ISO/IEC 10885:1993
(Main)Information technology — 356 mm optical disk cartridge for information interchange — Write once
Information technology — 356 mm optical disk cartridge for information interchange — Write once
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.
Technologies de l'information — Cartouches de disques optiques de 356 mm pour l'échange d'informations — Cartouches non réinscriptibles
General Information
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Standards Content (Sample)
INTERNATIONAL
ISO/IEC
STANDARD
First edition
1993-l I-01
Information technology - 356 mm optical
disk cartridge for information
interchange - Write once
- Cartouches de disques optiques de
Technologies de Yin formation
356 mm pour I’khange d’informations - Cartouches non M’nscrip tibles
Reference number
ISO/I EC 10885: 1993(E)
Contents
Page
1 Scope
2 Conformance
3 Normative reference
Definitions
General
4.1
4.1.1 caddy.
4.1.2 case
4.1.3 optical disk
4.1.4 optical disk carrier
4.1.5 optical disk cartridge
4.1.6 perimeter ring
4.2 Disk
4.2.1 air-sandwich disk
4.2.2 clamping zone
4.2.3 coversheet
disk reference plane
4.2.4
entrance surface
4.2.5
hub
4.2.6
4.2.7 protective layer
recording layer
4.2.8
spindle
4.2.9
tilt
4.2.10
4.3 Optics
4.3.1 actual write power
baseline reflectance
4.3.2
birefringence
4.3.3
4.3.4 cross-talk level
4.3.5 mark
4.3.6 narrow band signal-to-noise ratio
4.3.7 noise floor
4.3.8 optical retardation
4.3.9 read power
4.3.10 write power
0 ISO/IEC 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm,
without permission in writing from the publisher.
ISO/IEC Copyright Office l Case postale 56 l CH-1211 Genke 20 l Switzerland
Printed in Switzerland
ii
Format
4.4
4.4.1 band
4.4.2 format
4.4.3 track
4.4.4 track pitch
Errors
4.5
4.5.1 cyclic redundancy check (CRC)
4.5.2 defect management
error correction code (ECC)
4.5.3
error detection and correction (EDAC)
4.5.4
interleaving
4.5.5
Reed-Solomon code
4.5.6
Abbreviations and acronyms
Conventions
General description
Environment
81 . Testing environment
82 . Operating environment
Storage environment
83 .
8.3.1 Short-term storage
8.3.2 Long-term storage
8.3.3 Transportation
Safety requirements
Safety
91 .
Flammabi Ii ty
92 .
Dimensional and mechanical characteristics of the caddy
10.1 General
10.2 Caddy drawings
Relationship of sides and interface with carrier
10.3
Relationship of sides
10.3.1
Interface with carrier
10.3.2
Write protect features (see figure 4)
10.3.3
10.4 Materials
10.5 Mass
10.6 Caddy dimensions
Overall dimensions of the caddy
10.6.1
Opening force of the caddy door
10.6.2
10.6.3 Location of the caddy window
Caddy write protect tabs
10.6.4
. . .
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
Reference axes and reference features 18
11.3.2
11.4 Materials
11.5 Mass
11.6 Location of the optical disk centre in the carrier
11.7 Overall dimensions of the carrier
cutouts 19
11.8
Il.9 Carrier latch points and latch actuation force
Carrier guide rails and carrier thickness
11.10
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
location within the ca
11.15 Carrier locator pin slot characteristics an
11.16 Carrier latch point location when the carrier is inside the cad
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
Carrier label characteristics
11.22
12 Dimensional and physical characteristics of the disk
12.1 General
Protective layer
12.1.1
Unobstructed access
12.1.2
12.2 Disk drawings
12.3 Sides, reference axes, reference plane
Relationship of Sides A and B
12.3.1
Reference axes and reference planes
12.3.2
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 lnside 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
Dimensional characteristics of the protective layers 40
12.4.14
12.5 Mass
12.6 Moment of inertia
12.7 Imbalance
Apparent axial runout
12.8
12.9 Residual focus error
Handling requirements
13.1 Drop test
13.2 Dead weight strength
Exposure to ambient light
13.3
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 pm thick protective layer
15.2.1 Index of refraction
15.2.2 Thickness
Optical characteristics
15.2.3
Tilt
15.2.4
15.3 Characteristics of a 1,2 mm thick protective layer
Index of refraction
15.3.1
Thickness
15.3.2
15.3.3 Optical characteristics
15.3.4 Tilt
Characteristics of the recording layer
16.1 Test conditions
16.1.1 General
16.1.2 Read conditions
Write conditions
16.1.3
16.2 Baseline reflectance
16.2.1 General
V
ISO/IEC10885:1993(E)
Actual value
16.2.2
Requirement
16.2.3
16.3 Write power requirement
16.4 Read power requirement
Prerecorded marks
16.5
Data written in user area
16.6
Reflectivity characteristics of written marks
16.6.1
Signals
16.6.2
Narrow-band signal-to-noise ratio
16.6.3
Cross-talk
16.6.4
Characteristics of the data organization on the disk
17.1 General description
Band organization
17.2
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
Radial eccentricity of pre-formatted information
17.2.5
Band numbers
17.2.6
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
Organization of the sectors in each band
17.3.1
Organization of the usable sectors
17.3.2
User sector organization
17.3.3
17.4 Requirements for interchange
17.4.1 Requirements for reading
17.4.2 Requirements for writing
Format
Track layout
18.1
Tracking
18.1.1
pads
18.1.2 Tracking
18.1.3 Tracking pad toierances
18.1.4 Tracking push-pull ratio
18.1.5 Focus
18.1.6 Recorded characteristics
Leader and manufacturing test sectors
18.2
Disk Identification Sector
18.3
Sectors of the bad sector map
18.4
18.5 Disk drive supplemental data
18.6 User supplemental data
vi
18.7 Write power calibration and auto-rewrite sectors 61
18.8 User sector format
User sector header 61
18.8.1
User data field preamble and pre-formatted tracking pad 62
18.8.2
18.8,3 Pre-formatted tracking pads
User data field 62
18.8.4
18.8.5 Error detection and correction (EDAC) 63
18.8.6 Interface sector gap 63
