1. Specification of CD-R Raw Material
2. Conditions
3. Disc Physical Specifications
4. Optical Requirements
5. Mechanical Characteristics
6. Characteristics for Recording & Playback
7. System Control Signal (Unrecorded disc)
8. System Control Signal(Recorded disc)
9. Reliability

 

 

CD-R Specifications

1. Specification of CD-R Raw Material

Categories Item Specification

Polycarbonate

Viscosity ratio (24.8~~25.2 °C )

1.195 ± 0.04

Silver

Purity

99.99%

Phthalocyanine

Appearance

Green powder / lumps

Water content

0.3%

λ max

712 - 715 nm

Lacquer(Acrylic)

Viscosity (cps/25 °C)

30 ± 5

Hardness

H

Adhesion

80/100
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2. Conditions

Characteristic

Specification

Remarks

4-1

Condition for testing
Ambient temperature
Relative humidity
Air pressure

15 °C to 35 °C
45% to 75%
86 kPa to 106 kPa

No condensation may Occur on the disc

4-2

Operating Conditions during recording and reading
Temperature range
Absolute humidity
Relative humidity

-5 °C to 55 °C
0.5 to 30 g/m
5% to 95%

No condensation may Occur on the disc

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3. Disc Physical Specifications

Characteristic

Specification

Remarks

5-1

Outer diameter
Outer diameter
Edge shape
Disc weight
Disc unbalance


120 ± 0.3 mm
free from burrs
14 ~ 20 g
< 0.04 N


Measured at 23 ± 2 °C
And 50 ± 5% RH

5-2

Center hole
Diameter
Shape of center hole
Edge shape


15+0.1/-0 mm
Cylindrical
Burrs on information side
of the disc are permitted


Measured at 23 ± 2 °C
And 50 ± 5% RH

5-3

Thickness

1.2+0.3/-0.1 mm

Include protective layer, Printing and excluding Stack ring

5-4

Clamping area
Clamping area on Side of disc
Thickness of clamping area


26~33 mm
1.2+0.3/-0.1 mm

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4. Optical Requirements

Characteristic

Specification

Remarks

6-1

Thickness of clear disc substrate

1.2 ± 0.1 mm

Exclude protective layer and Printing

6-2

Refractive index of clear substrate

1.55 ± 0.1

6-3

Max birefrigence of clear substrate

70 nm (632.8nm)

Parallel light,
Double pass
Test range to 58.5 mm

6-4

Reflection and substrate
Transmission(double pass)


Rtop 60%

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5. Mechanical Characteristics

Characteristic

Specification

Remarks

7-1

Vertical
Deflection (max)


± 0.2 mm ( ± 0.4deg)


Test range to 58.5 mm

7-2

Radial
Eccentricity of track


40m

7-3

Tilt

± 0.4deg

Test range to 58.5 mm

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6. Characteristics for Recording & Playback

Characteristic

Specification

Remarks

8-1

Rotation
Direction of rotation
Scanning velocity


CCW
1.20~1.40 m/sec

8-2

Read out system
Read out mode
Track shape

In reflection , through
Transparent discs
One continuos spiral

8-3

Sensitive layer
Polarity of modulation
CNR for periodic effects in
The range from 200-720 kHz


High to low
47dB


In the Information area
BW=10kHz

8-4

Recording conditions
Recording strategy

Optimum recording power for disc


--in groove
--laser modulation
Po determined by OPC

8-5

Reading condition
Reading power


0.7mw

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7. System Control Signal (Unrecorded disc)

Characteristic

Specification

Remarks

9-1

Radial tracking signals
Max. variation of Push-Pull
Amplitude
Radial Contrast
Normalized Push-Pull Ratio


± 15%

>+0.05
0.5~1.0


On one disc

9-2

Tangential tracking signals
Locking frequency for the
Groove wobble
CNR of wobble


22.05 kHz

>35dB

BW=1kHz

9-3

Time encoding
Wobble encoding
ATER
Max. number of successive
Erroneous ATIP frames


ATIP
<10%
3 frames



Averaged over any 10 seconds

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8. System Control Signal(Recorded disc)

Characteristic

Specification

Remarks

10-1

Radial tracking signals
Push-Pull magnitude
Max. variation of Push-Pull
Amplitude
Radial Contrast


0.08~0.12
± 15%
0.3~0.6

On one disc

10-2

Tangential tracking signals
Locking frequency for the
Groove wobble
CNR of wobble


22.05 kHz

>26dB

BW=1kHz

10-3

HF signal
I3/Itop
I11/Itop
Average Block Error Rate
E32
Cross-talk
Jitter


0.3~0.7
0.6~1.0
<50cps
0
<50%
<35ns

Averaged over any 10
seconds

10-4

Asymmetry

-15% asym +10%

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9. Reliability

Characteristic

Specification

Criteria

Remarks

11-1

Dry Heat Test
Temperature

Relative Humidity
Storage Time


55 °C

max. 50% at 35 °C
96 hrs


Should meet the Requirements

Mentioned in these specification


IEC68-2-2 Ba

11-2

Cyclic Damp Heat Test
Temperature
Temperature

Relative Humidity
Cycles
Cycle Time


40 °C max.
25 °C min.
95%
6
12 hrs+12 hrs


Should meet the Requirements
Mentioned in these specification


IEC68-2-30 Db

11-3

Light Fastness

Black Panel
Temperature
Relative Humidity
Xenon Light Expose

 

<40 °C
70~80%
4 Mlux*Hr

 

Ave. BLER<60cps
(Averaged over any 10 seconds)

 

ISO-105-B02

11-4

Heat Test

Temperature
Relative Humidity
Storage Time

 

70 °C
85%
96 hrs

 

Ave. BLER<60cps
(Averaged over any 10 seconds)

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