29
Disc
CD-R
CD-RW
Characteristic
CD-R
CD-RW
External diameter
ø120mm
ø120mm
Internal diameter
ø15mm
ø15mm
Dimensions
Thickness
1.2mm
1.2mm
Recording area (User area)
ø50 to 116mm
ø50 to 116mm
Time
80min.
*1
74min.
74min.
Capacity
700MB
650MB
650MB
Recording
capacity
Linear speed
1.2m/s
1.2m/s
1.2m/s
Track pitch
1.6 ± 0.1µm
1.6 ± 0.1µm
Substrate material
Polycarbonate
Polycarbonate
Recording material
Organic pigment
(phthalocya-nine)
/ Au or Ag lamination
(Organic protective layer
attached)
Ag-In-Sb-Te phase change
recording material
Reflectance (R to p)
65% or more
15 to 20%
Eccentricity
70µm or less
70µm or less
Maximum camber angle
0.4° or less
0.4° or less
Recommended recording power
6 to 7mW(at :785nm, NA:0.5)
8 to 14mW(at :785nm, NA:0.5)
Playback power
1mW or less
1mW or less
Playback stability
10
6
times or more
(Playback power = 0.7mW)
10
6
times or more
(Playback power = 1mW)
-5 to 55°C
10 to 40°C
Environment for use
5 to 95%RH
10 to 80%RH
Storage life
100 years or more
(5 to 25°C, 5 to 60%RH
Avoiding direct sunlight)
100 years or more
(5 to 25°, 5 to 60%RH)
Number of rewrites
------------
1,000 times or more
*
The above specifications are for Ricoh CD-R and CD-RW discs
*
Recommended Discs
CD-R (74min.) :
Ricoh, Taiyo Yuden, Mitsubishi Chemical, Mitsui Chemicals and TDK discs
CD-R (80min.)
*1
:
Ricoh, Taiyo Yuden and TDK discs
CD-RW :
Rioch and Mitsubishi Chemical discs
For the latest disc information, please refer to Ricoh's website.