ISO/IEC 17594:2004

INTERNATIONAL ISO/IEC
STANDARD 17594
First edition
2004-07-15
Information technology — Cases for
120 mm and 80 mm DVD-RAM disks
Technologies de l'information — Coffrets pour disques DVD-RAM de
120 mm et 80 mm
Reference number
©
ISO/IEC 2004
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©  ISO/IEC 2004
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO/IEC 2004 – All rights reserved

Contents Page
Section 1 - General. 1
1 Scope. 1
2 Conformance . 1
3 Normative references . 2
4 Definitions. 2
5 Conventions and notations. 2
5.1 Representation of numbers . 2
5.2 Names. 2
6 General description of the case . 2
6.1 General description of the Type 1 case (Figure 1) . 2
6.2 General description of the Type 2 case (Figure 2) . 2
6.3 General description of the Type 3 case (Figure 2) . 3
6.4 General description of the Type 4 case (Figure 3) . 4
6.5 General description of the Type 5 case (Figure 3) . 4
6.6 General description of the Type 6 case (Figure 4) . 5
6.7 General description of the Type 7 case (Figure 5) . 5
6.8 General description of the Type 8 case (Figure 4) . 6
6.9 General description of the Type 9 case (Figure 5) . 6
7 General requirements . 7
7.1 Environments . 7
7.1.1 Test environment . 7
7.1.2 Operating environment. 7
7.1.3 Storage environment . 8
7.1.4 Transportation. 8
7.2 Temperature shock . 8
7.3 Safety requirement. 8
7.4 Flammability . 8
Section 2 - Dimensional and mechanical characteristics of the case for 120 mm disks . 9
8 Dimensional characteristics . 9
8.1 Dimensions of the Type 1 case . 9
8.1.1 Overall dimensions (Figure 6) . 9
8.1.2 Location hole (Figure 6) . 10
8.1.3 Alignment hole (Figure 6). 10
8.1.4 Reference surfaces (Figure 7) . 11
8.1.5 Insertion slots (Figure 8) . 11
8.1.6 Detents (Figure 8). 12
8.1.7 Gripper slots (Figure 8) . 12
8.1.8 Write-inhibit hole (Figure 9) . 13
8.1.9 Sensor holes (Figure 9) . 13
8.1.10 Sensing areas (Figure 9) . 14
8.1.11 Spindle and head window (Figure 10). 14
8.1.12 Shutter shape (Figure 11). 15
8.1.13 Path for shutter opener (Figures 12 and 13) . 15
8.1.14 Label areas (Figure 14). 16
8.1.15 Identification marks for Sides A and B (Figure 15) . 16
8.2 Dimensions of the Type 2 case . 28
8.2.1 Overall dimensions (Figure 16) . 28
8.2.2 Location hole (Figure 16) . 29
© ISO/IEC 2004 – All rights reserved iii

8.2.3 Alignment hole (Figure 16) .29
8.2.4 Reference surfaces (Figure 17).29
8.2.5 Insertion slot (Figure 18) .30
8.2.6 Detents (Figure 18).30
8.2.7 Gripper slots (Figure 18).31
8.2.8 Write-inhibit hole (Figure 19).31
8.2.9 Sensor holes (Figure 19) .32
8.2.10 Sensing areas (Figure 19).32
8.2.11 Spindle and head window (Figure 20).33
8.2.12 Shutter shape (Figure 21) .33
8.2.13 Path for shutter opener (Figure 22 and 23).34
8.2.14 Label areas (Figure 24) .35
8.2.15 Identification mark for Side A (Figure 25).35
8.2.16 Opening and opening cover for taking the disk out of the case .35
8.3 Dimensions of the Type 3 case.45
8.3.1 Sensor holes .45
8.3.2 Opening and opening cover for taking the disk out of the case .46
8.4 Dimensions of the Type 4 case.46
8.4.1 Sensor holes .46
8.4.2 Opening and opening cover for taking the disk out of the case .46
8.5 Dimensions of the Type 5 case.47
8.5.1 Sensor holes .47
8.5.2 Opening and opening cover for taking the disk out of the case .47
9 Mechanical characteristics.47
9.1 Material .47
9.2 Mass.47
9.3 Edge distortion .47
9.4 Compliance .47
9.5 Shutter opening force .47
10 Interface between the case used as cartridge and a drive.48
10.1 Capture cylinder (Figure 26).48
10.2 Inner dimensions of the case (Figure 27) .49
11 Orientation of the disk in the case.50
11.1 Two-sided disk (Type 2S) in case Types 1, 4 and 5.50
11.2 One-sided disk (Type 1S) in case Types 1, 2 and 3 .50
Section 3 - Dimensional and Mechanical characteristics of the case for 80 mm disk.52
12 Dimensional characteristics.52
12.1 Dimensions of the Type 6 case.52
12.1.1 Overall dimensions (Figure 28).52
12.1.2 Location hole (Figure 28).53
12.1.3 Alignment hole (Figure 28) .53
12.1.4 Reference surfaces (Figure 29).54
12.1.5 Mis-insertion protection slots (Figure 30) .54
12.1.6 Detents (Figure 30).54
12.1.7 Write-inhibit hole (Figure 31).55
12.1.8 Sensor holes (Figure 31) .56
12.1.9 Spindle and head window (Figure 32).56
12.1.10 Shutter shape (Figure 33) .57
12.1.11 Path for shutter opener (Figure 34) .58
12.1.12 Label areas (Figure 35) .59
12.1.13 Identification marks for Sides A and B (Figure 36).59
12.1.14 Disk holder and body (Figures 37 and 38).60
12.2 Dimensions of the Type 7 case.74
12.2.1 Overall dimensions (Figure 39).74
12.2.2 Location hole (Figure 40).74
12.2.3 Alignment hole (Figure 40) .75
12.2.4 Reference surfaces (Figure 40).75
iv © ISO/IEC 2004 – All rights reserved

