1、INTERNATIONAL STANDARD ISOJIEC 12246 First edition 1993-12-15 Information technology - 8 mm wide magnetic tape cartridge dual azimuth format for information interchange - Helical scan recording Technologies de /information - Cartouche de bande magn however, such exposure may cause permanent damage.
2、5.1 Testing environment Unless otherwise specified, tests and measurements made on the cartridge to check the requirements of this International Standard shall be carried out under the following conditions temperature: 23”C*2”C relative humidity: 40 % to 60 % conditioning period before testing: 24 h
3、 5.2 Operating environment Cartridges used for data interchange shall be capable of operating under the following conditions temperature: 5”Cto45”C relative humidity: 20 % to 80 % wet bulb temperature: 26 “C max. There shall be no deposit of moisture on or in the cartridge. Conditioning before opera
4、ting: If a cartridge has been exposed during storage and/or transportation to a condition outside the above values, the cartridge shall be conditioned before use 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 ma
5、ximum of 24 h. NOTE -Rapid variations of temperature should be avoided. 5.3 Storage environment For long-term or archival storage of cartridges the following conditions shall be observed temperature: 5 “C to 32 “C relative humidity: 20 % to 60 % wet bulb temperature: 26 “C max. The stray magnetic fi
6、eld at any point on the tape shall not exceed 4 000 A/m. There shall be no deposit of moisture on or in the cartridge. 5.4 Transportation Recommended limits for the environment to which a cartridge may be subjected during transportation, and the precautions to be taken to minimize the possibility of
7、 damage, are provided in annex D. 5.5 Safety The cartridge and its components shall satisfy the requirements of IEC 950. 5.6 Flammability The tape and the case components shall be made from materials which, if ignited from a match flame, do not continue to burn in a still carbon dioxide atmosphere.
8、ISO/IEC 12246:1993 (E) Section 2 - Cartridge 6 Dimensional and mechanical characteristics of the cartridge 6.1 General The case of the cartridge shall consist of - an upper half, - a lower half, - a lid pivotally mounted on the upper half. In the drawings, an embodiment of the cartridge is shown as
9、an example. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 is a perspective view of the cartridge seen from the top. is a perspective view of the cartridge seen from
10、the bottom. shows the top side with the lid closed using third angle projection. shows the bottom side, datum and support areas. shows the bottom side with the lid removed. shows the enlarged view of the datum and recognition holes. shows the cross-sections through the light path holes, the recognit
11、ion holes and the write-inhibit hole. shows details of the lid when closed, rotating and open. shows the details of the lid release insertion channel. shows the lid lock release requirements. shows the reel lock release requirements. shows the reel unlock force direction. shows the lid release force
12、 direction. shows the lid opening force direction. shows the light path and light window. shows the internal tape path and light path. shows the cartridge reel and a cross-section view of the cartridge reel. shows the cross-section view of the cartridge reel interface with the drive spindle. shows t
13、he tape access cavity clearance requirements. The dimensions are referred to three orthogonal Reference Planes X, Y and Z. 6.2 Overall dimensions See figure 3. The overall dimensions of the case with the lid in the closed position shall be 1, = 62.5 mm f 0.3 mm 1, = 95.0 mm f 0,2 mm 1, = 15.0 mm f 0
