Optical tape embosser drum with shim identification

Patent metadata

Field	Value
Publication number	US-10035285-B2
Application number	US-201615233041-A
Country	US
Kind code	B2
Filing date	Aug 10, 2016
Priority date	Jul 11, 2014
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A method is provided for making an embossing drum that is useable to emboss tape media. The method includes assembling together multiple stamper plates that each have embossing features for embossing tape media, and the stamper plates include at least one first plate and at least one second plate. Furthermore, the embossing features of each first plate are inverted with respect to the embossing features of each second plate.

First claim

What is claimed is:

1. A method of making an embossing drum for embossing tape media, the method comprising:
assembling together multiple stamper plates into a stamper plate body, the multiple stamper plates including a first stamper plate and a second stamper plate, the assembling comprising coupling a first stamper plate having first land and groove patterns to a second stamper plate having second land and groove patterns that are an inverse of the first land and groove patterns, each of the first stamper plate and the second stamper plate having 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 wherein the multiple stamper plates include two of the first stamper plates and two of the second stamper plates.

3. The method of claim 2 further comprising coupling the two first stamper plates to each other and coupling the two second stamper plates to each other.

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

5. The method of claim 4 further comprising forming each first stamper plate using one or more intermediate replicas made from the single master template.

6. The method of claim 4 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.

7. The method of claim 2 wherein each of the multiple stamper plates includes an identifier at each end of the respective stamper plate, and wherein the assembling comprises arranging the multiple stamper plates such that the identifiers of adjacent ends of adjacent stamper plates are usable to identify each stamper plate.

8. The method of claim 1 wherein the assembling comprises welding the first stamper plate to the second stamper plate.

9. The method of claim 1 wherein the assembling comprises coupling together the multiple stamper plates to form a cylindrical stamper plate body.

10. The method of claim 1 wherein the land and groove patterns comprise wobble patterns, and wherein the assembling comprises arranging the multiple stamper plates such that the wobble pattern of the first stamper plate is vertically mirrored with respect to the wobble pattern of the second stamper plate.

11. The method of claim 1 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.

12. 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.

13. An embossing drum for embossing tape media, the embossing drum comprising:
a first stamper plate having first land and groove patterns for embossing the tape media; and
a second stamper plate having second land and groove patterns that are an inverse of the first land and groove patterns positioned proximate the first stamper plate for embossing the tape media, wherein each of the first stamper plate and the second stamper plate 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.

14. The embossing drum of claim 13 wherein the land and groove patterns comprise wobble patterns, and the wobble pattern of the first stamper plate is vertically mirrored with respect to the wobble pattern of the second stamper plate.

15. The embossing drum of claim 13 further comprising an additional first stamper plate having the same configuration as the first stamper plate, and an additional second stamper plate having the same configuration as the second stamper plate, wherein the stamper plates are attached together.

16. The embossing drum of claim 15 wherein the first stamper plates are positioned adjacent to each other, and the second stamper plates are positioned adjacent to each other.

17. The embossing drum of claim 15 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 wherein the identifiers of adjacent ends of adjacent stamper plates are usable to identify each stamper plate.

18. The embossing drum of claim 13 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.

19. The embossing drum of claim 13 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.

20. The embossing drum of claim 13 wherein the first stamper plate and the second stamper plate are coupled together to form a cylindrical stamper plate body.

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