ISO/IEC 15485:1997

Information technology — Data interchange on 120 mm optical disk cartridges using phase change PD format — Capacity: 650 Mbytes per cartridge

Technologies de l'information — Échange de données sur cartouches de disque optique de 120 mm de diamètre utilisant un format PD de changement de phase — Capacité: 650 Mbytes par cartouche

General Information

• Status: Withdrawn
• Publication Date: 26-Nov-1997
• Withdrawal Date: 26-Nov-1997
• ICS: 35.220.30 - Optical storage devices
• Technical Committee: ISO/IEC JTC 1/SC 23 - Digitally recorded media for information interchange and storage
• Drafting Committee: ISO/IEC JTC 1/SC 23 - Digitally recorded media for information interchange and storage
• Current Stage: 9599 - Withdrawal of International Standard
• Start Date: 17-Nov-2021
• Completion Date: 12-Feb-2026

Standards Content (Sample)

ISOAEC
INTERNATIONAL
STANDARD
First edition
1997-12-15
Information technology - Data interchange
on 120 mm Optical disk cartridges using
Phase Change PD format - Capacity:
650 Mbytes per cartridge
- kkhange de donnees sur carfouches de
Technologies de I’informa tion
disque optique de 120 mm de diamefre utiiisant un format PD de
- Capacitk 650 Mbytes par carfouche
changement de Phase
Reference number
ISO/1 EC 15485: 1997(E)
OISO/IEC
Conte&
Section 1 - General
1 Scope
2 Conformance
2.1 Optical disk cartridge
2.2 Generating System
2.3 Receiving System
2.4 Compatibility Statement
3 Normative reference
4 Definitions
4.1 addressable track
4.2 band
4.3 case
4.4 Channel bit
4.5 Clamping Zone
4.6 control track
4.7 Cyclic Redundancy Check (CRC)
4.8 defect management
4.9 disk reference plane
4.10 embossed mark
4.11 entrance surface
4.12 Error Correction Code (ECC)
4.13 field
4.14 format
4.15 interleaving
4.16 land and groove
4.17 mark
4.18 one-beam overwrite
4.19 Optical disk
4.20 Optical disk cartridge (ODC)
4.21 Phase Change (PC)
4.22 physical track
4.23 pitch
4.24 polarization
4.25 read power
4.26 recording layer
4.27 Reed-Solomon code
4.28 rewritable disk
4.29 sector
0 ISO/IEC 1997
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm,
without Permission in writing from the publisher.
ISO/IEC Copyright Office * Case Postale 56 * CH-121 1 Geneve 20 * Switzerland
Printed in Switzerland
ii
ISO/IEC 15485: 1997 (Ej
OISO/IEC
4.30 spindle
4.31 Substrate
4.32 write once disk
4.33 ZCAV
4.34 zone
5 Conventions and notations
5.1 Representation of numbers
5.2 Names
6 List of acronyms
7 General description of the Optical disk cartridge
8 General requirements
8.1 Environments
S.l.1 Test environment
8.1.2 Operating environment
8.1.3 Storage environment
8.1.4 Transportation
8.2 Temperature shock
8.3 Safety requirements
8.4 Flammability
9 Reference Drive
92 Optical System
9.2 Optical beam
9.3 Read channel
9.4 Tracking
9.5 Rotation of the disk
Section 2 - Mechanical and physical characteristics
10 Dimensional and physical characteristics of the case
10.1 General description of the case
10.2 Reference planes of the case
10.3 Dimensions of the case
10.3.1 Overall dimensions
10.3.2 Location hole
10.3.3 Alignment hole
10.3.4 Reference surfaces
10.3.5 Detents
10.3.6 Write inhibit hole
10.3.7 Media Sensor area
10.3.8 Spindle and head windows
10.3.9 Shutter and shutter opener
10.3.10 Mis-insertion protection
10.3.11 Gripper Slots
10.3.12 Label area
10.4 Mechanical characteristics
10.4.1 Material
10.4.2 Mass
10.4.3 Edge distortion
10.4.4 Compliance
. . .