14、.2 mm The distance from the near side to plane X shall be 1, = 47.35 mm f 0.15 mm The distance from the right side to plane Y shall be 1, = 13.0 mm f 0,l mm 6.3 Holding areas The holding areas shown hatched in figure 3 shall be the areas along which the cartridge shall be held down when inserted in
15、the drive. Their position and dimensions shall be 4 ISO/IEC 122461993 (E) 1, = 12.0 mm max. 1, = 3.0 mm min. 6.4 Cartridge insertion The cartridge shah have asymmetrical features to prevent insertion in the drive in other than the correct orientation. These consist of a channel, a recess and an incl
16、ine. The channel (figures 3 and 9) shall provide for an unobstructed path, when the lid is closed and locked, to unlock the lid and the dimensions shall be 1, = 79.7 mm f 0,2 mm I,= l,OmmfO,l mm I, = 0,7 mm f 0.1 mm l, = 1.0 mm min. I, = 12 mm f 0.1 mm I, = 0.8 mm f 0,l mm 1 14= 13mm*00,1 mm 1 IS=Oj
17、mmfO,lmm I, = 15 mm f 0,l mm I, = 1.0 mm f 0,l mm I, = 3,8 mm f 0,l mm I, = 02 mm f 0.2 mm 1, = 2.3 mm min. I, = 25 mm f 0.2 mm The recess dimensions (figures 3 and 5) shah be I, = 7,5 mm max. I, = 11,O mm f 0.2 mm 1 24=1mmf0,1mm 125=1mmf0,1mm The incline (figure 8) is part of the lid structure and
18、the dimensions shah be A, = 17,Yf4,0 6.5 Window See figure 1. A window may be provided on the top side so that a part of the reels is visible. The window, if provided, shall not extend beyond the height of the cartridge. 6.6 Loading grips See figure 3. ISO/lEC 12246: 1993 (E) The cartridge shall hav
19、e loading grips for automatic loading into a drive. The dimensions and positions of the loading grips shall be 1 28 = 39.35 mm f 0.20 mm I, = 15 mm f 0.1 mm I, = 5.0 mm f 0.3 mm I, = 2.0 mm f 0.2 mm A, =90”*5” 6.7 Label areas See figure 3. A portion of the rear side of the cartridge and a portion of
20、 the top side of the cartridge may be used for labels. The rear side area provides for readability of the label when it is stacked or inserted in the drive. The position and the size of the labels shall not interfere with the operation or clearance requirements of the cartridge component parts. The
21、area used for labels on the top side shall not extend beyond the inner edge of the holding areas defined by I, and 1,. The position and dimensions of the back side label area shall be 1 32 = 0.5 mm min. I, = 1,5 mm min. 1 34 = 80,O mm max. The depth of the label depression shall be 0,3 mm max. 6.8 D
22、atum areas and datum boles See figures 4.5 and 6. The annular datum areas A, B and C shall lie in plane Z. They determine the vertical position of the cartridge in the drive. Each shall have a diameter d, equal to 6.0 mm f 0.1 mm and be concentric with the respective datum hole. The centres of datum
23、 holes A and B lie in plane X. The centre of the circular datum hole A shall be at the intersection of planes X and Y (see figure 5). The distance from the centre of datum hole B to plane Y (see figure 4) shall be I, = 68.0 mm f 0,l mm The distance from the centre of the circular datum hole C to pla
24、ne Y (see figure 6) shall be I, = 1020 mm f 0.05 mm The distance from the centre of datum hole D to plane Y (see figure 6) shall be I, = 79,2 mm f 0,l mm The distance from the centres of datum holes C and D to plane X (see figure 5) shall be l, = 36.35 mm f 0,08 mm + 0.05 The diameter of datum hole
25、A and datum hole C shall be 3.00 mm_ , o. IIIIII. The dimensions of datum hole A and datum hole C shall be I, = 1.2 rnrn - ISO/IEC 122461993 (E) I, = 2.6 mm min. l, = 1.5 mm min. 142 = 4.0 mm min. l, = 0,3 mm max. A,=45”f 1” The dimensions of datum hole B and datum hole D shall be I, = 1,2 mm+erf mn