12.2.5 Mis-insertion protection slots (Figure 41) . 76
12.2.6 Detents (Figure 41). 76
12.2.7 Write-inhibit hole (Figure 42) . 77
12.2.8 Sensor holes (Figure 42) . 77
12.2.9 Spindle and head window (Figure 43). 78
12.2.10 Shutter shape (Figure 44). 79
12.2.11 Path for shutter opener (Figure 45). 80
12.2.12 Label areas (Figure 46). 81
12.2.13 Identification marks for Sides A and B (Figure 47) . 81
12.2.14 Disk holder and body (Figure 48) . 82
12.3 Dimensions of the Type 8 case . 96
12.3.1 Sensor holes. 96
12.3.2 Disk holder and body. 96
12.4 Dimensions of the Type 9 case . 96
12.4.1 Sensor holes. 96
12.4.2 Disk holder and body. 97
13 Mechanical characteristics . 97
13.1 Material. 97
13.2 Mass . 97
13.3 Edge distortion. 97
13.4 Compliance. 97
13.5 Shutter opening force. 97
14 Interface between the case used as cartridge and a drive . 97
14.1 Capture cylinder (Figure 50) . 97
14.2 Inner dimensions of the case (Figure 51). 97
15 Orientation of the disk in the case . 98
15.1 Two-sided disk (Type 2S) in case Types 6 and 8. 98
15.2 One-sided disk (Type 1S) in case Types 7 and 9. 98
Annex A (normative) Position of the case for 120 mm disk relative to the Reference Planes. 101
Annex B (normative) Edge distortion test of the case for 120 mm disk. 102
Annex C (normative) Compliance test of the case for 120 mm disk. 104
Annex D (normative) Position of the case for 80 mm disk relative to the Reference Planes. 106
Annex E (normative) Edge distortion test of the case for 80 mm disk . 107
Annex F (normative) Compliance test of the case for 80 mm disk . 109
Annex G (normative) Shutter opening force test of the case for 80 mm disk. 111
Annex H (informative) Examples of an opening cover for a Type 2 case, a Type 3 case, a Type 4
case or a Type 5 case . 112
Annex J (informative) Connection between disk holder and body of the case for 80 mm disk. 114
Annex K (informative) Transportation . 115

© ISO/IEC 2004 – All rights reserved v

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. 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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 17594 was prepared by Ecma International (as ECMA-331) and was adopted, under a special “fast-
track procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its
approval by national bodies of ISO and IEC.
vi © ISO/IEC 2004 – All rights reserved

INTERNATIONAL STANDARD ISO/IEC 17594:2004(E)