OISO/IEC
10.4.5 Shutter opening forte
11 Dimensional, mechanical and physical characteristics of the disk
11.1 General description of the disk
11.2 Reference axis and plane of the disk
11.3 Dimensions of the disk
11.3.1 Clamping Zone
11.3.2 Clamping forte
11.4 Mechanical characteristics
11.4.1 Material
11.4.2 Mass
11.4.3 Moment of inertia
11.4.4 Imbalance
11.4.5 Axial deflection
11.4.6 Axial acceleration
11.4.7 Radial runout
11.4.8 Radial acceleration
11.4.9 Tilt
11.5 Optical characteristics
11.5.1 Index of refraction
11.5.2 Thickness of the Substrate
11.5.3 Birefringence
11.5.4 Reflectance
12 Interface between cartridge and drive
12.1 Capture cylinder
12.2 Disk Position in operating condition
Section 3 - Format of information
13 Geometry of physical tracks
13.1 Physical track shape
13.2 Direction of rotation
13.3 Physical track pitch
13.4 Addressable track number
14 Format of the Information Zone
14.1 General description of the Information Zone
14.2 Division of the Information Zone
14.2.1 Initial Zone
14.2.2 Test Zones for drives and manufacturers
14.2.3 Test Zones for servo
14.2.4 Control Zone
14.2.5 Data Zone
15 Addressable track format
15.1 Addressable track layout
15.2 Glock frequencies and periods
15.3 Radial alignment
15.4 Seetor number
16 Seetor format
16.1 Seetor layout
iv
OISOIIEC
16.2 Seetor Mark (SM)
16.3 VFO fields
16.4 Address Mark (AM)
16.5 ID fields
16.6 Postamble 1 (PAI)
16.7 Offset Detection Field (ODF)
16.8 Gap
16.9 Sync
16.10 Data field
16.10.1 User data bytes
16.10.2 CRC and ECC bytes
16.10.3 Resync bytes
16.10.4 Postamble 2 (PA2)
16.11 Buffer field
17 Recording code
18 Format of the Data Zone
18.1 Buffer tracks in the Data Zone
18.2 Defect Management Areas (DMAs)
18.3 Disk Definition Structure (DDS)
18.4 Defect Management Seetor (DMS)
18.5 Working Defect List (WDL)
18.6 Partitioning
19 Defect management
19.1 Initialization of the disk
19.2 Certification
19.2.1 Slipping Algorithm
19.2.2 Linear Replacement Algorithm
19.3 Disks not certified
19.4 Wri te procedure
19.4.1 Rewritable disk
19.4.2 Write once disk
19.5 Primary Defect List (PDL)
19.6 Secondary Defect List (SDL) and Working Defect List (WDL)
19.6.1 Rewritable disk
19.6.2 Write once disk
Section 4 - Characteristics of embossed information
20 Method of testing
20.1 Environment
20.2 Reference Drive
20.2.1 Optics and mechanics
20.2.2 Read power
20.2.3 Read channels
20.2.4 Tracking
20.3 Definition of Signals
21 Signals from grooves
21.1 Push-pull Signal
OISOLIEC
ISOAEC 15485:1997 (E)
21.2 Divided push-pull Signal
21.3 On-track Signal
21.4 Phase depth
21.5 Track location
22 Signals from Headers
22.1 Seetor Mark
22.2 VFOI and VF02
22.3 Address Mark, ID field and Postamble
23 Signals fi-om embossed Recording fields
Section 5 - Characteristics of the recording layer
24 Method of testing
24.1 Environment
24.2 Reference Drive
24.2.1 Optics and mechanics
24.2.2 Read power
24.2.3 Read channel
24.2.4 Tracking
24.3 Write conditions
24.3.1 Write pulse
24.3.2 Write power and pulse width
24.4 Definition of Signals
25 Write characteristics
25.1 Resolution and modulation depth
25.2 Narrow-band signal-to-noise ratio
25.3 Cross-talk
26 Overwrite erasability
Section 6 - Characteristics of user data
27 Method of testing
27.1 Environment
27.2 Reference Drive
27.2.1 Optics and mechanics
power
27.2.2 Read
27.2.3 Read amplifiers
converters
27.2.4 Analog-to-binary
Error correction
27.2.5
27.2.6 Tracking
28 Minimum quality of a sector
28.1 Headers
28.1.1 Seetor Mark
28.1.2 ID fields
28.2 User-written data
28.3 Embossed data
29 Data interchange requirements
29.1 Tracking
ISO/IEC 15485: 1997 (E;
@ISO/IEC
29.2 User-written data 61
29.3 Quality of disk
Annexes
A - Edge distortion test 62
B - Compliance test 63
C - CRC for ID fields
D - Format of the Data field of a sector 66
E - Contents of the Control Zone 69
F - Definition of the overwrite pulse 72
G - Air cleanliness class 100 000
H - Position of the cartridge relative to the reference planes 74
J - Relaxation by zones of the requirements for Signals 75
K - Track deviation measurement
L - Guidelines for seetor- replacement 80
M - Derivation of the operating climatic environment 81
N - Transportation 86
P - Office environment 87
Q - Measurement of birefringence
OISCYIEC
PSOIIEC 154851997 (E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the
National bodies that are members of ISO or IEC participate in the
specialized System for worldwide standardization.
development of International Standards through technical committees established by the respective organization to deal with
particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other
international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work.
In the field of information technology, ISO 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. Publication as an
International Standard recguires approval by at least 75 % of the national bodies casting a vote.
International Standard ISOIIEC 15485 was prepared by ECMA (as ECMA-240) and was adopted, under a special “fast-track
procedure ”, by Joint Technical Committee ISOKIEC JTC 1, Information technology, in parallel with its approval by national
bodies of ISO and IEC.
Annexes A to J form an integral part of this International Standard. Annexes K to Q are for information only.
. . .
Vlll
OISOLIEC ISO/IEC 154851997 (E)
Introduction
This International Standard specifies the characteristics of 120 mm Optical Disk Cartridges (ODCs) with a capacity of 650
Mbytes using Phase Change technology. The format for the information on the disk is known as the PD format.
The 120 mm ODC has a large degree of commonality with CD-ROM so as to allow drive manufacturers to develop drives
which tan offer read compatibility with CD-ROM as defined in ISO/IEC 10149.