26、 1, = 2.6 mm min. l, = 1,5 mm min. 142 = 4,0 mm min. I, = 0.3 mm max. l, = 3,00 m?;o”,“rrm I, = 3.5 mm f 0,l mm l, = 3,00 mm f 0.05 mm A,=45”i 1” rl = 1.7 mm min. 6.9 Support areas The cartridge support areas are shown shaded in figure 4. Support areas A, B and C shall be coplanar with datum areas A
27、, B and C, respectively, within f 0,l mm. Support area D shah be coplanar with datum plane Z within f 0,15 mm. The areas within 149 of the edge of the cartridge shah be recessed from the support areas. The dimensions and positions of the support areas shah be I, = 68.0 mm f 0.1 mm I, = 10.0 mm f 0.1
28、 mm I, = 11.0 mm f 0.1 mm I, = 0.5 mm f 0,l mm I, = 7,0 mm f 0,l mm I, = 30,O mm f 0,l mm l, = 55 mm f 0.1 mm I, = 64.5 mm f 0,2 mm 6.10 Recognition boles See figures 5.6 and 7. There shall be 5 recognition holes numbered 1 to 5 as shown in figure 6. Their positions shall be defined by I, = 43.35 mm
29、 f 0.15 mm I, = 3,7 mm f 0.1 mm 7 ISO/IEC 12246:1993 (E) I, = 2.3 mm f 0.1 mm 15, = 6.4 mm f 0.1 mm I, = 3.7 mm f 0.1 mm I, = 2.3 mm f 0.1 mm I, = 6.4 mm f 0.1 mm I, = 79.0 mm f 0,2 mm All recognition holes shall have the cross-section F-F shown in figure 7 and shall have a diameter of 3,0 mm f 0,l
30、mm. I, = 1,2 mm: - I, = 5.0 mm min. One of the cross-sections shows a recognition hole closed by a plug, the other shows the plug punched out. These plugs shall withstand an applied force of 0,5 N max. without being punched out. This International Standard prescribes the following states of these ho
31、les. - Recognition hole 1 shall be close - Recognition hole 2 shall be closed for tape of 13 pm nominal thickness. - Recognition hole 2 shall be open for tape of 10 pm nominal thickness. - Recognition holes 3,4 and 5 shall be closed. 6.11 Write-inhibit bole See figures 6 and 7. The position and dime
32、nsion of the write-inhibit hole shall be defined by l, = 3.7 mm f 0,l mm I, = 5.0 mm min. 1 64 = 10.0 mm f 0.1 mm The diameter of the hole shall be 3.0 mm f 0,l mm. When the write-inhibit hole is open, recording on the tape is inhibited. When it is closed, recording is enabled. The case may have a m
33、ovable element allowing the write-inhibit hole to be opened or closed. If present, this element shall be such that the state of the write-inhibit hole shall be visible (see figure 3 as an example). The write-inhibit hole closure shall be constructed to withstand a force of 0.5 N. The force required
34、to open or close the write-inhibit hole shall be between 1 N and 15 N. 6.12 Pre-positioning surfaces See figures 3 and 5. These surfaces determine the position of the cartridge in the Y direction when inserted into the drive loading slot. The dimensions of the pre-positioning surfaces shall be I, =
35、15 mm f 0.1 mm I, = 2.4 rnrn:,“;O mm lSO/lEC 12246: 1993 Q 1 66 = 2,4 mm;0 mn 1 67 = 1,0 mm f 0.1 mm l, = 69,0 mm f 0.2 mm I, = 14.65 mm f 0.10 mm lTo = 13,15 mm f 0.10 mm A, =45” f 1” 6.13 Cartridge lid See figures 3 and 8. The cartridge shall include a lid for protection of the tape during handlin
36、g, storage and transportation. The lid consists of two parts, the main part and an auxiliary part. The main part rotates around axis A (see figure 8) which is futed relative to the case. The location of axis A shall be defined by 4, and I, = 75 mm f 0,l mm The auxiliary part rotates around axis B wh
37、ich is fixed relative to the main part of the lid and moves with it. When the lid is in the closed position, the location of axis B shall be defined by I, = 7.0 mm f 0,l mm I, = 10,l mm f 0,l mm The rotation of the auxiliary part is controlled, by a cam at each end, to give the path indicated in fig
