ISO/IEC 11319:1993

INTERNATIONAL
ISO/IEC
STANDARD
First edition
1993-07-15
Information technology - 8 mm wide
magnetic tape cartridge for information
interchange - Helical scan recording
Technologies de I’informa tion
- Cartouche pour bande magnetique de
8 mm de large pour Mchange d’information - Enregistrement par
bala yage h&licoidal
Reference number
lSO/IEC 11319:1993(E)
Contents
Page
Section 1 : General
1 Scope
2 Conformance
3 Normative references
4 Definitions 1
4.1 AC erase
Average Signal Amplitude 1
4.2
4.3 azimuth
4.4 back surface
4.5 bit cell
byte 1
4.6
4.7 cartridge
4.8 Cyclic Redundancy Check (CRC) Character
4.9 Error Correcting Code (ECC)
4.10 flux transition position
4.11 flux transition spacing
4.12 2
magnetic tape
4.13 Master Standard Reference Tape
4.14 Physical Beginning of Tape (PBOT)
4.15 Physical End of T;lpe (PEOT)
4.16 physical recordinrr, density
4.17 Secondary Refer&we Amplitude
4.18 Secondary Reference Field
4.19 Secondary Standard Reference Tape
4.20 Standard Reference Current (II-)
4.21 Tape Reference Edge
4.22 Test Recording &rent
4.23
track
4.24
Typical Field
4.25
0 ISO/IEC 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronic or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
I SO/I EC Copyright Off ice l Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ISOlIEC 11319:1993(E)
Environment and safety
5.1 Testing environment
5.2 Operating environment
Storage environment
5.3
Transportation
5.4
5.5 Safety
5.6 Flammability
case 3
Section 2 : Requirements for the
Dimensional and mechanical characteristics of the case
. General
. Over211 dimension ( figure 3 )
Holding areas
63 .
l Cartridge insertion
65 . Window ( figure 1 )
. Loading grips ( figure 3 )
. Label areas ( figure 3 )
Datum areas and datum holes ( figures 4, 5 and 6 )
6:9 Support areas
6.10 Recognition holes ( figures 5, 6 and 7 )
Write-inhibit Hole ( figures 6 and 7 ) 8
6.11
Pre-positioning surfaces ( figures 3 and 5 )
6.12
Cartridge lid ( figures 3 and 8 )
6.13
Cartridge reel lock ( figure 11 )
6.14
Reel access holes ( figure 5 )
6.15
Interface between the reels and the drive spindles ( figures 17 and 18 )
6.16
Light path ( figures 5, 7, 15 and 16 )
6.17
6.18 Position of the tape in the case ( figure 16 )
6.19 Tape path zone ( figures 16 and 17 )
6.20 Tape access cavity ( figure 5 )
6.21 Tape access cavity clearance requirements ( figure 19 )
Section 3 : Requirements for the unrecorded tape l
Mechanical, physical and dimensional characteristics of the tape
7.1 Materials
7.2 Tape length
7.2.1 Length of magnetic tape
7.2.2 Length of leader and trailer tapes
7.2.3 Splicing tape
Width
7.3
Discontinuities
7.4
7.5 Thickness
7.5.1 Thickness of magnetic tape
7.5.2 Thickness of leader and trailer tape
. . .
7.6 Longitudinal curvature
7.7 Cupping
20 )
7.8 Coating adhesion ( figure
;Id hesion
7.9 Layer-lo- irwx
7.10 Tensik strketh
L.