This International Standard specifies two types of ODCs (Type RAN and Type WORM) both of which are intended for use in
dual-function Optical disk drives with the capacility to handle both the 120 mm ODCs and CD-ROM disks such as those
conforming to ISOIIEC 10149.
ix
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ISO/IEC 154851997 (E)
INTERNATIONAL STANDARD 0 ISO/IEC
Information technology - Date interchange on 120 mm Optical disk cartridges using
Phase Change PD format - Capacity: 650 Mbytes per cartridge
Section 1 - General
1 Scope
This International Standard specifies the characteristics of 120 mm Optical Disk Cartridges (ODCs) with a capacity of 650
Mbytes using Phase Change PD format. This present International Standard specifies two related, but different
implernentations of such cartridges, viz.
Provides for data to be written, read and overwritten many times over the whole recording surface of the disk
Type R/w
using the Phase Change recording and read-out method .
Provides for data to be written once and read many times over the whole recording surface of the disk using
Type WORM
the Phase Change recording and read-out method.
Type RAV and Type WORM are also referred to as “rewritable” and “write-once” respectively.
This International Standard specifies
- ehe conditions for conformance testing and the Reference Drive;
- the environments in which the cartridges are to be operated and stored;
- the mechanical and physical characteristics of the cartridge, so as to provide mechanical interchangeability between data
processing Systems;
-
the format of the information on the disk known as the PD format; including the physical disposition of the tracks and
sectors, the error correction Codes, and the modulation method used;
-
the characteristics of the embossed information on the disk;
- the Phase Change recording characteristics of the disk, enabling data processing Systems to write data onto the disk;
- the minimum quality of user-written data on the disk, enabling data processing Systems to read data from the disk.
This International Standard provides for interchange between Optical disk drives. Together with a Standard for volume and file
structure, it provides for full data interchange between data processing Systems.
2 Conformance
21 l Optical disk cartridge
An Optical disk cartridge shall be in conformance with this International Standard if it meets the mandatory requirements
specified herein for its Type.
22 0 Generating System
A generating System shall be in conformance with this International Standard if the ODC it generates is in accordance with 2.1.
23 l Receiving System
A receiving System shall be in conformance with this International Standard if it is able to handle an ODC according to 2.1.
24 l Compatibility Statement
A Claim of conformance by a generating or receiving System with this International Standard shall include a Statement listing
any other International Optical Disk Cartridge Standard(s) supported. This Statement shall specify the number of the
Standard(s), including, where appropriate, the ODC type(s) and whether support includes reading only or both reading and
writing.
3 Normative reference
The following Standard contains provisions which, through reference in this text, constitute provisions of this International
Standard. At the time of publication, the edition indicated was valid. All Standards are subjected to revision, and Parties to

OISO/IEC
ISO/IEC 15485: 1997 (E)
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 ISO maintain registers of currently valid International Standard.
IEC 950: 199 1, Safety of information technology equipment.
4 Definitions
For the purposes of this International Standard, the following definitions apply.
41 .
addressable track: A continuous group of 64 sectors in which each sector tan be addressed in a linear manner
beginning with sector number 0.
42 l
band: A part of the Data Zone comprising a fixed number of consecutive physical tracks.
43 . case: The housing for an Optical disk, that protects the disk and facilitates disk interchange.
44 l Channel bit: The elements by which the binary values ZERO and ONE are represented on the disk by either a space
or a mark.
NOTE - In this International Standard each input bit is represented by two Channel bits. Their sequence depends on that of the input bits.
45 b Clamping Zone: The annular part of the disk within which the clamping forte is applied by the clamping device.
46 . control track: A track containing the information on media Parameters and format necessary for writing and
reading the remaining tracks of the Optical disk.
47 0 Cyclic Redundancy Check (CRC): A method for detecting errors in data.
defect management: A method for handling the defective areas on the disk.
48 l
49 l disk reference plane: A plane defined by the perfectly flat annular surface of an ideal spindle onto which the
clamping zone of the disk is clamped, and which is normal to the axis of rotation.
4.10 embossed mark: A mark so formed as to be unalterable by Optical means.
4.11 entrance surface: The surface of the disk onto which the Optical beam first impinges.
4.12 Error Correction Code (ECC): An error-detecting code designed to correct certain kinds of errors in data.
4.13 tield: A subdivision of a sector.
4.14 format: The arrangement of information on the disk.
4.15 interleaving: The process of allocating the physical sequence of units of data so as to render the data more immune
to burst errors.
land and groove. A trench-like feature of the disk, applied before the recording of any information, and used to
4.16
define the track location. The groove is located nearer to the entrance surface than the land with which it is paired to
form a track.
4.17 mark: A feature of the recording layer that may take the form of an amorphous Spot, crystalline Spot, a pit, or other
form that tan be sensed by the Optical System. The Pattern of marks represents the data on the disk.
NOTE - Subdivisions of a sector that are named ‘mark’ are not marks in the sense of this definition.

OISO/IEC ISO/IEC 15485:1997 (E)
4.25 read power: The Optical power, incident at the entrance surface of the disk, used when reading.
4.26 recording layer: A layer of the disk on, or in, which data is written during manufacture and/or use.
4.27 Reed-Solomon Code: An error detection and/or correction code for the correction of errors that occur in bursts or
are strongly correlated.
4.28 rewritable disk: An Optical disk in which the data in specified areas tan be rewritten by an Optical beam.
