ECMA-357 标准

ECMA-375
1st Edition / December 2006
Case for 120 mm
HVD-ROM disk
Standard
ECMA-375
1st Edition / December 2006
Case for 120 mm HVD-ROM
disk
Ecma International
F
Standard ECMA-375
Rue du Rhône 114
CH-1204 Geneva
T/F: +41 22 849 6000/01
www.ecma-international.org
.
Introduction
In October 2004 a group of Companies, known as the HVD Alliance, proposed to Ecma to develop a
standard for the first member of a family of holographic media. Ecma adopted this project and Ecma
Technical Committee TC44 was established for the standardization of holographic media.
This Standard ECMA-375 is the first standard for a read-only holographic disk case.
This Ecma Standard has been adopted by the General Assembly of December 2006.
Table of contents
Sect io n 1 - G en eral
1
1
Scop e
1
2
Conf orman ce
1
3
Ref eren ces
1
4
Def in it io ns
1
4.1
c ar tr idge
1
4.2
c as e
1
4.3
c as e r ef er enc e plane
1
4.4
hologr aphic dis k
1
4.5
Hologr aphic Dis k Car tr idge ( HDC)
1
4.6
Read O nly Mem or y ( RO M) dis k
2
4.7
s pindle
2
5
Conv en t io n s an d n o t at io n s
2
5.1
Repr es entation of num ber s
2
5.2
Nam es
2
6
Acro nyms
2
7
G en eral d escrip t io n
2
8
G eneral requ iremen t
2
8.1.1
8.1.2
8.1.3
O per ating envir onm ent
Stor age envir onm ent
T r ans por tation
2
3
3
8.2
T em per atur e s hoc k
3
8.3
Saf ety r equir em ents
3
8.4
Flam m ability
3
Sect io n 2 - M ech an ical and p hysical ch aract erist ics
3
9
3
Dimen sio n al, mech anical, an d p h ysical charact eristics o f th e case
9.1
G ener al des c r iption of the c as e
3
9.2
Ref er enc e ax es and c as e r ef er enc e plane
3
9.3
Cas e dr awings
3
-i-
9.4
Dim ens ions of the c as e
9.4.1
O ver all dim ens ions
9.4.2
Loc ation hole
9.4.3
Alignm ent hole
9.4.4
Surf ac es on Cas e Ref er enc e Plane P
9.4.5
Ins er tion s lots and detent f eatur es
9.4.6
G ripper s lots
9.4.7
W r ite- inhibit hole
Media identif ic ation s ens or ar eas
9.4.8
9.4.9
Head and m otor windows
9.4.10 Shutter
9.4.11 Shutter unloc k ing lever s
9.4.12 Slider f or s hutter opener
9.4.13 F eatur e to pr event ins er tion into UDO , MO and W O drives
9.4.14 Us er label ar eas
4
4
5
5
5
6
6
7
7
7
8
8
9
10
10
9.5
Mec hanic al c har ac ter is tic s
9.5.1
Mater ials
9.5.2
Mas s
9.5.3
Edge dis tor tion
9.5.4
Com plianc e
9.5.5
Shutter opening f or c e
9.5.6
Lever s unloc k ing f or c es
10
10
10
10
10
10
10
9.6
Dr op tes t
10
9.7
Elec tr o- s tatic dis c har ge tes t
11
10
In t erface bet w een t h e case used as cartrid g e an d a driv e
25
10.1
Capture c ylinder
25
10.2
Dis k pos ition in oper ating c ondition
25
An n ex A ( normat iv e)
Ed ge dist o rt io n t est
27
An n ex B ( normat iv e)
Co mp lian ce t est
29
Annex C ( n o rmat iv e)
Elect ro - st at ic d isch arg e t est
33
An n ex D ( inf ormat iv e)
An n ex E (informat iv e)
O f f ice en v iro n men t
35
T ran sp ort at io n
37
- ii -
Section 1 - General
1
Scope
This Ecma Standard specifies the characteristics of a case for use with a Read-only Holographic
Versatile Disc (HVD-ROM).
This Ecma Standard specifies
the environments in which the case is to be operated and stored;
the dimensional and mechanical characteristics of the case, so as to provide mechanical
interchangeability between data processing systems.
This Ecma Standard provides for mechanical interchange between holographic disk drives.
Together with a standard for 120 mm HVD-ROM disk and a standard for volume and file structure, it
provides for full data interchange between data processing systems.
