1、 Reference number ECMA-123:2009 Ecma International 2009 ECMA-406 1st Edition / December 2013Disk Cassette for 5Disks with 120 mmDiameter Ecma International 2013 COPYRIGHT PROTECTED DOCUMENT i Ecma International 2013 Contents Page 1 Scope 1 2 Conformance . 1 3 Normative references 1 4 Terms and defin
2、itions . 2 5 Conventions and notations 2 5.1 Representation of numbers 2 6 General description of the cassette 2 7 General requirements . 4 7.1 Environments. 4 7.1.1 Test environment. 4 7.1.2 Operating environment . 4 7.1.3 Storage environment. 4 7.1.4 Transportation . 5 7.2 Temperature shock . 5 7.
3、3 Safety requirements 5 7.4 Flammability. 5 8 Dimensional characteristics. 5 8.1 Overall dimensions (Figure 4) 5 8.2 Location hole (Figure 5) 8 8.3 Alignment hole (Figure 5) . 8 8.4 Reference surfaces (Figure 5) 8 8.5 Insertion slot (Figure 6). 9 8.6 Fixing hole (Figure 7) 10 8.7 Gripper slots (Figu
4、re 8). 11 8.8 Positioning hole for guide rail (Figure 9) 13 8.9 Shutter (Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16) 15 8.10 Shutter open/close bay (Figure 17) . 23 8.11 Window for the shutter open/closed sensor (Figure 17, Figure 18, Figure 19). 24 8.12 Shutter lock
5、 mechanism (Figure 20) . 26 8.13 Ring tray (Figure 21) 27 8.14 Feet (Figure 22) 30 8.15 RFID tag (Figure 23) 31 8.16 Label area (Figure 24) . 31 8.17 Shutter center marks (Figure 25, Figure 26) . 32 9 Mechanical characteristics. 35 9.1 Material . 35 9.2 Mass 35 9.3 Edge distortion 35 9.4 Compliance
6、35 9.5 Shutter opening force . 35 9.6 Frictional force of ring tray. 35 9.7 Edge distortion of the ring tray 35 9.8 Disks in the cassette . 35 10 RFID tag 35 10.1 Signal quality . 35 Annex A (normative) Position of the cassette relative to the reference planes . 39 ii Ecma International 2013 Annex B
7、 (informative) Air cleanliness class 100 000 .41 Annex C (normative) Edge distortion test.43 Annex D (normative) Compliance test.45 Annex E (normative) Frictional force of ring tray .47 Annex F (normative) Edge distortion test of the ring tray.49 Annex G (normative) Sensitivity test of RFID tag.51 A
8、nnex H (informative) Office environment53 Annex I (informative) Transportation.55 Annex J (informative) Operation for removing disk from the disk cassette .57 iii Ecma International 2013 Introduction Optical disks have been used widely. And the optical disks have advantage for long-term digital data
9、 preservation usage. However, single-optical-disk based system has weaknesses for the data capacity and transfer rate compared to other devices. To meet the emerging demands for the long-term preservation of digital data, this proposal solves the issues by introducing multiple-disk based system. The
10、 system deals multiple disks as a set and writes/reads the set of disks in parallel. Developing an industry standard is strongly needed for promoting the optical disk in the enterprise usage. The new project for developing two standards, disk cassette the housing has a shutter mechanism 4.2 disk cas
11、sette device consisting of a cassette containing five optical disks 4.3 optical disk disk that accepts and retains information in the form of marks in a recording layer, which can be read with an optical beam 4.4 Radio-frequency identification tag RFID tag element for transmitting information by wir
12、eless communications over a short distance of approximately several centimeters; the cassette ID and the media ID of the cassette are recorded on the RFID tag 4.5 ring tray round saucer that loads an optical disk into the cassette 4.6 shutter mechanism by which the disk is loaded into the cassette a
13、nd by which the disk is removed from the cassette 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
14、and a negative tolerance of -0,02 allows a range of measured values from 1,235 to 1,275. 6 General description of the cassette The cassette is a hard protective housing in a shape that combines a rectangle and a semicircle. The cassette has an upper shell and an under shell, and five disks can be st
15、ored in it. 3 Ecma International 2013 Fig. 6)in t (Fig. 22) Composition of cassette The cassette has an insertion slot, a fixing hole, gripper slots, a positioning hole for a guide rail, a shutter, shutter open/close bay, a shutter lock mechanism, a ring tray, an RFID tag for managing the cassette a
