Information technology - 130 mm optical disk cartridge, write once, for information interchange - Part 1: Unrecorded optical disk cartridge (ISO/IEC 9171-1:1990)

Informationstechnik - 130 mm Optische Plattenspeicher - Einmal beschreibbar, für den Informationsaustausch - Teil 1: Unbeschriebene optische Platte (ISO/IEC 9171-2:1990)

Technologies de l'information - Cartouche de disque optique de 130 mm, non-réinscriptible, pour l'échange d'information - Partie 1: Cartouche de disque optique vierge (ISO/IEC 9171-1:1990)

Information technology - 130 mm optical disk cartridge, write once, for information interchange - Part 1: Unrecorded optical disk cartridge (ISO/IEC 9171-1:1990)

General Information

Status
Withdrawn
Publication Date
15-Feb-1993
Withdrawal Date
27-Oct-1998
Current Stage
9960 - Withdrawal effective - Withdrawal
Due Date
28-Oct-1998
Completion Date
28-Oct-1998

Buy Standard

Standard
EN 29171-1:1997
English language
42 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Information technology - 130 mm optical disk cartridge, write once, for information interchange - Part 1: Unrecorded optical disk cartridge (ISO/IEC 9171-1:1990)Informationstechnik - 130 mm Optische Plattenspeicher - Einmal beschreibbar, für den Informationsaustausch - Teil 1: Unbeschriebene optische Platte (ISO/IEC 9171-2:1990)Technologies de l'information - Cartouche de disque optique de 130 mm, non-réinscriptible, pour l'échange d'information - Partie 1: Cartouche de disque optique vierge (ISO/IEC 9171-1:1990)Information technology - 130 mm optical disk cartridge, write once, for information interchange - Part 1: Unrecorded optical disk cartridge (ISO/IEC 9171-1:1990)35.220.30QDSUDYHOptical storage devicesICS:Ta slovenski standard je istoveten z:EN 29171-1:1993SIST EN 29171-1:1997en01-december-1997SIST EN 29171-1:1997SLOVENSKI

STANDARD
SIST EN 29171-1:1997
SIST EN 29171-1:1997
SIST EN 29171-1:1997

INTERNATIONAL STANDARD Iso/IEC 9171-1 First edition 1990-12-15 Information technology - 130 mm Optical disk cartridge, write once, for information interchange - Part 1: Unrecorded Optical disk cartridge Technologies de l’information - Cartouche de disque optique de 730 mm, non-rknscrip tible, pour l’khange d’informa tion - Partie 7: Cartouche de disque optique vierge Reference number ISOAEC 9171-1 : 1990 (EI SIST EN 29171-1:1997

ISOAEC 9171~kl990 (E) Table of Contents Page Scope Conformance Normative references Definitions 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 case Clamping Zone Control Track cyclic redundancy check (CRC) defect management disk reference plane entrance surface error correction code (ECC) format groove hub interleaving land and groove mark Optical disk Optical disk cartridge (ODC) recording layer Reed-Solomon code spindle Substrate track track pitch 5 General description @ ISO/IEC 1990 All rights reserved. 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 l Case postale 56 l CH-121 1 Geneve 20 l Switzerland Printed in Switzerland ii 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 SIST EN 29171-1:1997

ISO/IEC 9171~1:1990 (E) 6 Environments 3 6.1 6.2 6.3 Testing environment Operating environment Storage environments 6.3.1 Short-term storage 6.3.2 Lang-term storage Safety requirements 8 Dimensional and mechanical characteristics of the case 4 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 8.12 8.13 8.14 8.15 8.16 8.17 8.18 General Case drawings Sides, reference axes and reference planes 8.3.1 Relationship of Sides A and B 8.3.2 Reference axes and case reference planes Materials Mass Overall dimensions (figure 3) Location hole (figure 3) Alignment hole (figure 3) Surfaces for reference planes P (figures 4 and 4a) Insertion Slots and detent features (figure 5) Gripper Slots (figure 6) Write-inhibit holes (figure 7) Media Sensor holes (figure 8) Head and motor window (figure 10) Shutter (figure 11) Slot for shutter opener (figure 11) Shutter Sensor notch (figure 9) User label areas (figure 13) 9 Dimensional and Physical Characteristics of the Disk 12 9.1 Dimensions of the disk 12 9.1.1 Outer diameter 12 9.1.2 Thickness 12 9.1.3 Clamping Zone (figure 1) 12 9.1.4 Clearance zone 12 9.2 Mass 9.3 Moment of inertia 9.4 Imbalance 9.5 Axial deflection 3 3 3 3 4 4 4 4 5 5 5 5 5 5 6 6 6 8 8 8 9 10 10 10 11 11 12 12 12 12 . . . Ill SIST EN 29171-1:1997

