamper plates and two of the second stamper plates.

18. The method of claim 17 further comprising coupling the two first stamper plates to each other and coupling the two second stamper plates to each other.

19. The method of claim 17 further comprising forming at least one of the second stamper plates using an additional first stamper plate made using the master template.

20. The method of claim 11 wherein the first of the four sections have groove patterns with identically wobbled edges and the fourth of the four sections have land patterns with identically wobbled edges.

Assignees

• Oracle Int Corp

Inventors

• Mahnad Faramarz

Classifications

• G11B7/263

  Preparing and using a stamper, e.g. pressing or injection molding substrates (production of optical record carriers, e.g. optical discs B29D17/005) · CPC title

• G11B7/24009

  Tapes, long films or long sheets · CPC title

• B29K2905/08

  Transition metals · CPC title

• B29D17/005

  Producing optically read record carriers, e.g. optical discs · CPC title

• B29C2043/463

  corrugated, patterned or embossed surface · CPC title