Information technology — Cases for 120 mm and 80 mm
DVD-RAM disks
Section 1 - General
1 Scope
This International Standard specifies the characteristics of a case for use with the 120 mm and 80 mm DVD-
RAM disks specified in International Standard ISO/IEC 17592. The present International Standard specifies
nine related , but different implementations of this case, viz.
Type 1 A case for a one-sided (Type 1S) or a two-sided (Type 2S) 120 mm DVD-RAM disk such that the
disk cannot be removed from the case. This case is reversible.
Type 2 A case for a one-sided (Type 1S) 120 mm DVD-RAM disk such that the disk may be removed from
the case. This case is not reversible.
Type 3 A case into which a one-sided (Type 1S) or a two-sided (Type 2S) 120 mm DVD-RAM disk may be
inserted, then used as a cartridge. This case is not reversible.
Type 4 A case for a two-sided (Type 2S) 120 mm DVD-RAM disk such that the disk may be removed from
the case. This case is reversible.
Type 5 A case into which a one-sided (Type 1S) or a two-sided (Type 2S) 120 mm DVD-RAM disk may be
inserted, then used as a cartridge. This case is reversible.
Type 6 A case for a two-sided (Type 2S) 80 mm DVD-RAM disk such that the disk may be removed from
the case. This case is reversible.
Type 7 A case for a one-sided (Type 1S) 80 mm DVD-RAM disk such that the disk may be removed from
the case. This case is not reversible.
Type 8 A case into which a two-sided (Type 2S) 80 mm DVD-RAM disk may be inserted, then used as a
cartridge. This case is reversible.
Type 9 A case into which a one-sided (Type 1S) 80 mm DVD-RAM disk may be inserted, then used as a
cartridge. This case is not reversible.
This International Standard specifies
− the environments in which the cases are to be operated and stored;
− the dimensional and mechanical characteristics of the case, so as to provide mechanical
interchangeability between data processing systems;
This International Standard provides for mechanical interchange between optical disk drives. Together with
International Standard ISO/IEC 17592 for 120 mm (4,7 Gbytes per side) and 80 mm (1,46 Gbytes per side)
DVD-RAM disks and a standard for volume and file structure, it provides for full data interchange between
data processing systems.
2 Conformance
A claim of conformance with this International Standard shall specify the Type implemented. A case shall be in
conformance with this International Standard if it meets the mandatory requirements specified herein for its
Type.
© ISO/IEC 2004 – All rights reserved 1

3 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO/IEC 17592:2004, Information technology — 120 mm (4,7 Gbytes per side) and 80 mm (1,46 Gbytes per
side) DVD Rewritable Disk (DVD-RAM)
ECMA-287:2002, Safety of electronic equipment
4 Definitions
For the purpose of this International Standard the following definitions apply:
4.1
cartridge
a device consisting of a case containing a rewritable disk
4.2
case
the housing for an optical disk, that protects the disk and facilitates disk interchange
5 Conventions and notations
5.1 Representation of numbers
A measured value is rounded off to the least significant digit of the corresponding specified value. For
instance, it implies that a specified value of 1,26 with a positive tolerance of + 0,01 and a negative tolerance of
- 0,02 allows a range of measured values from 1,235 to 1,275.
5.2 Names
The names of entities, e.g. specific sides, etc. are given a capital initial.
6 General description of the case
6.1 General description of the Type 1 case (Figure 1)
The case is a rigid protective container of rectangular shape. Sides A and B of the case are identical as far as
the features given here are concerned. References to Sides A and B of the case can be changed to B or A,
respectively. When the opening of the one is a head and spindle window for the spindle and the optical head
of the drive, that of the other is an access window for the disk clamping apparatus. 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, sensor holes, detents for
autoloading and a vertical use, gripper slots for an autochanger, label areas and side identification marks.
Sides A and B of the case have the same configuration.
6.2 General description of the Type 2 case (Figure 2)
The Type 2 case has the same features as the Type 1 case, but with some differences. The shape of the case
is different on Side A and on Side B. Side A does not need to have a location hole, an alignment hole,
Reference Surfaces, a write-inhibit hole, sensor holes and sensing areas. The case has an opening closed by
a cover. This cover can be opened. In open position, the disk can be taken out of the case. Sensor hole A1 is
originally closed. If the disk has been removed from the case, then this hole remains permanently open,
2 © ISO/IEC 2004 – All rights reserved

indicating that the original disk contained in the case has been removed at least once or has been replaced by
another disk.
6.3 General description of the Type 3 case (Figure 2)
The Type 3 case is identical with Type 2 case except that the sensor hole A1 is always open.