7.10.1 Breaking strencth
7X1.2 Yield stl-ength
L
Residual elong:k~n
7.11
Electric3 1 resistance of the surf;\ce
7.12
Tape winding
7.13
Light transmcittance of tape
7.14
Magnetic recording performance
8.1 Test conditions
8.2 Typicat Field
8.3 Signal Amplitude
Resolution
8.4
Narrow-band signal-to-noise ratio
8.5
8.5.1 Requirement
8.52 Proced u re
Ease of erasure
8:7 Tape quality
8.7.1 Missing pulses
8.7.2 Missing pulse zone
Inhibitor tape
8.8
Section 4 : Requirements for an interchanged tape
Format
9.1 Gener3 1
9.2 Information matrix
9.2.1 Loading of the information matrix
Method of recording
Physical recording density
10.1
10.1.1 Long-term average bit cell length
10.1.2 Short-term average bit cell length
10.1.3 Rate of change
Bit shift
10.2
Read sign:;1 amplitudes
10.3
iv
10.3.1 Amplitude of data signals 41
10.3.2 Amplitude of servo signals
10.3.3 Signal amplitude on an analogue tape mark track
10.4 Erasu i-e
Track geometry 42
1 l*l Track positions
11.2.1 Average track pitch
11.2.2 Adjacent track pitch
11.3 Track width
11.4 Track angle
11.5 Linearity of track edges
11.6 Azimuth
12 Format of an information track
12.1 Channel bit
12.2 Information Segment
12.2.1 Bit Synchronization field
12.2.2 Information Segment Number
12.2.3 Information Segment field
Information Block
12.3
12.4 Information Zone
Servo Zone
12.5
Information Tracks
12.6
12.6.1 Format ID Track
12.6.2 Data Track
12.6.3 Tape Mark Track
12.6.4 Splice Track
13 Tape Mark
13.1 Description
13.2 Long Tape Mark
Short Tape Mark
13.3
13.3.1 Normal Short Tape Mark
13.3.2 Alternative Short Tape Mark
14 ID Information
14.1 Column 00, Row 00
14.1.1 Block Type - Data Block
14.1.2 Block Type - Data Block
14.1.3 Block type - Format ID
14.1.4 Block type - Pad Block
14.2 Column 00, Row 01
14.3 Column 00, Row 02 49
14.4 Column 00, Row 03 49
14.5 Column 00, Row 04 50
14.6 Column 00, Rows 05, 06 50
14.6.1 Row 05
14.6.2 Row 06
14.7 Column 00. Row 07
14.8 Column 00, Rows 08, 09, 10
14.8.1 Block type 5 Data Block
14.8.2 Block type - non-Data Block
14.9 Column 00, 50
Rows 11, 12, 13
15 Rewritten Information Blocks
16 Physical tape format
Initial Erased Area 51
16.1
16.2 Logical Beginning of Tape Area (LBOT Area)
16.3 Usable area of the tape
16.4 Post Data erased area
Annexes
Measurement of light transmittance of tape and leaders 53
A
B Measurement of bit shift
C Representation of &hit bytes by IO-bit patterns
D Recommendations for transportation
Inhibitor tape 63
E
vi
ISOlIEC 11319:1993(E)
Foreword
IS0 (the International Organization for Standardization) and IEC (the lnter-
national Electrotechnical Commission) form the specialized system for
worldwide standardization. National bodies that are members of IS0 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. IS0 and IEC technical com-
mittees collaborate in fields of mutual interest. Other international organ-
izations, governmental and non-governmental, in liaison with IS0 and IEC,
also take part in the work.
In the field of information technology, IS0 and IEC have established a joint
technical committee, lSO/IEC JTC 1. Draft International Standards adopted
by the joint technical committee are circulated to national bodies for vot-
ing. Publication as an International Standard requires approval by at least
75 % of the national bodies casting a vote.
International Standard lSO/IEC 11319 was prepared by the European
Computer Manufacturers Association (as Standard ECMA-145) and was
adopted, under a special “fast-track procedure”, by Joint Technical Com-
mittee lSO/IEC JTC 1, Information technology, Sub-Committee 11, Flex
ible magnetic media for digital data interchange, in parallel with its approva
by national bodies of IS0 and IEC.
Annexes A, B and C form an integral part of this International Standard
Annexes D and E are for information only.

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INTERNATIONAL STANDARD ISO/IEC 11319:1993 (E)
Information technology - 8 mm wide magnetic tape cartridge for information
Helical scan recording
interchange -
Section 1 : General
1 scope
This International Standard specifies the physical and magnetic characteristics of an 8 mm wide magnetic tape
cartridge to enable interchangeability of such cartridges. It also provides a format and recording method, thus
allowing, together with IS0 1001 for Magnetic Tape Labeliing, full data interchange by means of such magnetic
tape cartridges.
2 Conformance
A magnetic tape cartridge shall be in conformance with this International Standard if it satisfies all mandatory
requirements specified herein. The tape requirements shall be satisfied throughout the extent of the tape.
3 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this
International Standard. At the time of publication, the editions indicated were valid. Ail standards are subject to
revision, and parties to agreements based on this International Standard are encouraged to investigate the
possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0
maintain registers of currently valid International Standards.
ISO/R 527: 1966, Plastics - Determination of tensile properties.
IS0 1001: 1986, Information processing - File structure and labelling of magnetic tapes for ‘information interchange.
IS0 1302: 1978, Technical drawings - Method of indicating surface texture on drawings.
IEC 950: 1990, Safety of information Technology Equipment, including Electrical Business Equipment.