2
Conformance
A disk case shall be in conformance with this Ecma Standard if it meets all mandatory requirements
specified therein.
3
References
The following standards contain provisions, which through reference in this text, constitute
provisions of this Ecma Standard. At the time of publication, the editions indicated were valid. All
standards are subjected to revision, and parties to agreements based on this Ecma Standard are
encouraged to investigate the possibility of applying the most recent editions of the following
standards.
4
ECMA-287 (2002)
Safety of electronic equipment
ECMA-328 (2001)
Detection and measurement of chemical emissions from electronic equipment
Definitions
For the purpose of this Ecma Standard the following definitions apply.
4.1
cartridge
A device consisting of a case containing a disk.
4.2
case
The housing that protects the disk and facilitates disk interchange.
4.3
case reference plane
A plane to which the dimensions of the case are referred.
4.4
holographic disk
A disk that will accept and retain information in a holographic storage layer.
4.5
Holographic Disk Cartridge (HDC)
A device consisting of a case containing a holographic disk.
-1-
4.6
Read Only Memory (ROM) disk
A disk which can be only read.
4.7
spindle
The part of the disk drive that contacts the disk.
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 surfaces, areas, etc. are given a capital initial.
6
Acronyms
HDC
HVD
HVD-ROM
MO
UDO
WO
7
Holographic Disk Cartridge
Holographic Versatile Disc
Holographic Versatile Disc Read Only Memory
Magneto Optical
Ultra Density Optical
Write Once
General description
The case, which is the subject of this Ecma Standard, is a protective enclosure for a disk. It has
access windows on each side covered by a shutter. The windows are automatically uncovered by
the drive when the case is inserted into it.
8
General requirement
8.1.1
O p eratin g en v iron men t
The case conforming to the present standard containing a HVD-ROM disk, shall constitute a
cartridge that shall meet the requirements of this clause.
The cartridge shall provide for mechanical and data interchange in the following operating
environment, defined as the environment of air immediately surrounding the cartridge:
Temperature
35 °C ± 2 °C
Atmospheric pressure
60 kPa to 106 kPa
Relative humidity
20 % to 80 %
Absolute humidity
25 g/m max.
Air cleanliness
Office environment (see Annex D)
3
No condensation on or in the cartridge shall occur. If the cartridge has been exposed to
conditions outside those specified in this clause, it shall be acclimatized in the operating
environment for a time at least equal to the period during which it has been out of the
operating environment, up to a maximum of 24 h.
-2-
8.1.2
St o rag e en v iro n men t
The case used as a cartridge, without any protective enclosure, shall not be stored in an
environment outside the range allowed for storage.
The storage environment, defined as an environment where the air is immediately surrounding
the cartridge, shall have the following properties for a cartridge containing a HVD-ROM disk:
Temperature
16 °C to 32 °C
Atmospheric pressure
60 kPa to 106 kPa
Relative humidity
20 % to 80 %
Absolute air humidity
25g/m max.
3
No condensation on or in the cartridge shall occur.
8.1.3
8.2
T ransp o rt at io n
This Ecma Standard does not specify requirements for transportation. Guidance for
transportation is given in Annex E.
Temperature shock
The case used as a cartridge shall withstand a temperature shock of up to 10 °C when inserted
into, or removed from, the drive.
8.3
Safety requirements
The case shall satisfy the safety requirements of Standards ECMA-287 and ECMA-328, when
used in the intended manner or in any foreseeable use in an information processing system.
8.4
Flammability
The case and its components shall be made from materials that comply with the flammability
class for HB materials, or better, as specified in Standard ECMA-287.
Section 2 - Mechanical and physical characteristics
9
9.1
Dimensional, mechanical, and physical characteristics of the
case
General description of the case
The case (see Figure 1) is a protective container of rectangular shape. It has windows on each
side to allow the spindle of the drive to clamp the disk by its centre hole and to allow the head to
access the disk. A shutter uncovers the windows upon insertion into the drive, and automatically
covers them upon removal from the drive. The case has media identification, write-inhibit,
mis-insertion features, detent for autoloading, gripper slots for an autochanger, label areas, and
side identification inscriptions.
9.2
Reference axes and case reference plane
There is a Case Reference Plane P on side A of the case. The Case 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.
9.3
Case draw ings
The case is represented schematically by the following drawings.
Figure 1 shows a composite drawing of Side A of the case in isometric form, with the major
features identified from this side.