18.9 Sectors following the user sectors in each band 64
18.10 Coding method 64
Annexes
A - Definition of air cleanliness of class 100 000
B - Recommendation for transportation
C - Mechanical test method
D - Imbalance test method
E - Apparent axial runout test method
F - Residual focus error test method
G - Drop test method
H - Dead weight strength test method
J - Double-pass retardation test method
K - Signal characteristics test method
1, - 0ptical disk write power test method
M - Read power test method
Narrow-band signal-to-noise ratio test method
N-
P - Cross-talk test method
Q - Radial runout test method
R - Residual tracking error signal test method
vii
Foreword
IS0 (the International Organization for Standardization) and IEC (the Inter-
national Electrotechnical Commission) form the specialized system for
worldwide standardization. National bodies that are members of IS0 or IEC
participate in the development of International Standards through technical
committees established by the respective organization to deal with particular
fields of technical activity. IS0 and IEC technical committees collaborate in
fields of mutual interest. Other international organizations, governmental and
non-governmental, in liaison with IS0 and IEC, also take part in the work.
In the field of information technology, IS0 and IEC have established a joint
technical committee, ISO/IEC JTC 1. Draft International Standards adopted by
the joint technical committee are circulated to national bodies for voting. Publi-
cation as an International Standard requires approval by at least 75 % of the
national bodies casting a vote.
International Standard ISO/IEC 10885 was prepared by Joint Technical Com-
mittee ISO/IEC JTC 1, Information technology, Sub-Committee SC 23, Optical
disk cartridges for information interchange.
Annexes A, C, D, E, F, G, H, J, K, L, M, N, P, Q and R form an integral part of
this International Standard. Annex B is for information only.
. . .
Vlll
INTERNATIONAL STANDARD ISO/IEC 10885:1993(E)
356 mm optical disk cartridge for
Information technology -
Write once
information interchange -
1 scope
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. _
IS0 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 pro-
cessing 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, lSO/IEC 10885 provides for full data
interchange between data processing systems.
2 Conformance
A 356 mm optical disk cartridge is in conformance with this International Standard if it meets all
the mandatory requirements herein.
Normative reference
through reference in this text, constitute
The following standard contains provisions which,
provisions of this International Standard. At the time of publication, the edition indicated was
valid. All standards are subject to revision, and parties to agreements based on this International
Standard are encouraged to investigate the possibility of applying the most recent edition of the
standard listed below. Members of IEC and IS0 maintain registers of currently valid international
standards.
1SOA EC 646: 199 1 Information Technology - IS0 7-bit coded character set for information
interchange.
4 Definitions
For the purposes of this International Standard, the following definitions apply.
4.1
General
4.1.1 caddy: An enclosure which protects the optical disk and carrier from contamination and
damage due to physical handling. The caddy may include space for physical labelling, write-inhibit
features and provisions for automatic handling.
4.1.2 case: The housing for an optical disk, that protects the disk and facilitates disk interchange.
4.1 .3 optical disk: A disk containing information in the form of marks in a recording layer that can
be read with an optical beam.
4.1.4 optical disk carrier: A framework which captures and holds an optical disk except when the
optical disk is mounted on the disk drive spindle. The carrier provides the interface with the equipment
for handling of an optical disk. The carrier and the optical disk are permanently mated and as a sub-
assembly interchangeable with any caddy, disk drive or library equipment.
4.1.5 optical disk cartridge: A device consisting of a case containing an optical disk.
4.1.6 perimeter ring: An outside diameter feature of the optical disk to provide an interface to the
carrier and to handling devices of an optical disk drive.
4.2
Disk
4.2.1 air-sand with disk: A disk which consists at least of a substrate with a recording layer and a
cover separated by two annular spaces provid ing an enclosed air gap for the recording layer.
The annular part of the disk within which the clamping force is applied by
4.2.2 clamping
the clamping device.
4.2.3 coversheet: A transparent covering placed at a pre-determined distance from the recording
surface to protect the optical disk from surface contamination and to cause surface contaminants to be
out of focus.
4.2.4 disk reference plane: A plane defined by the perfectly flat an nular surface of an ideal spindle
which contacts the clamp ing zone of the disk and which is normal to the axis of rotation.
4.2.5 entrance surface: The disk surface onto which the optical beam first impinges.
4.2.6 hub: The central feature on the disk which interacts with the spindle of the disk drive to
provide radial centring and clamping force and, in some cases, axial location.
4.2.7 protective layer: A transparent layer on the disk provided for mechanical protection of the
recording layer, through which the optical beam accesses the recording layer. A suitable substrate can
simultaneously function as the protective layer.
A layer of the disk on or in which data is written during manufacture and/or
4.2.8 recording layer:
use.
4.2.9 spindle: The part of the disk drive which contacts the disk and/or the hub.
with the normal to the disk
4.2.10 tilt: The angle which the normal t
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