4 Definitions
For the purpose of this International Standard, the following definitions apply.
4.1 AC erase: A process of erasure utilizing alternating fields of decaying level.
4.2 Average Signal Amplitude: The average peak-to-peak value of the signal output of the read head measured
over a minimum of 1,40 mm, exclusive of missing pulses.
4.3 azimuth: The angular deviation, in degrees of arc, of the recorded flux transitions on a track from the line
normal to the track centreline.
4.4 back surface: The surface of the tape opposite to the magnetic coating used to record data.
4.5 bit cell: A distance along the track allocated for the recording of a Channel bit.
4.6 byte: An ordered set of bits acted upon as a unit.
4.7 cartridge: A case containing magnetic tape stored on twin reels.
4.8 Cyclic Redundancy Check (CRC) Character: A character used for error detection.

ISOlIEC 11319:1993(E)
4.9 Error Correcting Code (WC): A mathematical procedure yielding bytes for the detection and
correction of errors.
point which exhibits the maximum free-space flux density normal to the tape
4.10 flux transition position: That
surface.
4.11 flux transition spacing: The distance along a track between successive flux transitions.
4.12 accepts and retains magnetic signals intended for input, output, and storage of
magnetic tape: A tape that
for information
data processing.
A tape selected as the standard for amplitude, Typical Field and
4.13 Master Standard Reference Tape:
Resolution.
NOTE I The hlaster Standard Reference Tape has been established by the SONY Corporation.
4.14 Physical Beginning of Tape (PBOT): The transition from the tape leader to the opaque area of the splice by
which the translucent leader tape is joined to the magnetic tape.
4.15 Physical End of Tape (PEOT): The transition from the opaque area of the splice to the translucent trailer
tape.
recorded flux transitions per unit length of track, expressed in
4.16 physical recording density: The number of
flux transitions per millimetre (ftpmm).
4.17 Secondary Reference Amplitude: The Average Signal Amplitude from the Secondary Standard Reference
Tape when it is recorded with the Test Recording Current at 2126 ftpmm.
4.18 Secondary Reference Field: The Typical Field of the Secondary Standard Reference Tape.
4.19 Secondary Standard Reference Tape: A tape the performance of which is known and stated in relation to
that of the Master Standard Reference Tape.
NOTE 2 Secondary Standard Reference Tapes can be ordered under the Part Number RSE-5001, until the year 2001, from the
Magnetic Product Group, Data Media Sales Division, h-7-35 Kitashinagawa, Shinagawa-ku, TOKYO 131,
Sony Corporation,
Japan.
it is intended that these be used for calibrating tertiary reference tapes for use in routine calibration.
4.20 Standard Reference Current (Ir): The current that produces the Secondary Reference Field.
4.21 Tape Reference Edge: The lower edge of the tape when the magnetic coating is facing the observer and the
supply reel is to the observer’s right.
4.22 Test Recording Current: The current that is 1,5 times the Standard Reference Current.
4.23 tone: A signal recorded at 98 ftpmm.
4.24 track: A diagonally positioned area on the tape along which a series of magnetic transitions may be
recorded.
4.25 Typical Field: In the plot of the Average Signal Amplitude against the recording field at the physical
recording density of 2 126 ftpmm, the minimum field that causes an Average Signal Amplitude equal to 90% of
the maximum Average Signal Amplitude.
5 Environment and safety
The conditions specified below refer to ambient conditions immediately surrounding the cartridge. Cartridges
exposed to environments outside these limits may still be able to function usefully; however, such exposure may
cause permanent damage.
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 OC k 2 OC
relative Humidity: 40 % to 60 %
conditioning period before testing: 24 h
5.2 Operating environment
used for data interchange shall be capable of operating under the following conditions
Cartridges
temperature: 5 OC to 45 OC
relative Humidity: 20 % to 80 %
wet Bulb Temperature: 26 OC max.
There shall be no deposit of moisture on or in the cartridge.
Conditioning before operating:
If a cartridge has been exposed during storage and/or transportation to a condition outside the above values,
before use the cartridge shall be conditioned 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.
NOTE 3 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 OC max.
The stray magnetic field 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.
5.1 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 damage, are provided in annex D.
5.5 Safety
The cartridge and its components shall satisfy the requirements of IEC 950.
5.6 Flammability
materials which, if ignited from a match flame, do not
The cartridge and its components shall be made from
continue to burn in a still carbon dioxide atmosphere.