ISO/IEC 917101:1990 (E) 9.6 Axial acceleration 9.7 Dynamit radial runout 9.8 Radial acceleration 9.9 Tilt 12 13 13 13 10 Drop test 13 11 Interface between disk and drive 13 11.1 Clamping technique 11.2 Dimensions of the hub (figure 1) 13 13 11.2.1 Outer diameter of the hub 11.2.2 Height of the hub Diameter of the centre hole Height of the top of the centre hole at diameter Dg Centring length at diameter Dg Chamfer at inner diameter Dg Chamfer at outer diameter &3 Outer diameter of the magnetizable ring Inner diameter of the magnetkable ring Thickness of the magnetizable material Position of the top of the magnetizable ring relative to the disk reference plane 13 13 13 14 14 14 14 14 14 14 11.2.3 11.2.4 11.2.5 11.2.6 11.2.7 11.2.8 11.2.9 11.2.10 11.2.11 14 11.3 Magnetizable material 11.4 Clamping forte 11.5 Capture cylinder for the hub (figure 12) 11.6 Disk Position in the operating condition (figure 12) 14 14 15 15 12 Characteristics of the Substrate 30 30 30 30 12.1 Index of refraction 12.2 Thickness 12.3 Birefringence 13 Characteristics of the recording layer 30 13.1 Test conditions 30 13.1.1 General 13.1.2 Read conditions 13.1.3 Write conditions 30 31 31 13.2 Baseline reflectance 31 13.2.1 General 31 13.2.2 Actual value 32 13.2.3 Requirement 32 13.3 Definitions of Signals 32 SIST EN 29171-1:1997

ISO/IEC 9171~1:1990 (E) 13.4 13.5 Prerecorded marks 33 User-written data 33 13.5.1 Signal 1~ 33 13.5.2 Signal 1~ 33 13.5.3 Narrow-band signal-to-noise ratio (figure 15) 33 13.5.4 Cross-talk 34 ANNEX A - Office environment 35 ANNEX B - Transportation 36 ANNEX C - Measurement of birefringence 37 ANNEX D - Definition of write and erase pulse width 40 SIST EN 29171-1:1997

ISO/IEC 9171~1:1990 (E) , FOREWORD ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized System for worldwide standardiz- ation. National bodies that are members of ISO 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. 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 requires approval by at least 75 % of the national bodies casting a vote. International Standard ISO/IEC 9171-1 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology. ISO/IEC 9171 consists of the following Parts, under the general title: Information technology - 130 mm Optical disk cartridge, write once, for information interchange : Part 1: Unrecorded Optical disk cartridge Part 2: Recording formst Annexes C and D form an integral part of this part of ISO/IEC 9171. Annexes A and B are for information only. SIST EN 29171-1:1997

ISO/IEC 917101:1990 (E) INTRODUCTION ISO/IEC 9171 specifies the characteristics of 130 mm Optical disk cartsidges (ODC) of the type providing for information to be written once and read many times. ISO/IEC 9171-2 specifies two formats 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. ISOAEC 9171-1 and ISOIIEC 9171-2 together with a Standard for volume and file structure provide for full data interchange between data processing Systems. vii SIST EN 29171-1:1997