-3-
Figure 2 shows the envelope of the case with respect to a location hole at the intersection of the
X and Y axes of Case Reference Plane P.
Figure 3 shows the surfaces S1, S2, S3 and S4 that establish the Case Reference Plane P
located on side A.
Figure 3a shows the details of surface S3.
Figure 4 shows the details of the insertion slots and detents.
Figure 5 shows the gripper slots, used for automatic handling.
Figure 6 shows the write-inhibit hole.
Figure 7 shows the media identification sensor areas.
Figure 8 shows the head and motor windows.
Figure 9 shows the shutter opening features.
Figure 9a shows the locked/unlocked shutter levers configurations.
Figure 9b shows the shutter slider.
Figures 10a and 10b show the user label areas.
9.4
9.4.1
Dimensions of the case
O v erall d imen sio n s
The total length of the case (see Figure 2) shall be
L 1 = 153,0 mm ± 0,4 mm
The distance from the top of the case to the reference axis X shall be
L 2 = 127,0 mm ± 0,3 mm
The distance from the bottom of the case to the reference axis X shall be
L 3 = 26,0 mm ± 0,3 mm
The total width of the case shall be
+ 0,0 mm
L 4 = 135,0 mm
- 0,6 mm
The distance from the left-hand side of the case to the reference axis Y shall be
+ 0,0 mm
L 5 = 128,5 mm
- 0,5 mm
The distance from the right-hand side of the case to the reference axis Y shall be
L 6 = 6,5 mm ± 0,2 mm
The width shall be reduced on the top by the radius
R1 = L4
originating from a point defined by L 5 and
L 7 = 101,0 mm ± 0,3 mm
The two corners of the top shall be rounded with a radius
R 2 = 1,0 mm ± 0,5 mm
and the two corners at the bottom with a radius
R 3 = 3,0 mm ± 0,5 mm
-4-
The thickness of the case shall be
L 8 = 11,00 mm ± 0,30 mm
The eight long edges of the case shall be rounded with a radius
R 4 = 1,0 mm max.
9.4.2
L o cat io n ho le
The centre of the location hole (see Figure 2) shall coincide with the intersection of the
reference axes X and Y. It shall have a square form with a side length of
+ 0,00 mm
L 9 = 4,10 mm
- 0,06 mm
held to a depth of
L 10 = 2,4 mm ± 0,2 mm
The lead-in edges shall be rounded with a radius
R 5 = 0,5 mm max.
9.4.3
Alig n ment ho le
The centre of the alignment hole (see Figure 2) shall lie on reference axis X at a distance of
L 11 = 122,0 mm ± 0,2 mm
from the reference axis Y.
The dimensions of the hole shall be
+ 0,00 mm
L 12 = 4,10 mm
- 0,06 mm
and
+ 0,2 mm
L 13 = 5,0 mm
- 0,0 mm
held to a depth of L 10.
The lead-in edges shall be rounded with radius R 5 .
9.4.4
Su rf aces o n Case Ref erence Plan e P
The Case Reference Plane P (see Figure 3) located on Side A of the case shall contain four
surfaces (S1, S2, S3 and S4) on that side of the case, specified as follows:
- Two circular surfaces S1 and S2:
Surface S1 shall be a circular area centred on the square location hole and have a diameter
of
D 1 = 9,0 mm min.
Surface S2 shall be a circular area centred on the rectangular alignment hole and have a
diameter of
D 2 = 9,0 mm min.
- Two elongated surfaces S3 and S4 that follow the contour of the case:
Surfaces S3 and S4 are shaped symmetrically on the two top sides of the case.
Surface S3 (see also Figure 3a) on the right hand side shall extend from a height defined by
distance L 7 from the reference axis X to
L 14 = 26,0 mm ± 0,3 mm
-5-
with a width of
L 15 =1,35 mm ± 0,2 mm
and a right hand side boundary with radius
R 6 = 132,65 mm
The top surface of the case shall not be higher than the Reference Plane on a width
L 16 = 4,15 mm min.
located at the left hand boundary of S3.
9.4.5
In sertio n slo t s an d det en t f eat u res
The case shall have two insertion slots with embedded detent features
Figure 4). These slots shall be symmetrical relatively to the two long edges of the case.
(see
The slots shall have a length of
L 17 = 44,0 mm ± 0,3 mm
a width of
+ 0,3 mm
L 18 = 6,0 mm
- 0,0 mm
and a depth of
L 19 = 3,0 mm ± 0,1 mm
located
L 20 = 2,5 mm ± 0,2 mm
from Case Reference Plane P.