Section 2 : Requirements for the case
6 Dimensional and mechanical characteristics of the case
6.1 General
shall consist of
The case of the cartridge
- an upper half,
- a lower half,
- a lid pivotally mounted on the upper half.

ISOlIEC 11319:1993(E)
In the drawings, an embodiment of the cartridge is shown as an example.
Figure 1 is a perspective view of the cartridge seen from the top.
Figure 2 is a perspective view of the cartridge seen from the bottom.
Figure 3 shows the top side with the lid closed using third angle projection.
Figure 4 shows the bottom side, datum and support areas.
Figure 5 shows the bottom side with the lid removed.
shows the enlarged view of the datum and recognition holes.
Figure 6
shows the cross-sections through the light path holes, the recognition holes and the write-
Figure 7
inhibit hole.
Figure 8 s-hows details of the lid when closed, rotating and open.
Figure 9 shows the details of the lid release insertion channel.
Figure IO shows the lid lock release requirements.
Figure 11 shows the reel lock release requirements.
Figure 12 shows the reel unlock force direction.
shows the lid release force direction.
Figure 13
shows the lid opening force direction.
Figure 14
Figure 15 shows the light path and light window.
Figure 16 shows the internal tape path and light path.
Figure 17 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.
Figure 18
shows the tape access cavity clearance requirements.
Figure 19
The dimensions are referred to three orthogonal Reference Planes X, Y and 2.
6.2 Overall dimension ( figure 3 )
The overall dimensions of the case with the lid in the closed position shall be
= 62,5 mm & 0,3 mm
Ll
= 95,0 mm f: 0,2 mm
L2
= 15,O mm t 0,2 mm
L3
The distance from the rear side to plane X shall be
= 47,35 mm * 0,15 mm
L4
The distance from the right side to plane Y shall be
= 13,0 mm +, 0,l mm
Ls
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 the drive. Their position and dimensions shall be
= 12,0 mm max.
L6
= 3,0 mm min.
L7
ISO/IE@ 11319:1993(E)
6.4 Cartridge insertion
The cartridge shall have asymmetrical features to prevent insertion in the drive in other than the correct
orientation. These consist of a channel, a recess and an incline.
The channel ( figures 3 and 9 ) shall provide for an unobstructed path, when the lid is closed and locked, to
unlock the lid. The dimensions shall be
= 79,7 mm & 0,2 mm
L8
= 1,O mm * 0,l mm
L9
= 0,7 mm 2 0,l mm
= 1,O mm min.
1,2 mm 2 0,l mm
Ll2 =
= 0,8 mm k 0,l mm
Lli a
= 1,2 mm IL 0,l mm
L14
= 0,5 mm * 0,l mm
L15
= 1,5 mm +, 0,l mm
L16
= 1,0 mm t OJ mm
L17
= 3,8 mm 2 0,l mm
L18
L19 = 0,2 mm 2 0,2 mm
= 2,3 mm min.
L20
L21 = 2,5 mm 2 0,2 mm
The recess dimensions ( figures 3 and 5 ) shall be
= 7,5 mm max.
L22
= 11,O mm 2 0,2 mm
L23
= 1,5 mm * 0,l mm
L24
= 1,5 mm t 0,l mm
L25
The incline ( figure 8 ) is part of the lid structure and the dimensions shall be
+ 0,o
= 7,7 mm mm
L26
- 2,5
+ 0,05
= 0,55 mm mm
L27
- 0,lO
= 17,5O k 4,0°
Al
6.5 Window ( figure 1 )
A window may be provided on the top side so that a part of the reel is visible. The window, if provided, shall not
extend beyond the height of the cartridge.

6.6 Loading grips ( figure 3 )
The cartridge shall have loading grips for automatic loading into a drive.
The dimensions and positions of the loading grips shall be
= 39,35 mm & 0,20 mm
L28
= 1,5 mm * 0,l mm
=29
= 5,O mm & 0,3 mm
L30
=31 = 2,0 mm t 0,2 mm
= 9o” t 5”
A2
6.7 Label areas ( figure 3 )
A portion of the rear side of the cartridge and a portion of 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 into 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 area used for labels on the top side shall not extend beyond the inner edge of the holding areas defined
bY
L6 and L7.
The position and dimensions of the rear side label area shall be
= 0,5 mm min.
L32 h
= 1,5 mm min.
L33 -
80,O mm max.
L34 =
a
The depth of the label depression shall be 0,3 mm max.