Case Side A
Reference surface S3
Identification mark
of Case Side A
Edge for shutter opener
Disk Side B
Shutter
Reference1 surface S1
Reference surface S4
Location hole
Sensor holes
Detent for
for disk Side B
autoloading
Write-inhibit hole
Insertion slot
for disk Side B
Spindle and head window
Label area
Alignment hole
Detent for vertical use
Gripper slot
Reference surface S2
Sensing area
01-0088-A
Figure 1 - General view of the Type 1 case, seen from Side A

© ISO/IEC 2004 – All rights reserved 3

Case Side A
Identification mark
Edge for the shutter opener of Case Side A
Disk Side B
Shutter
Detent for
autoloading
Detent for vertical use
Insertion slot
Spindle and head window
Label area
Opening cover
Gripper slot
01-0089-A
Figure 2 - General view of the Type 2 and Type 3 cases, seen from Side A
6.4 General description of the Type 4 case (Figure 3)
The Type 4 case has the same features as the Type 1 case, but with some differences. The case has an
opening closed by a cover. This cover can be opened. In open position, the disk can be taken out of the case.
If the disk has been removed from the case, then the sensor hole A1 and B1 remain permanently open,
indicating that the original disk contained in the case has been removed at least once or has been replaced by
another disk.
6.5 General description of the Type 5 case (Figure 3)
The Type 5 case is identical with Type 4 case except that the sensor hole A1 and B1 are always open.

4 © ISO/IEC 2004 – All rights reserved

Case Side A
Reference surface S3
Side A identification mark
Edge for shutter opener
Disk Side B
Shutter
Reference surface S1
Reference surface S4
Location hole
Detent for
Sensor holes
Autoloading
for disk Side B
Write-inhibit hole
Insertion slot
for disk Side B
Spindle and head window
Label area
Opening cover
Reference surface S2
Alignment hole
Detent for vertical use
Gripper slot
Sensing area
01-0045-A
Figure 3 - General view of the Type 4 and Type 5 cases, seen from Side A

6.6 General description of the Type 6 case (Figure 4)
The case is a rigid protective container of rectangular shape. It consists of a body and a disk holder. This disk
holder can be taken out of the body and then the disk can be taken out of the case. Sensor hole A1 and B1
are originally closed. If the disk holder has been taken out of the body, then these holes remain permanently
open, indicating that the original disk contained in the case has been removed at least once or has been
replaced by another disk. Sides A and B of the case are identical as far as the features given here are
concerned. References to Sides A and B of the case can be changed to B or A, respectively. When the
opening of the one is a head and spindle window for the spindle and the optical head of the drive, that of the
other is an access window for the disk clamping apparatus. 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, sensor holes, detents for autoloading and a vertical
use, gripper slots for an autochanger, label areas and side identification marks.
Sides A and B of the case have the same configuration.
6.7 General description of the Type 7 case (Figure 5)
The Type 7 case has the same features as the Type 6 case, but with some differences. The shape of the case
is different on Side A and on Side B. Side A does not need to have a location hole, an alignment hole,
Reference Surfaces, a write-inhibit hole, sensor holes and sensing areas. Sensor hole A1 is originally closed.
If the disk holder has been taken out of the body, then this hole remains permanently open, indicating that the
© ISO/IEC 2004 – All rights reserved 5

original disk contained in the case has been removed at least once or has been replaced by another disk.
Side B of this case shall not have label area.
6.8 General description of the Type 8 case (Figure 4)
The Type 8 case is identical with Type 6 case except that the sensor hole A1 and B1 are always open.
6.9 General description of the Type 9 case (Figure 5)
The Type 9 case is identical with Type 7 case except that the sensor hole A1 is always open.

Reference surface S4
Case Side A
Disk Side B
Label area
Shutter
Reference surface S3
Reference surface S2
Alignment hole
Detent for
autoloading
Disk holder
Spindle and head window
Side A identification mark
Write-inhibit hole
for disk Side B
Location hole
Mis-insertion Sensor holes for
protection slot disk Side B
Reference surface S1
Detent for vertical use
01-0046-A
Figure 4 - General view of the Type 6 and Type 8 cases, seen from Side A

