BS ISO/IEC 10885:1993

1. Scope
2. Conformance
3. Normative reference
4. Definitions
4.1 General: caddy; case; optical disk; optical disk
        carrier; optical disk cartridge; perimeter ring
4.2 Disk: air-sandwich disk; clamping zone;
        coversheet; disk reference plane; entrance
        surface; hub; protective layer; recording layer;
        spindle; tilt
4.3 Optics: actual write power; baseline reflectance;
        birefringence; cross-talk level; mark; narrow
        band signal-to-noise ratio; noise floor; optical
        retardation; read power; write power
4.4 Format: band; format; track; track pitch
4.5 Errors: cyclic redundancy check (CRC); defect
        management; error correction code (ECC); error
        detection and correction (EDAC); interleaving;
        Reed-Solomon code
5. Abbreviations and acronyms
6. Conventions
7. General description
8. Environment
8.1 Testing environment
8.2 Operating environment
8.3 Storage environment
8.3.1 Short-term storage
8.3.2 Long-term storage
8.3.3 Transportation
9. Safety requirements
9.1 Safety
9.2 Flammability
10. Dimensional and mechanical characteristics of the
        caddy
10.1 General
10.2 Caddy drawings
10.3 Relationship of sides and interface with carrier
10.3.1 Relationship of sides
10.3.2 Interface with carrier
10.3.3 Write protect features (see figure 4)
10.4 Materials
10.5 Mass
10.6 Caddy dimensions
10.6.1 Overall dimensions of the caddy
10.6.2 Opening force of the caddy door
10.6.3 Location of the caddy window
10.6.4 Caddy write protect tabs
10.6.5 Caddy autoload drive surfaces
11. Dimensional and mechanical characteristics of
        the carrier
11.1 General
11.2 Carrier drawings
11.3 Sides, reference axes and reference planes
11.3.1 Relationship between Side A and Side B
11.3.2 Reference axes and reference features
11.4 Materials
11.5 Mass
11.6 Location of the optical disk centre in the carrier
11.7 Overall dimensions of the carrier
11.8 Cutouts
11.9 Carrier latch points and latch actuation force
11.10 Carrier guide rails and carrier thickness
11.11 Carrier write protect hole
11.12 Carrier Side A or Side B sensor hole
11.13 Carrier disk type sensor notches
11.14 Carrier location within the caddy
11.15 Carrier locator pin slot characteristics and
        location within the caddy
11.16 Carrier latch point location when the carrier
        is inside the caddy
11.17 Carrier latch release hole locations
11.18 Carrier latch release hole locations for
        unlatched carrier
11.19 Location of carrier locator pin slots
11.20 Carrier label location
11.21 Carrier label
11.22 Carrier label characteristics
12. Dimensional and physical characteristics of the
        disk
12.1 General
12.1.1 Protective layer
12.1.2 Unobstructed access
12.2 Disk drawings
12.3 Sides, reference axes, reference plane
12.3.1 Relationship of Sides A and B
12.3.2 Reference axes and reference planes
12.4 Dimensions of the disk
12.4.1 Outside diameter
12.4.2 Outside diameter of the recording zone
12.4.3 Inside diameter of the recording zone
12.4.4 Outside diameter of the clamping zone
12.4.5 Inside diameter of the clamping zone
12.4.6 Inner diameter of the optical disk
12.4.7 Optical disk inner diameter roundness
12.4.8 Location of the recording surface
12.4.9 Thickness of the clamping zone
12.4.10 Inner diameter of the chamfer
12.4.11 Inner diameter chamfer angle
12.4.12 Outer diameter of the chamfer
12.4.13 Chamfer angle of the outer diameter
12.4.14 Dimensional characteristics of the protective
        layers
12.5 Mass
12.6 Moment of inertia
12.7 Imbalance
12.8 Apparent axial runout
12.9 Residual focus error
13. Handling requirements
13.1 Drop test
13.2 Dead weight strength
13.3 Exposure to ambient light
14. Interface between disk and drive
14.1 Clamping technique
14.2 Radial positioning
14.3 Reference surface
14.4 Clamping force
15. Characteristics of the protective layer
15.1 General
15.2 Characteristics of a 90 mu m thick protective
        layer
15.2.1 Index of refraction
15.2.2 Thickness
15.2.3 Optical characteristics
15.2.4 Tilt
15.3 Characteristics of a 1,2 mm thick protective
        layer
15.3.1 Index of refraction
15.3.2 Thickness
15.3.3 Optical characteristics
15.3.4 Tilt
16. Characteristics of the recording layer
16.1 Test conditions
16.1.1 General
16.1.2 Read conditions
16.1.3 Write conditions
16.2 Baseline reflectance
16.2.1 General
16.2.2 Actual value
16.2.3 Requirement
16.3 Write power requirement
16.4 Read power requirements
16.5 Prerecorded marks
16.6 Data written in user area
16.6.1 Reflectivity characteristics of written marks
16.6.2 Signals
16.6.3 Narrow-band signal-to-noise ratio
16.6.4 Cross-talk
17. Characteristics of the data organization on the
        disk
17.1 General description
17.2 Band organization
17.2.1 Recordable area in each band
17.2.2 Track shape in each band
17.2.3 Direction of rotation for each side
17.2.4 Track pitch
17.2.5 Radial eccentricity of pre-formatted information
17.2.6 Band numbers
17.2.7 Pre-formatted information in-track bit spacing
17.2.8 Rotational velocity
17.2.9 Number of sectors in each band
17.3 Formatted zones
17.3.1 Organization of the sectors in each band
17.3.2 Organization of the usable sectors
17.3.3 User sector organization
17.4 Requirements for interchange
17.4.1 Requirements for reading
17.4.2 Requirements for writing
18. Format
18.1 Track layout
18.1.1 Tracking
18.1.2 Tracking pads
18.1.3 Tracking pad tolerances
18.1.4 Tracking push-pull ratio
18.1.5 Focus
18.1.6 Recorded characteristics
18.2 Leader and manufacturing test sectors
18.3 Disk Identification Sector
18.4 Sectors of the bad sector map
18.5 Disk drive supplemental data
18.6 User supplemental data
18.7 Write power calibration and auto-rewrite sectors
18.8 User sector format
18.8.1 User sector header
18.8.2 User data field preamble and pre-formatted
        tracking pad
18.8.3 Pre-formatted tracking pads
18.8.4 User data field
18.8.5 Error detection and correction (EDAC)
18.8.6 Interface sector gap
18.9 Sectors following the user sectors in each band
18.10 Coding method
Numerous annexes

Specifies the characteristics of 356 mm optical disk cartridges of the type provided for information to be written once and read many times. Coverage includes conventions, environment, safety requirements, handling requirements, format, and interface between disk and drive. Also includes detailed annexes.

This International Standard specifies the characteristics of 356 mm optical disk cartridges of the type providing for information to be written once and read many times.

ISO 10885 specifies

• definitions of essential concepts,

• the environment in which the characteristics shall be tested,

• the environments in which the cartridge shall be operated and stored,

• the mechanical, physical and dimensional characteristics of the case and of the optical disk,

• the optical characteristics and the recording characteristics for recording the information once and for reading it many times, so as to provide physical interchangeability between data processing systems.

• the format for the physical disposition of the tracks and sectors, the error correction codes, the modulation methods used for recording and the quality of the recorded signals.

Together with a standard for volume and file structure, ISO/IEC 10885 provides for full data interchange between data processing systems.