01_LAYOUT_GB 22-11-2000 09:21 Pagina 19

CDRWAPPENDIXIX

(CONT )

ENGLISH

Basic principles of CD-R and -RW media

A blank CD-R or -RW disc is divided into areas (see figure below). This differs from a prerecorded disc by the additional CD-R/RW area, which lies in front of the lead-in area.

Hole

Additional CD-R area

 

Lead-in area

Program area

Lead-out track

A CROSS-SECTION THROUGH A CD-R DISC

The disc comprises different layers.

Protective area

Reflective layer (gold)

Recording layer

Plastic substrate

Preformed tracks

•Transparent plastics material (the same as conventional CD’s) is used as the substrate.

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