This page intentionally lefi blank SIST EN 29171-1:1997

INTERNATIONAL STANDARD ISO/IEC 9171-1: 1990 (E) Pnf ormation technology - 130 mm Optical disk cartridge, write once, for information interchange - Part 1: Unrecorded Optical disk cartridge 1 Scope This part of ISO/IEC 9171 specifies - definitions of essential concepts, - the environment in which the characteristics are to be tested, - the environments in which the cartridge is to be operated and stored, - the mechanical, physical and dimensional characteristics of the case and of the optical dkk, - the Optical characteristics and the recording characteristics for recording the information once and for reading it many times, so as to provide physical interchangeabiiity between data pro- cessing Systems. 2 Conformance A 130 mm Optical disk cartridge is in conformance with this part of ISO/IEC 9171 if it meets all the mandatory requirements specified therein. 3 Normative references The following Standards contain provisions which, through reference in this text, constitute provi- sions of this part of ISO/IEC 9171. At the time of publication, the editions indicated were valid. All Standards are subject to revision, and Parties to agreements based on this part of ISO/IEC 9171 are encouraged to investigate the possibility of applying the most recent editions of the Standards listed below. Members of IEC and ISO maintain registers of currently valid International Stan- dards. ISO 683-13 Heat treatable steels, alloy steels and free-cutting steeis - Part 1.3 Wrought staidess steels IEC 950 Safety of information technology equipment including electrical business equipment 4 Definitions For the purposes of this part of ISO/IEC 9171, the following definitions apply. 4.1 case: The housing for an Optical disk, that protects the disk and facilitates disk interchange. 4.2 Clamping Zone: The annular part of the disk within which the clamping forte is applied by the clamping device. 4.3 4.4 Control Track: A track containing the information on media Parameters and formst necessary for writing and reading the remaining tracks on the Optical disk. cyclic redundancy check (CRC): A method for detecting errors in data. SIST EN 29171-1:1997

ISO/IEC 9171-1:1990 (E) 4.5 4.6 4.7 4.8 defect management: A method for handling defective areas on the disk. disk reference plane: A plane defined by the perfectly flat annular surface of an ideal spindie on to which the clamping Zone of the disk is clamped, and which is normal to the axis of rotation. entrance surface: The surface of the disk on to which the Optical beam first impinges. error correction code (ECC): An error-detecting code designed to correct certain kinds of errors in data. 4.9 4.10 4.11 format: The arrangement or layout of the data on a medium. groove: See 4.13. hub: The central feature on the disk which interacts with the spindle of the disk drive to provide radial centring and the clamping forte. 4.12 interleaving: The process of allocating the physical sequence sf units of data so as to render the data more immune to burst errors. 4.13 4.14 land and groove: A trench-like feature of the disk, applied before the recording of any informa- tion, and used to 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. mark: A feature of the recording layer which may take the form of a hole, a pit, a bubble or any other type or form that tan be sensed by the Optical System. The Pattern of marks represents the data on the disk. 4.15 Optical disk: A disk that will accept and retain information in the form of marks in a recording layer, that tan be read with an Optical beam. 4.16 4.17 Optical disk cartridge (ODC): A device consisting of a case containing an Optical disk. recording layer: A layer of the disk on, or in, which data is written during manufacture and/or use. 4.18 4.19 4.20 4.21 Reed-Solomon code: An error detection and/or correction code which is particularly suited to the correction of errors which occur in bursts or are strongly correlated. spindle: The part of the disk drive which contacts the disk and/or hub. Substrate: A transparent layer of the disk, provided for mechanical protection of the recording layer, through which the Optical beam accesses the recording layer. track: The path which is followed by the focus of the Optical beam during one revolution of the disk. 4.22 track pitch: The distance between adjacent track centrelines, measured in a radial direction. 5 General description The Optical disk cartridge which is the subject of this part of ISO/IEC 9171 consists of a case con- taining an Optical disk. An Optical beam is used to write data to, or to read data from, the disk. A disk tan be recordable either on one or on both sides. The disk is intended for use in a drive with Optical access from one side only. To gain access to the second side of a disk recordable on both sides, the cartridge must be reversed before insertion into the drive. A disk recordable on one side only consists of a transparent protective layer acting as a Substrate with a recording layer on one side and a hub on the other. The recording layer is accessed by an Optical beam through the Substrate. A disk recordable on both sides consists of two disks, each recordable on one side, and assembled together with the recording layers on the inside. SIST EN 29171-1:1997