4.29 sector: The smallest addressable part of a track in the Information Zone of a disk that tan be accessed independently
of other addressable parts of the Zone.
4.30 spindle: The part of the disk drive which contacts the disk.
4.31 Substrate: A transparent layer of the disk, provided for mechanical support of the recording layer, through which the
Optical beam accesses the recording layer.
4.32 write once disk: An Optical disk in which the data in specified areas is irreversibly written and read many times by
an Optical beam.
4.33 ZCAV: A disk format requiring Zoned Constant Angular Velocity operations.
4.34 Zone: An annular area of the disk.
Conventions and notations
51 0 Representation of numbers
A measured value is rounded off to the least significant digit of the corresponding specified value. It implies that a specified
value of 1,26 with a positive tolerante of +O,Ol, and a negative tolerante of -0,02 allows a range of measured values fi-om
1,235 to 1,275.
- Letters and digits in parentheses represent numbers in hexadecimal notation. [ i.e. (FO) etc. ]
- The setting of a bit is denoted by ZERO or ONE.
- Numbers in binar-y notation and bit combinations are represented by strings of digits 0 and 1.
- Numbers in binary notation and bit combinations are shown with the most significant bit to the left.
- Negative values of numbers in binary notation are given in TWO ’s complement.
- In each field the data is recorded so that the most significant byte (byte 0) is recorded first. Within each byte the least
significant bit is numbered 0 and is recorded last, the most significant bit (numbered 7 in an g-bit byte) is recorded first.
This Order of recording applies also to the data input of the Error Detection and Correction circuits and to their output.
- Unless otherwise stated, all track numbers refer to addressable tracks.
52 . Names
The names of entities, e.g. specific tracks,fields, etc., are given with a capital.
6 List of acronyms
Address Mark
CRC Cyclic Redundancy Check
DC Direct Current (d.c.)
Disk Definition Structure
DDS
DMA Defect Management Area
DMS Defect Management Seetor
ECC Error Correction Code
ID Identifier
LSB Least Significant Byte
MSB Most Significant Byte
ODC Optical Disk Cartridge
ODF Offset Detection Field
PA Postamble
PC Phase Change
OISO/IEC
ISOLIEC 15485: 1997 (E)
PDL Primary Defect List
Run Length Limited (Code)
RLL(2,7)
rewritable
SDL Secondary Defect List
SM Seetor Mark
VFO Variable Frequency Oscillator
WDL Working Defect List
WORM Write Once Read Many
ZCAV Zoned Constant Angular Velocity
General description of the Optical disk cartridge
The Optical disk cartridge that is the subject of this International Standard consists of a case containing an Optical disk.
The case is a protective enclosure for the disk. It has access windows covered by a shutter. The windows are automatically
uncovered by the drive when the cartridge is inserted into it.
The Optical disk is recordable on one side. In the rewritable disk, data tan be written onto the disk as marks in the form of
amorphous spots in the crystalline recording layer and tan be overwritten on it with a focused Optical beam, using the Phase
Change effect between amorphous and crystalline states. In the write once disk, data tan be irreversibly written onto the disk as
marks in the form of crystalline spots in the amorphous recording layer, using Phase Change effect. The data tan be read with a
focused Optical beam, using Phase Change effect as the reflective differente between amorphous and crystalline states. The
beam accesses the recording layer through the transparent Substrate of the disk.
Part of the disk contains read-only data for the drive in the form of pits embossed by the manufacturer. This data tan be read
using the diffraction of the Optical beam by the embossed pits.
8 General requirements
81 0 Environments
8.1.1 Test environment
The test environrnent is the environment where the air immediately surrounding the Optical disk cartridge has the following
properties:
: 23 “C t 2 “C
temperature
relative humidity : 45 % to 55 %
atmospheric pressure : 60 kPa to 106 kPa
air cleanliness : Class 100 000 (see annex G)
No condensation on or in the Optical disk cartridge shall occur. Before testing, the Optical disk cartridge shall be conditioned in
this environment for 48 h minimum. It is recommended that, before testing, the entrance surface of the Optical disk shall be
cleaned according to the instructions of the manufacturer of the disk.
Unless otherwise stated, all tests and measurements shall be made in this test environment.
Operating environment
8.1.2
This International Standard requires that an Optical disk cartridge which meets all requirements of this International Standard in
the specified test environment provides data interchange over the specified ranges of environmental Parameters in the operating
environment.
The operating environment is the environment where the air immediately surrounding the Optical disk cartridge has the
following properties:
temperature : 5 “C to 55 “C
relative humidity
: 3 % to 85 %
absolute humidity : 1 g/m3 to 30 g/m3
atmospheric pressure : 60kPato 106kPa
temperature gradient : 10 “C/h max.
relative humidity gradient
: 10 %/hmax.
air cleanliness : Office environment (see annex P)

OISO/IEC ISO/IEC 154851997 (E)
No condensation on or in the Optical disk cartridge shall occur. If an Optical disk cartridge has been exposed to conditions
outside those specified in this clause, it shall be acclimatized in an allowed operating environment for at least 2 h before use.
(See also annex M.)