6 © ISO/IEC 2004 – All rights reserved

Case Side A
Disk Side B
Label area
Shutter
Label area
Detent for autoloading
Disk holder
Mis-insertion protection slot
Side A identification mark
Spindle and head window
Mis-insertion protection slot
Detent for vertical use
01-0047-A
Figure 5 - General view of the Type 7 and Type 9 cases, seen from Side A
7 General requirements
7.1 Environments
7.1.1 Test environment
The test environment is the environment where the air immediately surrounding the case has the following
properties:
Temperature: 23 °C ± 2 °C
Relative humidity: 50 % ± 5 %
Atmospheric pressure: 86 kPa to 106 kPa
No condensation on or in the case or cartridge shall occur. Before testing, the case or cartridge shall be
conditioned in this environment for 48 hours minimum.
Unless otherwise stated, all tests and measurements shall be made in this test environment.
7.1.2 Operating environment
The case shall meets all requirements of this International Standard in the specified test environment and
provide mechanical interchange over the specified ranges of environmental parameters in the operating
environment. When the case according to this International Standard contains a DVD-RAM disk according to
Standard ISO/IEC 17592, they constitute together a cartridge. This cartridge shall meet the requirements of
this clause and provides for data interchange.
© ISO/IEC 2004 – All rights reserved 7

The operating environment is the environment where the air immediately surrounding the case or cartridge
has the following properties:
Temperature: 5 °C to 60 °C
Relative humidity: 3 % to 85 %
3 3
Absolute humidity: 1 g/m to 30 g/m
Temperature gradient: 10 °C /h max.
Relative humidity gradient: 10 %/h max.
No condensation on or in the case or cartridge shall occur. If the case or cartridge has been exposed to
conditions outside those specified in this clause, it shall be acclimatized in the operating environment for at
least 2 h before use.
7.1.3 Storage environment
The storage environment is defined as an environment where the air immediately surrounding the case or
cartridge has the following properties.
Temperature: -10 °C to 50 °C
Relative humidity: 3 % to 85 %
3 3
Absolute humidity: 1 g/m to 30 g/m
Atmospheric pressure: 75 kPa to 106 kPa
Temperature gradient: 10 °C /h max.
Relative humidity gradient: 10 %/h max.
No condensation on or in the case or cartridge shall occur.
7.1.4 Transportation
This does not specify requirements for transportation; guidance is given in annex E.
7.2 Temperature shock
The case shall withstand a temperature shock of up to 20°C when inserted into, or removed from, the drive.
7.3 Safety requirement
The case shall satisfy the safety requirements of Standard ECMA-287, when used in the intended manner or
in any foreseeable use in an information processing system.
7.4 Flammability
The case shall be made from materials shall be of materials that, if ignited from a match flame, shall not
continue to burn in a still carbon dioxide atmosphere.

8 © ISO/IEC 2004 – All rights reserved

Section 2 - Dimensional and mechanical characteristics of the case for 120 mm disks
8 Dimensional characteristics
The dimensions of the case shall be referred to three orthogonal Reference Planes X, Y and Z. The case shall
be constrained such that four reference surfaces S1 to S4 on Side B of the case lie in Reference Plane Z. The
intersection of the three planes defines the centre of the location hole. The centre of the alignment hole shall
lie on the intersection of Reference Planes X and Z. Refer to annex A. A dimension of a feature referenced to
one of the planes is the shortest distance from the feature to the plane.
Side A of the Type 1, Type 4 and Type 5 cases are referred to as the three orthogonal Reference Planes X, Y'
and Z', where
− Y' is a plane parallel to Reference Plane Y at a nominal distance of 102,0 mm,
− Z' is a plane parallel to Reference Plane Z at a nominal distance of 8,0 mm.
8.1 Dimensions of the Type 1 case
The dimensions of the Type 1 case shall be measured in the test environment (see 7.1.1). The dimensions of
the case in an operating environment (see 7.1.2) can be estimated from the dimensions specified in this
clause.
8.1.1 Overall dimensions (Figure 6)
The total length of the case shall be
L = 135,5 mm ± 0,4 mm
At a width
L = 3,6 mm min
the distance from the top of the case to Reference Plane X shall be
+ 0,3 mm
L = 112,5 mm
- 0,2 mm
from the left-hand and right-hand edges of the case.
The distance from the bottom of the case to Reference Plane X shall be
L = 23,0 mm ± 0,2 mm.
The total width of the case shall be
+ 0,0 mm
L = 124,6 mm
- 0,5 mm
The distance from the left-hand side of the case to Reference Plane Y shall be
+ 0,2 mm
L = 113,3 mm
- 0,4 mm
The distance from the right-hand side of the case to Reference Plane Y shall be
+ 0,1 mm
L = 11,3 mm
- 0,3 mm.
The two corners of the top shall be rounded off with a radius
R = 4,0 mm ± 0,2 mm
© ISO/IEC 2004 – All rights reserved 9

