# US 2013/0155829 A1 · Recording apparatus and method

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- Number: US 2013/0155829 A1
- Document ID: US20130155829A1
- Status: Published application
- Kind: A1
- Application number: 13/611,262
- Filed: 2012-09-12
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: CMC Magnetics Corporation
- Inventors: Yung-Hui HUNG; Cheng-Pi LEE; Kun-Ling LI; Min-Hao PAN
- Web page: https://patentgrep.com/patent/US20130155829A1

## CPC

- G11B 7/0045: Recording (G11B7/006, G11B7/0065 take precedence)
- G11B 7/24035: Recording layers (substrates also used as recording layers G11B7/24047)
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

A recording apparatus characterized in that comprising a firmware configured to execute the following operation: performing a recording operation onto a rewritable optical recording medium with a recording speed selected from one of a plurality of recording speeds for an one-time optical recording medium; wherein the recording layer of the rewritable optical recording medium comprises at least four elements from Ge, In, Sb, Te, and Sn, wherein the component proportion of Sb/Te is ranged from 3 to 8, and the thickness of the recording layer is ranged from 3 nm to 25 nm.

## Claims

### Claim 1

A recording apparatus characterized in that comprising a firmware configured to execute the following operation:
performing a recording operation onto a rewritable optical recording medium with a recording speed selected from one of a plurality of recording speeds for an one-time optical recording medium;
wherein the recording layer of the rewritable optical recording medium comprises at least four elements from Ge, In, Sb, Te, and Sn, wherein the component proportion of Sb/Te is ranged from 3 to 8, and the thickness of the recording layer is ranged from 3 nm to 25 mn.

### Claim 2 (depends on 1)

A recording apparatus according to claim 1, wherein the recording speed is the highest speed.

### Claim 3 (depends on 1)

A recording apparatus according to claim 1, wherein the thickness of the recording layer is 12 nm.

### Claim 4

A recording method characterized in that:
performing a recording operation onto a rewritable optical recording medium with a recording speed selected from one of a plurality of recording speeds for an one-time optical recording medium;
wherein the recording layer of the rewritable optical recording medium comprises at least four elements from Ge, In, Sb, Te, and Sn, wherein the component proportion of Sb/Te is ranged from 3 to 8, and the thickness of the recording layer is ranged from 3 nm to 25 mn.

### Claim 5 (depends on 4)

A recording method according to claim 4, wherein the recording speed is the highest speed.

### Claim 6 (depends on 4)

A recording method according to claim 4, wherein the thickness of the recording layer is 12 nm.