ISO/IEC 9171~1:1990 (E) Other constructions are permitted but must have the same Optical characteristics. 6 6.1 6.2 6.3 6.3.1 Environments Testing environment Unless otherwise specified, tests and measurements made on the Optical disk cartridge to check the requirements of this part of ISO/IEC 9171 shall be carried out in an environment where the air immediately surrounding the Optical disk cartridge is within the following conditions. Temperature Relative humidity Atmospheric pressure 23°C iI 2°C 45% to 55% 100 kPa + 35 kPa Before testing the Optical disk cartridge shall be conditio ned i mum. No cond ensation on or in the opti cal disk cartridge shall Operating environment Optical disk cartridges used air im mediate ly surrounding n this environ .ment for 48 h mini- occur for data interchange shall be operated in an environment where the the Optical disk cartridge is within the following conditions. Temperature Relative humidity Wet bulb temperature Atmospheric pressure Temperature gradient Relative humidity gradient 10°C to 50°C 10% to 80% 29°C max. 75 kPa to 105 kPa 10°C /h max. 10% /h max. Air cleanliness Office environment (see Annex A) No condensation on or in the Optical disk cartridge shall be allowed to occur. If a.n Optical disk cartridge has been exposed during storage and/or transportation to conditions outside those given above, it shall be acclimatised in the operating environment for at least 2 h before use. In the operating environment an ODC shall be capable of withstanding a thermal shock of up to 20 “C when inserted into, or removed from, the drive. Storage environments Storage environment is the ambient condition to which the Optical disk cartridge without any additional protective enclosure, is exposed when stored. Short-term storage For a maximum period of 14 consecutive to environmental conditions outside those days given the Optical disk cartridge shall not be exposed below. Temperature Relative humidity Wet bulb temperature Atmospheric pressure Temperature gradient Relative humidity gradient -20°C to 55°C 5% to 90% 29°C max. 75 kPa to 105 kPa 20°C /h max. 20% /h max. Air cleanliness Office environment (see Annex A) No condensation on or in the Optical disk cartridge shall be allowed to occur. SIST EN 29171-1:1997

ISO/IEC 9171~131990 (E) 6.3.2 7 Long-term storage For a storage period longer than 14 days the Optical disk cartridge shall not be exposed to environmental conditions outside those given below. Temperature -10°C to 50°C Relative humidity 10% to 90% Wet bulb temperature 29°C max. Atmospheric pressure 75 kPa to 105 kPa Temperature gradient 1s”C /h max. Relative humidity gradient 10% /h max. Air cleanliness Office environment (see Annex A) No condensation on or in the Optical disk cartridge shall be allowed to occur. Safety requirements The cartridge and its intended man ner or i components shall n any foreseeable satisfy use in the safety requ irements of IE@ 950, when used in its an i nformation processing System. 8 Dimensional and mechanical characteristics of the case 8.1 General The case shall be a rigid, protective enclosure of rectangular shape and include a shutter which uncovers access windows upon insertion into the drive, and automatically covers them upon removal from the drive. The case shall have means for positioning and identifying the cartridge, and write-inhibit holes. The dimensions of the inside of the case are not specified in this part of ISO/IEC 9171, but are determined by the movement of the disk inside the case allowed by 11.5 and 11.6. 8.2 Case drawings The case is represented schematically by the following drawings: Figure 1 Shows the hub dimensions. - Figure 2 Shows a composite drawing of Side A of the case in isometric form, with the major features identified from Side A. Figure 3 defines the envelope of the case the X and Y axes, and reference plane P. with respect to a location hole at the intersection of - Figure 4 defines the surfaces SI, S2, S3 and S4 which establish the reference plane P. Figure 4a is an enlarged view of surface S3. Figure 5 defines the details of the insertion slot and detent. Figure 6 defines the gripper Slots, used for automatic handling. - Figure 7 defines the write-inhibit holes. - Figure 8 defines the media ID Sensor holes. Figure 9 defines the shutter Sensor notch. Figure 10 defines the access holes for the head and the motor. - Figure 11 defines the shutter opening features. - Figure 12 defines the Capture cylinder. SIST EN 29171-1:1997