The slots shall have a lead-in chamfer given by
L 21 = 0,5 mm max.
L 22 = 5,0 mm max.
The detent notch shall be a semi-circle of radius
R 7 = 3,0 mm ± 0,2 mm
with the origin given by
L 23 = 13,0 mm ± 0,3 mm
L 24 = 2,0 mm ± 0,1 mm
L 25 = 114,0 mm ± 0,3 mm
The dimensions L 2 , L 23 , and L 25 are interrelated; their values shall be such so that they are all
three within specification.
9.4.6
G rip p er slo t s
The case shall have two symmetrical gripper slots (see Figure 5) with a depth of
L 26 = 5,0 mm ± 0,3 mm
from the edge of the case and a width of
L 27 = 6,0 mm ± 0,3 mm
The upper edge of a slot shall be
L 28 = 12,0 mm ± 0,3 mm
above the bottom of the case.
-6-
9.4.7
W rit e- in h ibit h o le
The case shall have a write-inhibit hole (see Figure 6). The case shall include a device for
opening and closing this hole.
When writing on the disk is not allowed, the write-inhibit hole shall be open all through the
case. It shall have a diameter
D 3 = 4,0 mm min.
Its centre shall be specified by
L 29 = 8,0 mm ± 0,2 mm
L 30 = 111,0 mm ± 0,3 mm
on Side A of the case.
When writing is allowed on the disk, the write-inhibit hole shall be closed, at a depth of typically
L 10 , i.e. the wall thickness of the case. In this state, the opposite side of the hole, at Side B of
the case, shall be closed and not recessed from the external surface of this side by more than
L 31 = 0,4 mm max.
9.4.8
M edia iden t if icat io n sen sor areas
Four media identifications sensor areas having close/open centred holes are used for
identification of holographic cases/cartridges.
These identification areas (see Figure 7) shall be located on Side A of the case with a diameter
+ 0,3 mm
D 4 = 4,0 mm
- 0,0 mm
and centres specified by
L 32 = 19,5 mm ± 0,2 mm and L 30
L 33 = 105,0 mm ± 0,3 mm
L 34 = 17,0 mm ± 0,2 mm
L 35 = 11,0 mm ± 0,2 mm
A hole centred in one of these identification areas shall be deemed open if it extends through
the case with a diameter D 4 .
A hole is deemed to be closed, when the identification area surface is not deviating from Case
Reference Plane P by more than 0,3 mm.
The case specified in this Ecma Standard shall have one open hole located in the sensor area
specified by L 32 and L 35 .
9.4.9
Head and mo t o r w in do w s
The case shall have a window on each side to allow the spindle of the drive to clamp the disk
by its centre hole and to allow the head to access the disk (see Figure 8). The dimensions are
referenced to a centreline, located at a distance of
L 36 = 61,0 mm ± 0,2 mm
to the left of reference axis Y.
The width of the head access shall be defined by
L 37 = 16,0 mm min.
L 38 = 16,0 mm min.
and its height shall extend to
L 39 = 113,2 mm min.
-7-
The two inside corners shall be rounded with a radius of
R 8 = 3,0 mm max.
The motor spindle access shall have a diameter of
D 5 = 32,0 mm min.
and its centre shall be defined by L 36 and
L 40 = 43,0 mm ± 0,2 mm
9.4.10
Sh u t ter
The case shall have one spring-loaded, unidirectional shutter (see Figure 1 and Figure 9),
designed to completely cover the head and motor windows when closed. In the closed position
the shutter shall be locked.
+1,4 mm
A shutter movement of 38,7 mm
shall ensure that the head and motor windows are
-0,7 mm
opened to the minimum size specified in 9.4.9.
When unlocked, 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 of the case and shutter shall not exceed L 8 .
The top surface of the shutter shall not be over the top edge of the case.
9.4.11
Sh u t ter u n lo ckin g lev ers
Unlocking of the shutter shall be only obtained by a combined action on two spring-loaded
levers configured as shown on Figures 9 and 9a.The levers shall be designed to be operated
by a mechanism of the drive. The first lever shall be displaced by a defined distance (L 46 ) to
unlock the second lever, which shall be then displaced by another defined distance (L 57 ) to
unlock the shutter, which can then be pushed open.
The locked and unlocked configurations of the levers shall be as shown on Figure 9a.