8.1.3 Storage environment
The Optical disk cartridge without any protective enclosure shall not be stored in an environment outside the range allowed for
storage. The storage environment is defined as an environment where the air immediately surrounding the Optical disk cartridge
has the following properties:
temperature : -10 OC to 55 “C
relative humidity : 3 % to 90 %
absolute humidiy : 1 g/m3 to 30 g/m3
atmospheric pressure : 60 kPa to 106 kPa
: 15 “C/h max.
temperature gradient
relative humidity gradient : 10 %/h max.
air cleanliness : Office environment (see annex P)
No condensation on or in the Optical disk cartridge shall occur.
8.1.4 Transportation
This International Standard does not specify requirements for transportation; guidance is given in annex N.
82 . Temperature shock
The Optical disk cartridge shall withstand a temperature shock of up to 20°C when inserted into, or removed from, the drive.
83 l Safety requirements
The cartridge shall satisfy the safety requirements of Standard IEC 950, when used in the intended manner or in any foreseeable
use in an information processing System.
84 . Flammability
The cartridge and, its components shall be made from materials that comply with the flammability class for HB materials, or
better, as specified in Standard IEC 950.
9 Reference Drive
The Reference Drive is a drive of which several critical components have well defined properties and which is used to test
write, read and overwrite Parameters of the disk for conformance to this International Standard. The critical components vary
from test to test. This clause gives an outline of all components; components critical for tests in specific clauses only are
specified in these clauses.
91 . Optical System
The basic set-up of the Optical System of the Reference Drive used for measuring the overwrite and read Parameters are shown
in figure 1. Different components and locations of components are permitted, provided that the Performance remains the same
as that of the set-up in figure 1. The Optical System shall be such that the detected light reflected from the entrance surface of
the disk is minimized so as not to influence the accuracy of the measurements.

OISO/IEC
ISWIEC 15485: 1997 (E)
F
A
- t ’
,
P 1
. .
Y
F Optical disk
A Laser diode
B Collimator lens G Split Photodiode
C Polarizing beam Splitter d.c.-coupled amplifier
H19H2
D Quarter-wave plate Output from Split Photodiode
E Objective lens
Figure 1 - Optical System of the Reference Drive
The combination of polarizing beam Splitter C and a quarter-wave plate D shall separate the entrance Optical beam from a laser
diode A and the reflected Optical beam from an Optical disk F. The beam Splitter C shall have a p-s intensity reflectance ratio of
at least 100.
92 l Optical beam
The focused Optical beam used for writing and reading data shall have the following properties:
+20nm
a) Wavelength (h) 780 nm
- 10nm
b) Wavelength (h) divided by the numerical ld NA = 1,565 Pm t 0,030 Fm
aperture of the objective lens (NA)
c) Filling D/W of the aperture of the objective lens radial 0,75 < D/W < 1,20
D/W < 0,65
tangential
d) Variante of the wavefi-ont of the objective lens Otoh2/180
near the recording layer after passing through an ideal Substrate
e) Polarization Circular
f) Read power see 20.2.2, 24.2.2 and 27.2.2
g) Write power and pulse width see 24.3.2
D is the diameter of the lens aperture and W is the beam diameter of the Gaussian beam where the intensity is l/e2 of the
maximum intensity.
93 l Read channel
One Read channel shall be provided to generate Signals from the marks in the recording layer. This Read channel shall be used
for reading the embossed marks, using the diffraction of the Optical beam by the marks, and be used for reading the user-written
marks, using the Change of reflected intensity of the Optical beam due to the Phase Change effect of the marks. The read
amplifiers after the photo-detectors in the Read channel shall have a flat response within 1 dB from d.c. to 17,7 MHz.

OISO/IEC ISO/IEC 15485: 1997 (E)
94 0 Tracking
The Tracking channel of the drive provides the tracking error Signals to control the servos for the axial and radial tracking of
the Optical beam. The method of generating the axial tracking error is not specified for the Reference Drive. The radial tracking
error is generated by a Split Photodiode detector in the tracking channel. The division of the diode runs parallel to the image of
the physical tracks on the diode.
The requirements for the accuracy with which the focus of the Optical beam must follow the tracks is specified in 20.2.4.
95 . Rotation of the disk
t 0,3 Hz. The direction of rotation
The spindle shall Position the disk as specified in 12.2. It shall rotate the disk at 33,8 Hz
shall be counter-clockwise when viewed from the objective lens.
Section 2 - Mechanical and physical characteristics
10 Dimensional and physical characteristics of the case
10.1 General description of the case (see figure 2a and 2b)
The case is a rigid protective Container of rectangular shape. It has a spindle window on Side A to allow the spindle of the drive
to clamp the disk. Both Side A and Side B of the case have a head window, the one on Side A for the Optical head of the drive,
the other one on Side B for the clamping means. A shutter uncovers the windows upon insertion into the drive, and
automatically covers them upon removal from the drive. The case has features that enable a drive to reject a mis-inserted
cartridge, to inhibit writing, gripper Slots for an autochanger, and detents for autoloading, and for vertical use of the cartridge.
10.2 Reference planes of the case
The dimensions of the case shall be referred to three orthogonal reference planes X, Y and Z. The four reference surfaces Sl to
S4 on Side A of the case shall lie in plane Z when measuring those dimensions of the case in 10.3 which are referenced to this
plane. The intersection of the three planes defines the centre of the location hole. The centre of the alignment hole shall lie at
the intersection of the X and Z planes (see annex H). A dimension of a feature referenced to one of the planes is the shortest
distance from the feature to the plane.