ISO/IEC 917101:1990 (E) 8.3 8.3.1 8.3.2 8.4 8.5 8.6 - Figure 13 defines the user label areas. Sides, reference axes and reference planes Relationship of Sides A and B The features essential for physical interchangeability are represented in figure 2. When Side A of the cartridge faces upwards, Side A of the disk faces downwards. Sides A and B of the case are identical as far as the features given here are concerned. The description is given for one side only. References to Sides A and B tan be changed to B or A respectively. Only the shutter and the slot for the shutter opener, described in 8.14 and 8.15 are not identi- cal for both sides of the case. Reference axes and case reference planes There is a reference plane P for each side of the case. Esch reference plane P contains two orthogonal axes X and Y to which the dimensions of the case are referred. The intersection of the X and Y axes defines the centre of the location hole. The X axis extends through the centre of the alignment hole. Materials The case shall be constructed from any suitable materials such that it meets the requirements of this part of ISO/IEC 9171. Mass The mass of the case without the Optical disk shall be 150 g max. Overall dimensions (figure 3) The total length of the case shall be Ll = 153,O mm + 0,4 mm. The distance from the top of the case to the reference axis X shall be L2 = 127,O mm + 0,3 mm. The distance from the bottom of the case to the reference axis X shall be L3 = 26,O mm * 0,3 mm The total width of the case shall be + 0,O mm L4 = 135,O mm - 0,O mm The distance from the left hand side of the cartridge to the reference axis Y shall be + 0,O mm L5 = 128,5 mm - 0,5 mm The distance from the right hand side to the reference axis Y shall be Lh = 6,5 mm + 0,2 mm. The width shall be reduced on the top as defined by the radius Rl = L4 originating from a Point defined by L5 and L7 = 101,O mm + 0,3 mm. SIST EN 29171-1:1997

ISO/IEC 91710kl990 (E) The two corners of the top shall be rounded with a radius R2 = 1,5 mm + 0,5 mm and the two corners at the bottom with a radius R3 = 3,0 mm + 1,0 mm. The thickness of the case shall be Lt4 = 11,OO mm + 0,30 mm. The eight long edges of the case shall be rounded with a radius R4 = 1,0 mm max. 8.7 Location hole (figure 3) The centre of the location hole shall coincide with the intersection of the reference axes X and Y. It shall have a Square form with a side length of + 0,OO mm L9 = 4,lO mm - 0,06 mm held to a depth of Lw = 1,5 mm (i.e. typical wall thickness), after which a cavity expands through to the alignment hole on the opposite side of the case. The lead-in edges shall be rounded with radius R5 = 0,5 mm max. 8.8 Alignment hole (figure 3) The centre of the alignment hole shall he on reference axis X at a distance of hl = 122,0 mm ? 0,2 mm from the reference axis Y. The dimensions of the hole shall be + 0,OO mm L12 = 4,lO mm - 0,06 mm + 0,2 mm L13 = 5,0 mm - 0,O mm held to a depth of Ll() , after which a cavity expands through to the location hole on the opposite side of the case. The lead-in edges shall be rounded with radius Rg. 8.9 Surfaces for reference planes P (figures 4 and 4a) The reference plane P for a side of the case shall contain four surfaces Sl, SZ, S3 and S4 on that side of the case, specified as follows: - Two circular surfaces SI and SZ. 6 SIST EN 29171-1:1997

ISO/IEC 9171~1:1990 (E) Surface SI shall be a circular area centred around the Square location hole and have a diameter of Dl = 9,0 mm min. Surface S2 diameter of shall be a circular area centred around the rectangular alignment hole and have a 02 = 9,0 mm min. - TWO elongated surfaces S3 and SJ, that follow the contour of the cartridge and shutter edges. Surfaces S3 and SJ are shaped symmetrically. Surface S3 shall be defined by two circular sections with radii Rh = 1,s mm t 0,l mm with an origin given by L14 = 4,0 mm 2 0,l mm L15 = 86,O mm t OJ mm R7 = 1,s mm k 0,l mm with an origin given by bt, = 1,9 mm + 0,l mm L17 = 124,s mm rt 0,3 mm The arc with radius R7 shall continue on the right hand side with radius + 0,2 mm R8 = 134,0 mm - 0,7 mm which is a dimension resulting from L5 + ~514 + Rb with an origin given by L5 and L7. A straight, vertical line shall smoothly join the arc of Rb to the arc of Rg. The left hand side of S3 shall be bounded by radius R9 = 43 mm If: 0,3 mm which is a dimension resulting from Lls + L14 - Rh with an origin given by Ll8 = 2,0 mm + 0,l mm L19 = 115,s mm 2 0,3 mm The left hand side of the boundary shall be closed by two straight lines. The first one shall smoothly join the arc of Rh to the arc of R+ The second one shall run from the left hand tangent of R7 to its intersection with Rc~. Along the left hand side of surface S3 there shall be a Zone to protect S-j from being damaged by the shutter. In Order to keep this zone at a minimum practical e width, RlO = 4,l mm max. This radius originates from the same Point as Rg. SIST EN 29171-1:1997