16、nd disks, a label area, feet, and shutter center mark. A disk is inserted such that the recording side faces downward on the ring tray. The five disks, starting from the bottom disk (nearest the under shell), are sequentially named disk 1, disk 2, disk 3, disk 4, and disk 5. When the cassette is put
17、 into the changer system, the shutter is unlocked. The shutter can be opened by engaging a gear with the shutter open/close bay and rotating the gear. Then the disk is removed from the cassette. When the cassette is removed from the changer system, the shutter is locked. Upper shell shell center mar
18、k (Fig. 23) shutter (Fig. 13) gripper slots (Fig. 9) positioning hole for guide rail (Fig. 10) shutter center mark (Fig. 24) Figure 1 Appearance of the cassette with the shutter closed (viewed diagonally from above) label area (Fig. 23) Location hole ( Alignment hole (Fig. 6)RFID tag （Fig. 7） sertio
19、n slot （Fig. 7） Under shell FeeFigure 2 Appearance of the cassette with the shutter closed (viewed diagonally from below) label area(Fig.23) window for the shutter open / closed sensor(Fig.18) fixing hole(Fig.8) shutter open / closed bay(Fig.18) Window(Fig.10) Figure 3 Appearance of the cassette wit
20、h the shutter open (viewed diagonally from above) 4 Ecma International 2013 7 General requirements 7.1 Environments 7.1.1 Test environment The test environment is an environment where the air immediately surrounding the cassette has the following properties: Temperature: 23 C 2 C Relative humidity:
21、45% to 55% Atmospheric pressure: 60 kPa to 106 kPa Air cleanliness: Class 100 000 (see Annex B) No condensation on or in the cassette shall occur. Before testing, the cassette shall be conditioned in this environment for at least 48 h. Unless otherwise stated, all tests and measurements shall be con
22、ducted in this test environment. 7.1.2 Operating environment According to this Ecma Standard, a disk cassette meeting all of the requirements of this Standard in the specified test environment is required to provide data interchange over the specified ranges of environmental parameters in the operat
23、ing environment. A disk cassette consists of the cassette, as specified in this Standard, and the disks contained therein of the same type with 120 mm diameter and almost 1.2 mm thickness. This disk cassette shall meet the requirements of this clause and provides for data interchange. The operating
24、environment is an environment where the air immediately surrounding the disk cassette or cassette has the following properties: Temperature: 5 C to 55 C Relative humidity: 3% to 85 % Absolute humidity: 1 g/m3 to 30 g/m3Atmospheric pressure: 60 kPa to 106 kPa Temperature gradient: 10 C/h max. Relativ
25、e humidity gradient: 10%/h max. Air cleanliness: office environment (see Annex H) No condensation on or in the disk cassette shall occur. If a disk cassette has been exposed to conditions outside those specified in this clause, it shall be acclimatized in an allowed operating environment for at leas
26、t 2 h before use. 7.1.3 Storage environment The storage environment is defined as an environment where the air immediately surrounding the disk cassette has the following properties. Temperature: -10 C to 55 C Relative humidity: 3% to 85 % 5 Ecma International 2013 Absolute humidity: 1 g/m3 to 30 g/
27、m3Atmospheric pressure: 75 kPa to 106 kPa Temperature gradient: 10 C/h max. Relative humidity gradient: 10%/h max. Air cleanliness: Office environment (see also Annex H) No condensation on or in the optical disk cartridge shall occur. 7.1.4 Transportation This standard does not specify requirements
28、for transportation; guidance is given in Annex I. 7.2 Temperature shock The disk cassette shall withstand a temperature shock of up to 20 C when inserted into, or removed from, the drive. 7.3 Safety requirements The disk cassette shall satisfy the safety requirements of Standard ECMA-287, when used
29、in the intended manner or in any foreseeable manner in an information processing system. 7.4 Flammability The cassette shall be made from materials that comply with the flammability class for HB materials, or better, as specified in Standard ECMA-287. 8 Dimensional characteristics The dimensions of
30、the cassette shall be referenced to three orthogonal reference planes: X, Y, and Z. The cassette shall be constrained such that four reference surfaces S1 to S4 on the under shell of the cassette lie in reference plane Z. The intersection of the three planes defines the center of the location hole.