38、ure 8. When the lid is completely open, neither part shall extend above a plane located l, above and parallel to plane 2. I, = 14.8 mm min. I, = 11.5 mm f 0.2 mm I, = 12 mm f 0.1 mm I, = 22.3 mm max. A, = 85” f 2” When the lid is in a partially open position, neither part shall extend above a plane
39、located I, above and parallel to plane Z. I, = 22.5 mm max. r2 = 14.9 mm max. The main part is shown in figures 3 and 8. I, = 75 mm f 0,l mm I, = 8,4 mm max. I, = 15.2 mm“- l, = 15.3 mrnloO;D- l, = 13.15 mm f 0,lO mm 3 = 14.7 mmo- ISO/IEC 122469993 (E) The design of the locking mechanism is not spec
40、ified by this International Standard except that it shall be operated by a release pin in the drive. In the lid closed and locked position, access to the lid lock release shall be unobstructed in the hatched area (see figure 10) defined by I, = 2.0 mm f 0,l mm I, = 6.3 mm f 0.2 mm lgs=12mmf0,1mm A,
41、=45”f 1” AI = 150f lo The lid release mechanism shall be actuated when the drive release pin is in the shaded area (see figure 10) defined by I, = 2,0 mm f 0,l mm I, = 8.2 mm f 0,2 mm 1 *, = 0.7 mm f 0.2 mm A8 = 15” f 1” The force needed to unlock the lid lock shall not exceed 025 N in the direction
42、 shown in figure 13. The force needed to open the lid shall not exceed 1 ,O N in the direction shown in figure 14. 6.14 Cartridge reel lock see figure 11. The reels shall be locked when the cartridge is removed from the tape drive. The design of the locking mechanism is not specified by this Interna
43、tional Standard except that it shall be operated by a release pin in the drive. The release mechanism shall be accessed through a hole in the case (see figure 5) defined by I, = 34.5 mm f 0.1 mm 18, = 35.85 mm f 0.15 mm 1, = 4,0 mm f 0.1 mm I, = 6.5 mm min. The reels shall be unlocked when the opera
44、ting face of the release pin is located I, from plane X. In this position there shall be a clearance of 1, between the locking mechanism and the inside of the rear wall of the cartridge. The dimensions of the release mechanism (see figure 11) shall be I, = 3.2 mm yo”;- l, = 4,0 mm f 0.1 mm I, = 39.0
45、 mm:- I, = 4 1.75 rn+y$m . I, = 0.5 mm min. 1 97 = 7.8 mm max. lg8 = 4.0 mm f 0.1 mm A, = 60.0” f 1.0 10 BO/IEC 122461993 (E) r4 = 0.3 mm max. The force needed to unlock the reel lock in the direction shown in figure 12 shall not exceed 1.0 N. 6.15 Reel access boles See figure 5. The case shall have
46、 two circular reel access holes which shall allow penetration of the drive spindles, The dimension and positions of the access holes shall be I, = 23.00 mm f 0.05 mm I, = 11,40 mm f 0.05 mm lIol = 46.2 mm f 0,l mm d2 = 18.80 mm f 0,05 mm 6.16 Interface between the reels and the drive spindles See fi
47、gures 17 and 18. The drive spindles shall engage the reels in the area defined by I, = 5,4 mm f 0,l mm 1 1o3 = 4,4 mm f 0.1 mm l, = 0,6 mm max. lIo5 = 2,4 mm f 0,l mm l, = 0.2 mm max. I, = 2,4 mm f 0.2 mm A, = 45 f 1” A, = 15”f I” A,=609 lo r5 = 0.2 mm max. d3 = 6.50 rnrnr:u” - . I, = 66.8 mm min. 1
48、 136 = lo.0 mm min. A, = 49” max. 13 IsO/IEC 12246:1993 (E) /- Takeup Reel r Supply Reel Tape Reference Edge -/ Recording Surface of the Magnetic Tape Figure 1 - Tape cartridge assembly top view (lid open) Figure 2 - Tape cartridge assembly bottom view (lid closed) 14 ISO/IEC 12246: 1993 Q Loading G
49、rip 28 Incorrect insertion Chonnel -Y- P I 65 Protection I Incline -L 6 Label Area I I A I I .- 1 -Write-Inhibit InA;rn+rrr SECTION A-A SECTION B-B Figure 3 - Top side (lid closed) 15 lSO/IEC 12246: 1993 (E) -Y- P /-= - Datum Area A- ,i,_ r Datum Hole A L 48 47 i-l Dotum Hole C Datum Area C I 1 1 I - ( + ) Support Area C-/ for Measurement / Datum Hc lpport Area D D Figure 4 - Bottom side, datum and support areas 16 ISO/IEC 12246:1993 (E) Pre-positioning r Surf