10.3 Dimensions of the case
The dimensions of the case shall be measured in the test environment. The dimensions of the case in an operating environment
tan be estimated from the dimensions specified in this clause.
10.3.1 Overall dimensions (see figure 3)
The total length of the case shall be
L1 = 135,O mm + 0,3 mm
The distance from the top of the case to reference plane X shall be
L2 = 113,O mm + 0,2 mm
The distance from the bottom of the case to reference plane X shall be
L3=22,0mm+O,l mm
The total width of the case shall be
+ 0,O mm
La =124,0 mm
- 0,3 mm
The distance from the left hand side of the case to reference plane Y shall be
+ 0,O mm
L5 = 113,0 mm
- 0,2 mm
The distance from the right hand side of the case to reference plane Y shall be
+ 0,O mm
L6= 11,Omm
-0,l mm
OISO/IEC
ISO/IEC 154851997 (E)
A comer at the top shall be rounded with a radius
R1 = 2,0 mm Zr 0,2 mm
and the two comers at the bottom with a radius
R2 = 2,0 mm k 0,2 mm
from the left-hand and right-hand edges of the case, the thickness of the case shall be
+ 0,2 mm
L7=7,8mm-01mm
?
The eight long edges of the case shall be rounded with a radius
R3=0,5mm+O,l mm
10.3.2 Location hole (see figure 3)
The centre of the location hole shall coincide with the intersection of the X,Y and Z plane. The diameter of the hole shall be
+ 0,05 m.In
D1 =4,00 mm
- 0,oo mm
held to a depth
Lg= 1,5mmmin.
The location hole shall extend below plane Z by
$ = 5,O mm min.
with a diameter equal to, or greater than, D1.
The location hole shall not extend through Side B.
The lead-in edges shall be chamfered and rounded off with a chamfer C, and a radius Rd for the inner edge.
= 0,5mm+O,l mm
Cl
+O,l mm
Ra = 0,2 mm
- 0,O mm
10.3.3 Alignment hole (see figure 3)
The centre of the alignment hole shall lie at the intersection of planes X and Z at a distance
L1O = 102,O mm + 0,2 mm
from reference plane Y.
The alignment hole shall have a substantially rectangular shape. Its dimensions shall be
+ 0,05 mm
Lll =4,00 mm
- 0,OO mm
+ 0,2 I-nm
L12=5,6 mm
- 0,O mm
held to a depth Lg.
The alignment hole shall extend below plane Z by $.
The alignment hole shall not extend through Side B.
The lead-in edges shall be chamfered and rounded with a chamfer Cl and radius Rh.

0IsolIEC ISO/IEC 15485: 1997 (E)
10.3.4 Reference surfaces (see figure 4)
Side A of the case shall contain four reference surfaces Sl, S2, S3, and S4.
Surface S 1 shall be circular with a diameter
D2 = 7,0 mm min.
and S2 shall be oval-shaped having centres at the Points specified by L13 with dimensions
= 3,5 mm min.
R5
L13 = 1,6 mm min.
L14 = 7,0 mm min.
Sl shall be centred on the location hole, and S2 shall be centred on the alignment hole.
Surfaces S3 and S4 shall be rectangular and shall be surrounded by the boundaries located at distances L15
L16 L17 and L18
9 9
from plane Y
L15 = 10,3 mm min.
L16 = 5,O mm max.
LIT = 112,2 mm min.
L18 =107,5 mm max.
and shall be surrounded by the boundaries located at distances L
19 and L20 from plane X.
L19 =105,0 mm min.
L20 =101,3 mm max.
No Portion of the case or of the shutter mechanism shall protrude more than
L21 = 0,15 mm max.
beyond the reference plane Z and the surface of the other side of the case.
10.3.5 Detents (see figure 5)
The case shall have two symmetrical side detents and two symmetrical bottom detents.
The two symmetrical side detents are intended for autoloading. Esch side detent shall extend from plane Z up to
+0,20 mm
L22= 6,90 mm
- 0,05 mm
and shall not extend through Side B.
Esch side detent is defined and positioned by the dimensions
Re= l,Omm$r0,2mm
L23 = 100,5 mm + 0,3 mm
L24 = 98,l mm + 0,4 nun
L25 = 92,9 mm rt 0,4 mm
L26 = 3,0 mm + 0,2 mm
The outside edges of the side detents toward the top side of the cartridge shall be rounded off by a radius
RT = 0,5 mm + 0,2 mm
The two symmetrical bottom detents are intended for clamping the cartridge in case of vertical use. The cartridge tan be
clamped by the bottom detents and prevented from falling during vertical loading or unloading. Esch bottom detent is defined
by the dimensions
L27 = 3,0 mm + 0,l mm
ISO/IEC 15485: 1997 (E) OISOAEC
L2g = 3,0 mm + 0,l mm
L29= l,Omm+O,l mm
with their centres located at distances L30 and L31 from plane Y and at a distance L32 from plane Z.
L30 = 108,O mm + 0,2 mm
L31 =6,0mm-t0,1 mm
L32 = 3,9 IllITl zk 0,l mm
10.3.6 Write inhibit hole (see figure 6)
The case shall have a Write inhibit hole W in Side A. The diameter of the Write inhibit hole shall be
D3 = 3,0 mm min.