The first lever shall be located on the right hand edge of Side A of the case.
When the shutter is locked in its closed position, the distances from the extremity of the first
lever to references axes X and Y shall be
L 41 = 103,6mm ± 0,3 mm
L 42 = 6,0 mm ± 0,2 mm
The height of the first lever shall be
L 43 = 5,6mm ± 0,2 mm
Its centre shall be
L 44 = 5,5 mm± 0,2 mm
from the Case Reference Plane P of the case, and its width shall be
L 45 = 4,0 mm ± 0,2 mm
The first lever displacement to unlock the second lever shall be
+1,2 mm
L 46 = 2,0 mm
-0,5 mm
A rectangular sub-slot shall be located in the insertion slot on each side of the lever (see
Figure 9a)
The sub-slot shall have a length of
L 47 = 38,0 mm ± 0,3 mm
with a width of
L 48 = 2,80 mm ± 0,15 mm
-8-
A symmetrical sub-slot shall be located in the left-hand side insertion slot.
The distance from the bottom of the right-hand side sub-slot to reference axis Y shall be
+ 0 mm
L 49 = 2,8 mm
- 0,2 mm
and the distance from the bottom of the left-hand side sub-slot to the reference axis Y shall be
+ 0 mm
L 50 = 124,8 mm
-0,4 mm
The second lever shall be located on side A of the case.
This lever shall be moved by its rectangular hole.
The distances from the centre of the rectangular hole to the reference axes X and Y shall be
L 51 = 117,7 mm ± 0,3 mm
L 52 = 11,3 mm ± 0,3 mm
The length of the rectangular hole shall be
L 53 = 4,2mm ± 0,2 mm
The width of the rectangular hole shall be
L 54 = 4,1mm ± 0,2 mm
The distance from the top of the rectangular hole to the Case Reference Plane P shall be
L 55 = 2,5 mm± 0,2 mm
The thickness of the second lever shall be
L 56 = 6,0 mm± 0,2 mm
The second lever displacement to unlock the shutter shall be
+1,3 mm
L 57 = 2,2mm
-0,5 mm
9.4.12
Slid er f o r sh ut t er o p en er
The shutter shall have one slider (see Figures 9 and 9b) that can be operated by the shutter
opener of the drive to open the shutter, after unlocking by the two levers. The slider shall be
dimensioned as follows:
When the shutter is closed, the right-hand of projection of the slider used to push the shutter
open shall be located at a distance of
L 58 = 3,5 mm ± 0,3 mm
from reference axis Y.
The width of the projection of the slider shall be
L 59 = 2,0 mm ± 0,2 mm
The height of the projection of the slider shall be
L 60 = 3,2 mm ± 0,2 mm
The centre of the projection of the slider from the Case Reference Plane P of the case shall be
L 61 = 5,5 mm ± 0,2 mm
The length of the projection of the slider shall be
L 62 = 3,5 mm max.
The top of the projection of the slider shall be at a distance L 2 of the reference axis X.
-9-
9.4.13
F eat u re t o p rev ent in sert io n in t o UDO , M O an d W O d riv es
The top edge side of the shutter shall have no slot (see Figures 1 and 9) so as to prevent from
insertion into UDO, MO, WO drives using cartridges conforming to Standards ECMA-322,
ECMA-350, ECMA-280, ECMA-238, ECMA-195, ECMA-184, ECMA-183 and ECMA-153.
9.4.14
User lab el areas
The case shall have the following minimum areas for user labels (see Figures 10a and 10b):
on Sides A and B:
25 mm x 79 mm
on the bottom side:
7,0 mm x 115,0 mm
These areas shall be recessed by 0,2 mm min. Their positions are specified by the following
dimensions and relations between dimensions.
L 63 = 14,5 mm min.
L 64 – L 63 = 79 mm min.
L 66 – L 65 = 25 mm min.
L 4 – L 67 – L 68 = 115,0 mm min.
L 8 – L 69 – L 70 = 7,0 mm min.
9.5
Mechanical characteristics
All requirements of this clause shall be met in the operating environment.
9.5.1
M aterials
The case shall be constructed from any suitable materials such that it meets the requirements
of this Ecma Standard.
9.5.2
M ass
The mass of the case shall not exceed 200 g.
9.5.3
Ed g e d ist o rt io n
The case shall be such that the cartridge shall meet the requirement of the edge distortion test
defined in Annex A.