ISO/IEC 9171~1:1990 (E) 8.10 Insertion Slots and detent features (figure 5) The shali have shall have two symmetrical insertion Slots with em a len gth of bedded detent features. The Slots L20 = 26,0 mm & 0,3 mm a width of + 0,3 mm L21 = 6,0 mm - 0,O mm and a depth of L22 = 3,0 mm t 0,l mm located L23 = 2,5 mm $- 0,2 mm from reference plane P. The Slots shall have a lead-in chamfer given by L24 = 0,5 mm max. L25 = 5,0 mm max. The detent notch shall be a semi-circle of radius RH = 3,0 mm + 0,2 mm with the origin given by L2t-i = 13,0 mm + 0,3 mm L27 = 2,0 mm & 0,l mm 8.11 Gripper Slots (figure 6) The case shall have two symmetrical gripper Slots with a depth of L28 = 5,0 mm f: 0,3 mm from the edge of the case and a width of L29 = 6,0 mm t 0,3 mm The upper edge of a slot shall be JfJ30 = 12,0 mm + 0,3 mm above the bottom of the case. 8.12 Write-inhibit holes (figure 7) Sides A and B shall each have a write-inhibit hole. The case shall include a device for opening and closing each hole. The hole at the left hand side of Side A of the case, between B-B of figure 7, is the write-inhibit for Side A of the disk. The protected side of the disk shall be made clear by inscriptions on the case or by the fact that the device for Side A of the disk tan only be operated from Side A of the case. When writing on Side A of the disk is not allowed, the hole shall be open all through the case. It shall have a diameter D3 = 4,0 mm min. 8 SIST EN 29171-1:1997

ISO/IEC 9171~1:1990 (E) Its centre shall be specified by L31 = 8,0 mm + 0,2 mm L32 = 111,0 mm + 0,3 mm on Side A of the case. When writing is allowed on Side A of the disk, the hole defined above shall be closed on Side A of the case, at a depth of typically Ll(), i.e. the wall thickness of the case. In this state, the opposite side of the same hole, at Side B of the case, shall be closed and not recessed from the reference plane P of Side B of the case by more than L33 = 0,5 mm The opposite side of the write-inhibit hole for protecting Side B of the disk shall have a diameter D3. Its centre shall be specified by L31 and L34 = 11,0 mm + 0,2 mm on Side A of the case. 8.13 Media Sensor holes (figure 8) There shall be two sets of four media Sensor holes. The set of holes at the lower left hand corner of Side A of the case, between C-C of figure 8, pertains to Side A of the disk. The holes shall extend through the case, and have a diameter of + 0,3 mm 04 = 4,0 mm - 0,O mm the positions of their centres shall be specified by L3s = 19,5 mm & 0,2 mm L34 = (see 8.12) L3iI = 17,O mm + 0,2 mm L37 = 23,0 mm + 0,2 mm L38 = 29,0 mm & 0,2 mm L39 = 93,0 mm + 0,3 mm L40 = 99,0 mm rfi 0,3 mm L41 = 105,O mm + 0,3 mm L32 = (see 8.12). A hole is deemed to be open when there is no obstruction in this hole over a diameter 04 all through the case. A hole for Side A of the disk is deemed to be closed, when the hole is closed on both Side A and Side B of the case. The closure shall be recessed from reference plane P by L42 = 0,l mm max. The holes are numbered consecutively from 1 to 4. Hole No. 1 is the hole closest to the left hand edge of the case. The Optical disk cartridge according to this part of ISO/IEC 9171 uses only holes No. 1 and No. 2. The other two holes shall be in the closed state. SIST EN 29171-1:1997