Its centre line shall be in the reference plane Z, and parallel to the reference plane X at a distance
L33 = 18,5 mm + 0,l mm
and at a distance
L34=9,Omm&O,l mm
from plane Y.
When writing of the disk is not allowed, the Write inhibit hole W shall be extended from side A to side B.
The cartridge shall have a device capable of closing the Write inhibit hole.
When writing of the disk is allowed, the device is moved to close the Write inhibit hole W at the Position L34
.
The Write inhibit hole W shall indicate whether or not writing on the disk is permitted as specified in table 1.
Table 1 - Use of the Write inhibit hole
W Writing 1
I I
The recess of the device surface shall be
L35 = 0,05 mm max
from plane Z.
The device surface shall not protrude from plane Z.
10.3.7 Media Sensor area (see figure 6)
The case shall have a reserved media Sensor area Al with a diameter
DJ = 3,0 mm min.
The centre of the area shall be at a distance
L36 = 14,5 mm + 0,l mm
from the reference plane Y, and at a distance
L33 from the reference plane X. The reserved media Sensor area shall be closed
according to this International Standard.
The recess of the reserved area shall not be more than
L35 =0,05 mmmax.
The reserved media Sensor area shall not
protrude from plane Z.
The reserved media Sensor area shall be reserved for future use.
OISOIIEC ISO/IEC 15485:1997 (E)
10.3.8 Spindle and head windows (see figure 7a and 7b)
Side A of the case shall have a window to enable the spindle and the Optical head of the drive to access the disk. The
dimensions of the window
are referenced to a centreline, located at a distance
L37=51,0mm+O,l mm
Flom plane Y. The width of the window shall be given by
+ 0,l mm
L38= 16,5 mm
- 0,o mm
and
+O,l mm
L39 = 16,5 mm
- 0,O mm
The top of the window shall be given by radius
Rg = 64,0 mm + 0,4 mm
origi nating from L37 and
Ld0 = 40,O mm + 0,l mm
The bottom of the window shall be the arc of the semi-circle which joins the sides of the window. The centre of the semi-circle
shall be defined by L37 and La0 and the radius shall be defined by Rg.
+O,l mm
Rg= 18,O mm
-0,O mm
The diameter of the semi-circle opening is set larger than the width of the window for the purpose to secure the clamping Zone.
Side B of the case shall have a window that enables clamping of the disk. The dimensions of the window are referenced to a
centreline, located at a distance L37 from plane Y. The width of the window shall be given by L38 and L39.
The top and bottom of the window shall be the arc and semi-circle with radii Rg and R9.
The area bounded by Rg and top of the case on side A shall be recessed from plane Z by
+ 0,lO mm
LJ~ = 2,90 mm
- 0,05 mm
over the width of the window.
The area bounded by Rg and the top of the case shall be, over the window, at a distance
+ 0,lO mm
L42=5,70 mm
- 0,15 mm
10.3.9 Shutter and shutter opener (see figures 7a, 7b, 8 and 9)
The case shall have a spring-loaded shutter designed to completely cover the spindle and head windows when closed. When
open, the shutter shall expose the windows up to at least the minimum size allowed by the following dimensions, given in
10.3.8:
on Side A: from the semi-circle at the bottom of the window up to the top of the case, and from L38 to L39;
on Side B: from the semi-circle at the bottom of the window up to the top of the case, and from L38 to L39;
on the top: from plane Z to L41, from L38 to L39, from LQ up to Side B, and from L38 to L39.
The Profile on the top of the case provides a path over which the shutter opener of the drive tan travel.
The shutter of the cartridge shall have a slot with an edge, against which the shutter opener of the drive tan push to open the
shutter.
The path shall run from
OISOIIEC
ISOAEC 15485: 1997 (E)
Ld3 = 31,5 mm + 0,3 mm
to the Position of just open
+ 0,3 mm
Ld4 = 67,8 mm
- 0,O mm
which is fiom plane X to the bottom of the slot for shutter opener.
at a distance La5
L45 = 109,9 mm + 0,3 mm
The lead-in edge of the slot for shutter opener shall have a ramp with an angle
A,=45"+5"
The bottom of the slot for shutter opener shall have a width
+ 0,2 mm
La6 = $5 mm
- 0,l mm
A movement of the edge to
+ 0,3 mm
La7 = 75,3 mm
- u,o mm
shall be sufficient to open the windows to the minimum size specified in 10.5.8 without exceeding the shutter opening forte as
specified in 10.4.5, while leaving the minimum size window open.
It shall be possible to move the edge to
L48=76,Omm max.
10.3.10 Mis-insertion protection (see figure 10)
The case shall have two features to prevent the case from being inserted in the drive upside-down.
The first feature consists in mis-insertion protection notches which block the loading of a case if it is inserted upside-down.
It shall have the dimensions
L49 = 8,O mm + 0,l mm
L50=2,Omm+O,l mm
+ 0,l mm
L51= 110,Omm
- 0,3 mm
+O,l mm
L52=8,0 mm
- 0,3 mm
The depth of the mis-insertion protection notches shall be L53 and shall not be extended to side B.