31、The center 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. As explained below, the upper shell of the cassette is defined as the front s
32、urface and the semicircle part is defined as the top of the cassette. For example, the insertion slot is located in the right-hand side of the cassette. 8.1 Overall dimensions (Figure 4) The total length of the cassette shall be L101 = 137,5 mm 0,4 mm. The distance from the top of the cassette to re
33、ference plane X shall be +0,3L102 = 126,8 mm -0,2 mm.The distance from the bottom of the cassette to reference plane X shall be L103 = 10,7 mm 0,2 mm. 6 Ecma International 2013 The distance from the shoulder of the cassette to reference plane X shall be L104 = 80,6 mm 0,2 mm. The total width of the
34、cassette shall be +0,0L105 = 138,0 mm -0,5 mm.The distance from the right-hand side of the cassette to reference plane Y shall be +0,2L106 = 115,0 mm -0,4 mm.The distance from the left-hand side of the cassette to reference plane Y shall be +0,1L107 = 23,0 mm -0,3 mm.The corners of the top shall be
35、rounded with a radius R101 = 65,60 mm 0,15 mm. The center of the round shutter shall be located L108 = 46,0 mm 0,2 mm from reference plane X and L109 = 61,6 mm 0,2 mm from reference plane Y. The total thickness of the cassette shall be L110 = 21,0 mm +0,0-0,2 mm.The total thickness includes the feet
36、 for leveling installed on the bottom surface. The height of each foot shall be 0,3 mm. The two corners of the shoulder of the cassette shall be rounded with a radius R102 = 2,0 mm 0,2 mm R103 = 2,0 mm 0,2 mm. The two corners of the bottom of the cassette shall be rounded with a radius R104 = 7,0 mm
37、 0,2 mm. The long edges of the cassette shall be rounded with a radius R105 = 0,3 mm 0,2 mm. 7 Ecma International 2013 L112L110L104L111L114L108L111L112L102L103(L101)Y ZL109 L115 X A A L113 (L106) L107 L105 Z Z Section A-A (Larger scale) Figure 4 Overall dimensions 8 Ecma International 2013 8.2 Locat
38、ion hole (Figure 5) The center of the location hole shall coincide with the intersection of reference planes X, Y and Z. The diameter of the hole shall be D101 = 4,00 mm +0,05-0,00 mmand its depth shall be L111 = 1,2 mm min. The room below the location hole shall be free up to L112 = 5,0 mm min. bel
39、ow reference plane Z. The diameter of the free room shall be equal to at least D101. The lead-in edges shall be rounded with a radius R106 = 0,5 mm 0,1 mm. 8.3 Alignment hole (Figure 5) The center of the alignment hole shall lie on the intersection of reference planes X and Z at a distance L113 = 92
40、,0 mm 0,2 mm from reference plane Y. The alignment hole shall have a substantially rectangular shape. Its dimensions shall be +0,05L114 = 4,00 mm -0,00 mmL115 = 5,6 mm +0,2-0,0 mmand its depth shall be equal to L111. The room below the alignment hole shall be free up to at least L111. The dimensions
41、 of the free room shall be at least L114 and L115. The lead-in edges shall be rounded with a radius R106. 8.4 Reference surfaces (Figure 5) There shall be four reference surfaces S1, S2, S3, and S4 on the under shell of the cassette Surfaces S1 and S2 shall be circular with a diameter D102 = 7,0 mm
42、min. Surface S1 shall be centered on the location hole, and surface S2 shall be centered on the alignment hole. Surface S3 shall be rectangular with dimensions 9 Ecma International 2013 L112L111L114L117L116L111L112L116 = 79,0 mm max. L117 = 92,0 mm max. from reference plane Y and L118 = 1,0 mm max.
43、L119 = 11,0 mm max. from reference plane X, except in the areas of the detents. Surface S4 shall be in a symmetrical position with respect to the central axis cassette, and shall be located L120 = 93,0 mm max. L121 = 103,0 mm max. from reference plane Y. Y L121 L119 L120 L118 L115 X L113 Z Section A
44、-A (Larger scale) Figure 5 Location hole, Alignment hole , Reference surface 8.5 Insertion slot (Figure 6) The cassette shall have an insertion slot in the plane of the right side 10 Ecma International 2013 L122The bottom of the slot shall be at a distance L122 = 61,6 mm 0,3 mm from reference plane
45、X. The depth measured from the edge of the cassette shall be L123 = 2,5 mm 0,2 mm. The side of the insertion slot parallel to reference plane Z shall be a distance L124 = 13,6 mm 0,2 mm from reference plane Z. The width of the insertion slots shall be L125 = 4,8 mm 0,1 mm. The corner of the insertio
46、n slot shall be rounded with a radius R107 = 0,5 mm 0,1 mm. Z Y L125 L124 L123 X XFigure 6 Insertion slot 8.6 Fixing hole (Figure 7) The cassette shall have a fixing hole on the left side. The edge of the fixing hole shall be at a distance L126 = 36,6 mm 0,25 mm 11 Ecma International 2013 L127L126L1
47、27 = 42,6 mm 0,25 mm from reference plane X. The depth measured from the edge of the cassette shall be L128 = 1,2 mm 0,1 mm. The side of the fixing hole parallel to reference plane Z shall be at a distance L129 = 2,1 mm 0,1 mm. The width of the fixing hole shall be L130 = 6,1 mm 0,1 mm. The corner o
48、f the fixing hole shall be rounded with a radius R108 = 0,5 mm 0,1 mm. Z Y L130 L128 L129X XFigure 7 Fixing hole 8.7 Gripper slots (Figure 8) The cassette shall have two asymmetrical gripper slots. The slots shall be through upper shell and under shell. Each slot shall have a depth of +0,3L131 = 3,0
49、 mm -0,0 mm+0,3L132 = 3,0 mm -0,0 mmfrom the edge of the cassette and shall have width of 12 Ecma International 2013 L136L134L133L135L133 = 6,0 mm 0,2 mm L134 = 6,0 mm 0,2 mm. The lower edge of the left slot shall be at L135 = 2,6 mm 0,1 mm from reference plane X. The lower edge of the right slot shall be at L136 = 6,3 mm 0,1 mm from reference plane X. The corners of the slot shall be rounded with a radius R109 = 0,2 mm 0,2 mm R110 = 0,2 mm 0,2 mm R111 = 0,8 mm 0,2 mm R1
