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7182890 |
Matrix and method of producing said matrix
The invention relates to a matrix suitable for use in the replication of a plastic element having a positive microstructure, comprising a first wear-resistant layer that is supported by a carrier...
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7114947 |
Optical disk mold tooling for reduced edge wedge
An optical disk exhibiting no detrimental thickness increase (edge wedge effect) that arises at the outer diameter of an optical disk substrate during an injection molding manufacturing process,...
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7034971 |
Fabrication of sandwiched construction media
In one embodiment, holographic data storage medium includes a first thermoplastic substrate portion having a thickness less than approximately 2 millimeters and a second thermoplastic substrate...
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7008208 |
Grounded molding tool for manufacture of optical components
In one embodiment, the invention is directed to an injection molding tool that has improved grounding. The injection molding process creates significant amounts of static electricity in the molten...
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6977052 |
Check disk for optical data storage disk manufacturing
In one embodiment, the invention is directed to a manufacturing process for optical data storage disks that makes use of a check disk very early in the production cycle. The check disk can be...
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6961950 |
Variable thickness stamper for creation of flat molded substrates
The invention is directed toward techniques for creating molded substrates for use in various different data storage media. The molded substrates have improved thickness profiles that can improve...
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6884370 |
Matrix and method of producing said matrix
The invention relates to a matrix suitable for use in the replication of a plastic element having a positive microstructure, comprising a first wear-resistant layer that is supported by a carrier...
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6850345 |
Sandwich holographic disk construction with thin molded substrates
In one embodiment, holographic data storage medium includes a first thermoplastic substrate portion having a thickness less than approximately 2 millimeters and a second thermoplastic substrate...
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6752611 |
Optical disk mold tooling for reduced edge wedge
An optical disk exhibiting no detrimental thickness increase (edge wedge effect) that arises at the outer diameter of an optical disk substrate during an injection molding manufacturing process,...
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6638692 |
Replicated regions on optical disks
The invention is directed toward techniques for stamping optical data storage disks. A master is first created to include several distinct information regions etched upon a master surface. The...
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6616867 |
Multi-generation stampers
In exemplary embodiments, the invention provides one or more processes for making stampers for stamping replica data storage disks. For instance, the invention may provide a process for making a...
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6611365 |
Thermoplastic substrates for holographic data storage media
In one embodiment, holographic data storage medium includes a first thermoplastic substrate portion having a thickness less than approximately 2 millimeters and a second thermoplastic substrate...
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6454970 |
Matrix, method of producing and using the matrix and machine including the matrix
The invention relates to a method of producing a matrix suitable for use in a plastic element-producing machine, a matrix produced in accordance with the method and use of such a matrix to form a...
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6440333 |
Optical recording medium, and method of manufacturing same
There are provided an optical recording medium and a method of manufacturing the optical recording medium. The optical recording medium has a pattern of microscopic depressions and projections...
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6365329 |
Process for making multiple data storage disk stampers from one master
A method of making a stamper for use in a data storage disk molding process. The method includes making a first stamper including the steps of providing a stamper body having an information layer...
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6300043 |
Method of forming resist film
A method of forming a resist film comprises (a) forming a resist film on a substrate, and (b) removing a surface region of the resist film formed in the step (a) so as to decrease the thickness of...
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6238846 |
Method of manufacturing a stamper suitable for producing optical discs
A method of manufacturing a stamper for producing optical discs involves the application of a photoresist film to a substrate and subsequently structuring the photoresist film by exposing and...
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6190838 |
Process for making multiple data storage disk stampers from one master
A method of making a stamper for use in a data storage disk molding process. The method includes making a first stamper including the steps of providing a stamper body having an information layer...
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