L53 = 5,9 mm-t 0,l mm
The comers of mis-insertion protection notches are rounded by
RIO = 0,3 mm + 0,l mm
= l,Omm+0,2mm
R11
The second feature is a chamfer and a case comer. The Profile on the top of the case shall have a feature to prevent the case
from being inserted in the drive upside-down.
If the case is correctly loaded, the chamfer pushes aside a possible pawl in the drive. If the case is inserted upside-down, the
case comer pushes against the pawl and the case is prevented from further insertion of the case. The chamfer shall have an
angle
A,=45"+2"
OISO/IEC ISO/IEC 15485:1997 (E)
anda height
+0,3 mm
L54= 3,7 mm
-0,l mm
10.3.11 Gripper Slots (see figure 11)
The case shall have two symmetrical gripper Slots. The Slots shall have a depth of
+ 0,3 mm
L55 = 6,0 mm
- 0,O mm
from the edge of the case and a width of
+ 0,3 mm
L56= 6,0 mm
- 0,o nlm
The upper edge of a slot shall be
+ 0,O mm
L57 =5,0 mm
-0,3 mm
below reference plane X.
The comers of the gripper Slots shall be rounded off by radii
R12 = 1,0 mm $r: 0,2 mm
10.3.12 Label area (see figure 12)
The case shall have two label areas located on Side B and the bottom, with dimensions
SideB:
L5fj = 5,3 mm + 0,2 mm
L59 = 29,2mmk 0,2 mm
L6() = bt,0 mm k 0,2mm
L(jl’ 89,0 mm k 0,2 mm
The four comers of the area shall be rounded with a radius R13 = 1,5 mm max.
When there is no label, the area shall be recessed by
L(j2 = 03 mm min.
Bottom:
L63= l,ommko,l mm
L64 = 103,0 mm k 0,3 mm
= 6,0 mm + 0,2 mm
L65
with centre line located at a distance L66 from plane Z.
L66 = 3,9 mm + 0,2 mm
The four comers of the area shall be rounded with a radius
R~J = 1,0 mm max.
When there is no label, the area shall be recessed by
L67 = 0,3 mm min.
10.4 Mechanical characteristics
environment.
The requirements of 10.4.1 to10.4.4 shall all be met in the operating
OISO/IEC
ISO/IEC 154851997 (E)
10.4.1 Material
The case shall be constructed from any suitable materials such that it meets the requirements of this International Standard.
10.4.2 Mass
The mass of the case without the Optical disk shall not exceed 75 g.
10.4.3 Edge distortion
The cartridge shall meet the requirement of the edge distortion test defined in annex A.
10.4.4 Compliance
The cartridge shall meet the requirement of the compliance (flexibility) test defined in annex B. The requirement ensures that a
cartridge tan be constrained in the proper plane of Operation within the drive.
10.4.5 Shutter opening forte
The spring forte on the shutter shall be such that the forte required to fully open the shutter does not exceed 1,6 N. It shall be
sufficiently strong to close a free-sliding shutter, irrespective of the orientation of the case.
Dimensional, mechanical and physical characteristics of the disk
11.1 General description of the disk
The disk shall consist of a circular Substrate with a recording layer coated on one side. The recording layer tan be protected
from environmental influences by a protective layer. The Information Zone of the Substrate is transparent so as to allow an
Optical beam to focus on the recording layer through the Substrate. The disk has a centre hole which provides the radial centring
of the disk .
11.2 Reference axis and plane of the disk (see figure 13)
The disk reference plane P is defined by the perfectly flat annular surface of an ideal spindle onto which the Clamping Zone of
the disk is clamped, and which is normal to the axis of rotation of this spindle which Passes through the centre of the centre hole
of the disk, and is normal to plane P.
11.3 Dimensions of the disk (see figure 13)
The dimensions of the disk shall be measured in the test environment. The dimensions of the disk in an operating environment
CXl be estimated from the dimensions specified below. The outer diameter of the disk shall be
+ 0,2 mm
Dg = 120,O mm
- 0,2 mm
Excluding axial deflection (See 11.4.5), the total thickness of the disk shall not exceed 1,4 mm with the exception of the annular
region between concentric circles of diameter 40,O mm and 425 mm. Within this annular region of the disk, a projection of not
more than 0,24 mm in height below the reference plane of the disk is permitted.
The diameter of the centre hole of the disk shall be
+O,l mm
Dg = 150 mm
- 0,O mm
11.3.1 Clamping Zone (see figure 13 )
The outer diameter of the Clamping Zone shall be
DT = 33,0 mm min.
The inner diameter of the Clamping Zone shall be
Dg = 26,0 mm max.
The lead-in edge of the centre hole shall have a chamfer C2 of 45” by 0,l mm max. or shall be rounded off by a radius
R15 = 0,l mm max.
BLUTS opposite the entrance surface of the centre hole arc permitted. The height of such burrs shall be less than 0,2 mm.
OISO/IEC ISO/IEx 15485: 1997 (E)
11.3.2 Clamping forte
The clamping forte on the Clamping Zone of a disk shall not exceed 10 N.
11.4 Mechanical characteristics
The requirements of 11.4.1 to 11.4.4 shall all be met in the operating environment.
11.4.1 Material
The disk shall be made from any suitable materials such that it meets the requirements of this International Standard. The only
material properties specified by this International Standa
...