6.8 Datum areas and datum holes ( figures 4,5 and 6 )
The annular datum areas A, B and C shall lie in plane 2. They determine the vertical position of the cartridge in
the drive. Each shall have a diameter D1 equal to 6,0 mm & 0,l mm and be concentric with the respective datum
hole.
The centres of datum 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
= 68,0 mm jt 0,l mm
L35
The distance from the centre of the circular datum hole C to plane Y ( see figure 6 ) shall be
= lo,20 mm 2 0,05 mm
L36
The distance from the centre of datum hole D to plane Y ( see figure 6 ) shall be
= 79,2 mm * 0,l mm
L37
The distance from the centres of datum holes C and D to plane X ( see figure 5 ) shall be
= 36,35 mm * 0,08 mm
L38
+ 0,05
The diameter of datum hole A and datum hole C shall be 3,00 mm mm. The dimensions of datum hole A
and datum hole C shall be - 0,oo

+ 1,o
= 1,2 mm mm
L39
- 0,o
= 2,6 mm min.
L40
= 1,5 mm min.
L41
= 4,0 mm min.
L42
= 0,3 mm max.
L43
= 45" t 1”
A3
The dimensions of datum hole B and datum hole D shall be
+ 1,o
= 1,2 mm mm
L39
- 0,o
2,6 mm min.
L40 =
= 1,5 mm min.
L41
= 4,0 mm min.
L42
= 0,3 mm max.
L43
+ 0,os
= 3,00 mm mm
L44
- 0,oo
= 3,5 mm k 0,l mm
L45
= 3,00 mm k 0,05 mm
L46
= 45" k 1”
A3
= 1,7 mm min.
Rl
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, B and C, respectively, within ir 0,l mm. Support area D shall be coplanar with datum plane 2 within k
0,15 mm.
The areas within L49 of the edge of the cartridge shall be recessed from the support areas.
The dimensions and positions of the support areas shall be
= 68,0 mm +, 0,l mm
L35
= 10,O mm k 0,l mm
L47
= 11,O mm If: 0,l mm
L48
= 0,5 mm k 0,l mm
L49
= 7,0 mm k 0,l mm
L50
= 30,O mm + 0,l mm
L51
= 5,s mm k 0,l mm
L52
= 64,5 mm k 0,2 mm
L53 c
6.10 Recognition holes ( figures 5, 6 and 7 )
There shall be 5 recognition holes numbered 1 to 5 as shown in figure 6.

ISOlIEC 11319:1993(E)
Their positions shall be defined by
= 43,35 mm & 0,lS mm
L54
= 3,7 mm & 0,l mm
L55
= 2,3 mm t 0,l mm
L56
= 6,4 mm ir 0,l mm
L57
= 3,7 mm * 0,l mm
L58
23 mm & 0,l mm
L59 =
= 6,4 mm 2 0,l mm
L60
= 79,0 mm & 0,2 mm
L61
All recognition holes shall have the cross-section F-F shown in figure 7 and shall have a diameter of 3,0 mm *
0,l mm
+ 0,3
= 1,2 mm mm
L62
- 0,l
= 5,0 mm min.
L63
These
One of the cross-sections shows a recognition hole closed by a plug, the other shows the plug punched
plugs shall withstand an applied force of 0,5 N max without being punched out.
This International Standard prescribes the following states of these holes.
- Recognition hole 1 shall be closed.
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 Hole ( figures 6 and 7 )
The position and dimension of the Write-inhibit Hole shall be defined by
= 3,7 mm t 0,l mm
L55
+ 0,3
mm
= 1,2 mm
L62
- 0,l
= 5,0 mm min.
L63 -
= 10,O mm & 0,l mm
L64
The diameter of the hole shall be 3,0 mm & 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 movable 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 to open or close the Write-inhibit Hole shall be between 1 N and 15 N.
6.12 Pre-positioning surfaces ( 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
= 1,5 mm k 0,l mm
L25
+ 0.0
= 2,4 mm mm
L65
- 0,l
+ 0,o
= 2,4 mm mm
L66
- 0,l
= 1,0 mm 2 0,l mm
L67
= 69,0 mm k 0,2 mm
L68
= 14,65 mm k 0,lO mm
L69
L70
= 13,15 mm 2 0,lO mm
= 45” 2x 1”
A4
6.13 Cartridge lid ( figures 3 and 8 )
The cartridge shall include a lid for protection of the tape during handling, 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 fixed relative to the case.