centred at
L = 4,0 mm ± 0,1 mm
from the edge of the case and
L = 3,5 mm ± 0,1 mm
from the top of the case.
The two corners of the bottom shall be rounded off with a radius
R = 4,0 mm ± 0,2 mm.
In the zones delimited by
L = 6,0 mm
from the left-hand and right-hand edges of the case, there shall be the continuous guide areas running from
the top to Reference Plane X of the case, with a width
L = 0,8 mm min.
The thickness of the case shall be
+ 0,2 mm
L = 8,0 mm
- 0,1 mm.
The eight long edges of the case shall be rounded off with a radius
R = 0,5 mm ± 0,1 mm.
8.1.2 Location hole (Figure 6)
The centre of the location hole shall coincide with the intersection of Reference Planes X, Y and Z.
The diameter of the hole shall be
+ 0,05 mm
D = 4,00 mm
- 0,00 mm
Its depth shall be
L = 1,2 mm min.
The room below the location hole shall be free by
L = 5,0 mm min.
below Reference Plane Z
The diameter of the free room shall be at least equal to D .
The lead-in edges shall be rounded off with a radius
R = 0,5 mm ± 0,1 mm.
8.1.3 Alignment hole (Figure 6)
The centre of the alignment hole shall lie on the intersection of the Reference Planes X and Z at a distance
L = 102,0 mm ± 0,2 mm
from Reference Plane Y.
The alignment hole shall have a substantially rectangular shape. Its dimensions shall be
+ 0,05 mm
L = 4,00 mm
0,00 mm
10 © ISO/IEC 2004 – All rights reserved

+ 0,2 mm
L = 5,6 mm
0.00 mm
Its depth shall be equal to L . The room below the alignment hole shall be free by at least L . The
113 114
dimensions of the free room shall be at least L and L .
116 117
The lead-in edges shall be rounded off with a radius R .
8.1.4 Reference surfaces (Figure 7)
There shall be four reference surfaces S1, S2, S3 and S4 on Side B of the case.
Surfaces S1 and S2 shall be circular with a diameter
D = 7,0 mm min.
S1 shall be centred on the location hole, and S2 shall be centred on the alignment hole.
Surfaces S3 and S4 shall be rectangular with dimensions
L = 8,2 mm max.
L = 110,2 mm max.
from Reference Plane Y and
L = 87,0 mm max.
L = 108,0 mm min.
from Reference Plane X, except in the areas of the detents for autoloading.
8.1.5 Insertion slots (Figure 8)
The case shall have two symmetrical insertion slots.
The bottom of the slots shall be at a distance
L = 60,0 mm ± 0,2 mm
from Reference Plane X.
The depth measured from the edge of the case shall be
+ 0,2 mm
L = 2,0 mm
- 0,0 mm.
The side of the insertion slots parallel to Reference Plane Z shall be at a distance
L = 2,5 mm ± 0,1 mm
from Reference Plane Z. The width of the insertion slots shall be
+ 0,2 mm
L = 3,0 mm
- 0,0 mm.
The slots shall have a lead-in slope defined by
L = 7,0 mm ± 0,2 mm
from the top of the case and an angle
α = 7,5° ± 1,0°.
© ISO/IEC 2004 – All rights reserved 11

8.1.6 Detents (Figure 8)
The case shall have two symmetrical detents intended for autoloading. The detents shall be through Side A
and Side B.
The position and dimensions of the detents shall be
R = 0,5 mm max.
L = 100,5 mm ± 0,3 mm
L = 93,0 mm ± 0,3 mm
L = 3,3 mm ± 0,1 mm
L = 2,5 mm ± 0,1 mm.
The outside edges of the detents shall be rounded off with a radius
R = 0,5 mm ± 0,1 mm.
The bottom of the case shall have two symmetrical detents intended for clamping a cartridge in case of
vertical use. Their dimensions shall be
L = 3,0 mm ± 0,1 mm
L = 3,0 mm ± 0,1 mm
L = 1,0 mm ± 0,1 mm
The centre of one of these detents shall lie on Reference Plane Y and the centre of the other hall be at a
distance
L = 1
...