ISO/IEC 917101:1990 (E) The function of hole No. 1 is to indicate whether the baseline reflectance of the disk is high or low (see 13.2.1). When the hole is closed the baseline reflectance is low, when it is open the baseline reflectance is high. The function of hole No. 2 is to indicate whether the cartridge as loaded in the drive tan be operated. When the hole is closed the cartridge is operable, when it is open the cartridge is not operable. 8.14 Head and motor window (figure 10) The case shall have a window on eac h side to enable the Optical head and the disk. The dimensions are referenced to a centreline, located at a distance of motor to access the L46 = 61,0 mm + 0,2 mm to the left of reference axis Y. The width of the head access shall be L47 = 20,OO mm min. L48 = 20,OO mm min. and its height shall extend from L49 = l18,2 mm min. to L50 = 57,0 mm max. The four inside corners shall be rounded with a radius of R12 = 3,0 mm max. The motor access shall have a diameter of D5 = 35,0 mm min. and its centre shall be defined by LQ, and L51 = 43,0 mm + 0,2 mm. 8.15 Shutter (figure 11) The case shall employ a spring-loaded, unidirectional shutter with an optional latch, designed to completely cover the head and motor window when closed. The windows shall be exposed to at least the minimum window size specified in 8.14 by a shutter movement of 41,5 mm min. The shutter shall be free to slide in a recessed area of the case in such a way as to ensure that the Overall thickness shall not exceed Ls. The spring shall be sufficiently strong to close a free-sliding shutter, irrespective of the orientation of the cartridge. The shutter opening forte shall be 3 N max. The right hand side of the top of the shutter shall have a lead-in ramp with an angle A2 = 25” max. The distance from the reference planes P to the nearest side of the ramp shall be L52 = 3,0 mm max. 8.16 Slot for shutter opener (figure 11) The shutter shall have only one slot in which the shutter opener of the drive tan engage to open the shutter. The slot shall be dimensioned as follows: 10 SIST EN 29171-1:1997

ISOPIEC 917101:1990 (E) When the shutter is closed, the vertical edge used to push the shutter open shall be distance sf located L53 = 34,5 mm + 0,5 mm from reference axis Y on Side B of the case. The length of the slot shall be L54 = 4,5 mm t 0,l mm and the angle of the lead-out ramp shall be A3 = 52,5’ f 7,5’ The depth of the slot shall be L55 = 3,5 mm + 0,l mm The width of the slot from the reference plane P of Side B of the case shall be + 0,5 mm L56 = 6,0 mm - 0,O mm lf a shutter latch is employed, the distance between the case shall be the latch and reference plane P of Side B of L57 = 3,0 mm max. 8.17 Shutter Sensor notch (figure 9) The shutter Sensor notch is designed to make it possible to ensure that the shutter is fully open after insertion of the Optical disk cartridge into the drive. Therefore, the notch shall be exposed only when the shutter is fully open. The dimensions shall be L43 = 3,5 mm + 0,2 mm L44 = 71,0 mm + 0,3 mm and + 0,O mm L45 = 9,0 mm - 2,0 mm The notch shall have a lead-out ramp with an angle of Al = 45” z!I 2” 8.18 User label areas (figure 13) The case shall have the following minimum areas for user labels: - on Side A and Side B: 35,0 mm x 65,0 mm on the bottom side: 6,0 mm x 98,0 mm These areas shall be recessed by 0,2 mm dimensions and relations between dimensio L61 m ns = 4,5 mm min. .in. Their posit (see figure 13). ions are specified by the following L62 - L6l = 65,0 mm min. L64 - L63 = 35,0 mm min. 11 SIST EN 29171-1:1997

ISO/IEC 9171-1:1990 (E) 9 Dimensional and Physical Characteristics of the Disk 9.1 Dimensions of the disk 9.1.1 Outer diameter The outer diameter of the disk shall be 130,O mm nominal. The tolerante is determined by the movement of the disk inside the case allowed by 11.5 and 11.6. 9.1.2 Thickness The total thickness of the disk outside the hub area shall not exceed 3,20 mm. 9.1.3 Clamping zone (figure 1) The outer diameter D6 of the zone shall be D6 = 35,O mm min. The inner diameter D7 of the zone shall be 07 = 27,0 mm max. 9.1.4 Clearance zone Within the zone defined by the outer diameter of the clamping zone (Dh) and the inner diameter of the Reflective Zone (see 4.2 of lSO/lEC 9171-2) there shall be no projection from the disk reference plane in direction o

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.