9.5.4
Comp lian ce
The case shall be such that the cartridge shall meet the requirement of the compliance test
defined in Annex B. The requirement guarantees that a cartridge can be constrained in the
proper plane of operation within the drive.
9.5.5
Sh u t ter o p en in g f o rce
The spring force on the shutter shall be such that the force required to open the shutter does
not exceed 2 N. It shall be sufficiently strong to close a free-sliding shutter, irrespective of the
orientation of the case.
9.5.6
L ev ers u n lo ckin g f orces
The spring forces on the levers shall be sufficiently strong to maintain the shutter locked in any
orientations of the case, and such that the force exerted on each lever to unlock the shutter
does not exceed 1N.
9.6
Drop test
The case shall be such that the Holographic Disk Cartridge shall withstand dropping on each
surface and on each corner from a height of 0,75 m onto a concrete floor covered with a vinyl
layer 2 mm thick. The cartridge shall withstand all such impacts without any functional failure.
The write-inhibit switch shall not move to change the state (open or closed) of the write-inhibit
hole during the drop test.
- 10 -
9.7
Electro-static discharge test
The case shall meet the electro-static discharge requirements specified in Annex C.
- 11 -
Figure 1 – Case seen from Side A
- 12 -
Figure 2 – Overall dimensions and reference axes seen from Side A
- 13 -
Figure 3 – Surfaces S1, S2, S3 and S4 of the Case Reference Plane P on Side A
- 14 -
Figure 3a – Details of surface S3
- 15 -
Figure 4 – Insertion slots and detents
- 16 -
Figure 5 – Gripper slots
- 17 -
Figure 6 – Write-inhibit hole seen from Side A
- 18 -
Figure 7 – Media identification sensor areas on Side A
- 19 -
Figure 8 – Head and motor windows on Side A
- 20 -
Figure 9 – Shutter opening features seen from Side A
- 21 -
Shutter closed and locked
Shutter closed and unlocked
Figure 9a – Locked/unlocked shutter levers configurations
- 22 -
Figure 9b – Shutter slider seen from Side A
- 23 -
Figure 10a – User label area on Side A
Figure10b – User label area on bottom surface
- 24 -
10
10.1
Interface between the case used as cartridge and a drive
Capture cylinder
The capture cylinder (see Figure 11) is defined as the volume in which the spindle can expect the
centre of the external side of the hole of the disk to be, just prior to capture. The size of the
cylinder limits the allowable play of the disk inside its cavity in the case. This cylinder is referred
to perfectly located and perfectly sized alignment and location pins in the drive, and includes
tolerances of dimensions of the case and the disk between the pins mentioned and the said
centre of the hole of the disk. The bottom of the cylinder is parallel to the Case Reference Plane
P, and shall be located at a distance of
L 71 = 2,45 mm min.
above the Case Reference Plane P of the case. The top of the cylinder shall be located at a
distance of
L 72 = 6,45 mm max.
above the Case Reference Plane P. The diameter of the cylinder shall be
D 6 = 2,8 mm max.
Its centre shall be defined by the nominal values of L 36 and L 40 (see 9.4.9).
10.2
Disk position in operating condition
The case shall be such that when the disk in the case is in the operating condition within the drive
(see Figure 11), it shall not contact the case when the axis of rotation is within a circle of
diameter
D 7 = 0,2 mm max.
and a centre given by the nominal values of L 36 and L 40 (see 9.4.9),
and the position of the pit layer shall be
L 73 = 4,8 mm ± 0,15 mm
above the Case Reference Plane P of the case.
- 25 -
Figure 11 – Capture cylinder
- 26 -
Annex A
(normative)
Edge distortion test
A.1 Purpose
The distortion test checks if the case is free from unacceptable distortion and protrusions along its
edges. The test is made by causing the cartridge to pass through the vertical slot of a gauge while
applying a specified force in addition to the gravitational pull.
A.2 Distortion gauge construction
The gauge shall be made of a suitable material, e.g. of chrome-plated carbon steel. The inner
surfaces shall be polished to a surface finish of 5 Km peak-to-peak.
A.3 Distortion gauge dimensions
The dimensions shall be as follows (see Figure A.1):
A = 155,0 mm
B = 136,0 mm ± 0,1 mm
C = 10,0 mm ± 0,1 mm
D = 11,40 mm ± 0,01 mm
E = 11,60 mm min.
A.4 Requirement
When the cartridge is inserted vertically into the gauge, a vertical downward force F of 2,7 N
maximum, applied to the centre of the top edge of the cartridge, shall cause the cartridge to pass
through the gauge.
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Figure B.1 – Distortion gauge
- 28 -
Annex B
(normative)
Compliance test
B.1 Purpose
The compliance test checks the flatness and flexibility of the case by forcing the four reference
surfaces of the cartridge into a plane.
B.2 Reference surfaces
The location of the four reference surfaces S1, S2, S3, and S4 is defined in 9.4.4 and Figure 3.
B.3 Compliance gauge
The test gauge consists of a base plate on which four posts P1, P2, P3, and P4 are fixed so as to
correspond to the surfaces S1, S2, S3, and S4 respectively (see Figure B.1). The dimensions are as
follows (see Figures B.2 and B.3):
L a = 122,0 mm ± 0,2 mm
L b = 130,0 mm ± 0,5 mm
L c = 101,0 mm ± 0,5 mm
D a = 6,50 mm ± 0,01 mm
+ 0,00 mm
D b = 4,00 mm
- 0,02 mm
D c = 5,50 mm ± 0,01 mm
H a = 1,0 mm ± 0,1 mm
H b = 2,0 mm max.
After assembly, the upper annular surfaces of the four posts shall lie between two horizontal planes
spaced 0,01 mm apart.
B.4 Test conditions
The cartridge shall be placed with its reference surfaces onto the posts of the horizontal gauge. A
vertical down force F of 0,4 N shall be exerted on the cartridge opposite each of the four posts.
B.5 Requirement
Under the conditions of B.4, any three of the four surfaces S1 to S4 shall be in contact with the
annular surface of respective posts. Any gap between the remaining surface S and the annular
surface of its post shall not exceed 0,1 mm.
- 29 -
Figure B.1 – Compliance gauge
- 30 -
Figure B.2 – Location of the posts
Figure B.3 – Detail of the posts
- 31 -
- 32 -
Annex C
(normative)
Electro-static discharge test
C.1 Test procedure
The test procedure shall use the following steps:
1
Acclimate test case at 10 % relative humidity for at least 12 hours before testing.
2
Remove all charge from the test case using ionized air.
3
Mount the case in the fixture shown in Figure C.1.
4
Apply 1,00 kV to the charge plate.
5
10 seconds ± 1 second after applying 1,00 kV, remove the voltage source (charge plate is
floating).
6
Measure the decay time defined as the time required for the charged plate voltage to decay
5 % to 950 V.
Prior to testing a case, ensure there is a non-ionizing environment by performing steps 4 – 6 above
with no case present. Decay time with no case shall be larger than 100 seconds.
C.2 Specification
The decay time shall be smaller than 30 seconds at 10 % relative humidity and 25 °C.
Figure C.1 – Case electro-static discharge test fixture
- 33 -
- 34 -
Annex D
(informative)
Office environment
D.1 Air cleanliness
Due to their construction and mode of operation, Holographic Disk Cartridges have considerable
resistance to the effects of dust particles around and inside the disk drive. Consequently, it is not
generally necessary to take special precautions to maintain a sufficiently low concentration of dust
particles.
Operation in heavy concentrations of dust should be avoided, e.g. in a machine shop or on a
building site.
Office environment implies an environment in which personnel may spend a full working day without
protection and without suffering temporary or permanent discomfort.
- 35 -
- 36 -
Annex E
(informative)
Transportation
E.1 General
As transportation occurs under a wide range of temperature and humidity variations, for different
periods, by many methods of transport and in all parts of the world it is not possible to specify
conditions for transportation or for packaging.
The following gives recommendations.
E.2 Packaging
The form of packaging should be agreed between sender and recipient or, in the absence of such
agreement, is the responsibility of the sender. It should take account of the following hazards.
E.2.1 Temperature and humidity
Insulation and wrapping should be designed to maintain the following conditions during
transportation.
Temperature
5°C to 32°C
Relative Humidity
5% to 80%
Absolute air humidity
25 g/m max.
3
No condensation in or on the case or cartridge.
E.2.2 Impact loads and vibration
Avoid mechanical loads that would distort the shape of the case or cartridge.
Avoid dropping the case or cartridge.
Cases or cartridges should be packed in a rigid box containing adequate shock absorbent
material.
The final box should have a clean interior and a construction that provides sealing to prevent the
ingress of dirt and moisture.
- 37 -
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