The location of axis A shall be defined by L27 and
= 7,5 mm k 0,l mm
L71
The auxiliary part rotates around axis B which 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
7,0 mm k 0,l mm
L72 =
= lo,1 mm * 0,l mm
L73 a
The rotation of the auxiliary part is controlled, by a cam at each end, to give the path indicated in figure 8.
When the lid is completely open, neither part shall extend above a plane located L77 above and parallel to plane
2.
= 14,8 mm min.
L74
= l1,5 mm t 0,2 mm
L75
= 1,2 mm 2 0,l mm
L76
= 22,3 mm max.
L77
= 85” k 2”
A5
When the lid is in a partially open position, neither part shall extend above a plane located L78 above and
parallel to plane 2.
= 22,5 mm max.
L78
= 14,9 mm max.
R2
The main part is shown in figures 3 and 8.
= 7,s mm k 0,l mm
L71
= 8,4 mm max.
L79
+ 0,O
= 15,2 mm mm
L80
- 0,5
+ 0,o
= 15,3 mm mm
L81
- 0,3
= 13,15 mm t 0,lO mm
L82
+ 0,o
= 14,7 mm mm
R3
0.
- 0,3
The design of the -locking mechanism is not specified 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
= 2,0 mm t 0,l mm
L83
= 6,3 mm 2 0,2 mm
L84
= 1,2 mm 2 0,l mm
L85
= 45” t 1”
A6
= 15” k 1”
A7
The lid release mechanism shall be actuated when the drive release pin is in the shaded area ( see figure 10 )
defined by
= 2,0 mm & 0,l mm
L83
c
= 8,2 mm & 0,2 mm
L86
= 0,7 mm * 0,2 mm
L87
= 15” 2 1”
A8
The force needed to unlock the lid lock shall not exceed 0,25 N in the direction 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 ( 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 International 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
= 34,5 mm & 0,l mm
L88
= 35,85 mm ? 0,15 mm
L89
= 4,0 mm * 0,l mm
L90
= 6,5 mm min.
L91
The reels shall be unlocked when the operating face of the release pin is located L95 from plane X. In this
position there shall be a clearance of L96 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
+ 0,3
mm
= 3,2 mm
L92
- 0,2
= 4,0 mm * 0,l mm
L93
+ 2,0
mm
= 39,0 mm
L94
- 0,o
+ 0,50
= 41,75 mm mm
L95
- 0,oo
= 0,5 mm min.
L96
= 7,8 mm max.
L97
= 4,0 mm & 0,l mm
L98
= 60,O” f: l,O”
A9
= 0,3 mm max.
R4
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 holes ( figure 5 )
The case shall have two circular reel access holes which shall allow penetration of the drive spindles.
The dimension and positions of the access holes shall be
= 23,00 mm ,+ 0,05 mm
L99
11,40 mm +, 0,05 mm
LlOO =
= 46,2 mm * 0,l mm
ho1
= 18,80 mm 2 0,05 mm
D2
6.16 Interface between the reek and the drive spindles ( figures 17 and 18 )
The drive spindles shall engage the reels in the area defined by
= 5,4 mm & 0,l mm
LlO2
= 4,4 mm * 0,l mm
LlO3
= 0,6 mm max.
L104
405 = 2,4 mm 2 0,l mm
= 0,2 mm max.
LlO6
407 = 2,4 mm t 0,2 mm
= 45” k 1”
= 15” If: 1”
= 60° zk 1”
= 0,2 mm max.
Rs
ISOlIEC 11319:1993(E)
+ 0,08
= 6,50 mm mm
D3
- 0,oo
+ 0,08
= 10,OO mm mm
- 0,oo
= 16,0 mm max.
D5
+ 0,o
= 18,0 mm mm
D6
- 0,l
Depth L 108 of reel driving hole shall be effective to the diameter D3 .
= 9,4 mm min.
LlO8
The reel spring force F shall be 0,6 N k 0,2 N in the direction shown in figure 18 when the cartridge is mounted
in the drive and the support area is L110 from datum plane 2.
= 7,05 mm + OJO mm
ho9
0,6 mm + 0,2 mm
LllO =
= 7,5 mm max.
Llll
= 8,0 mm max.
Ll12
= 60" + 1"
Al3
6.17 Light path ( figures 5, 7, 15 and 16 )
A light path shall be provided for sensing the leader and trailer tapes. When the lid is open, an unobstructed light
path shall exist from the 07 diameter light path hole to the outside of the cartridge via square holes of side L116
(see cross-section D-D in figure 7) and the light window in the cartridge lid.
= 34,5 mm 2 0,l mm
L88
= 8,35 mm + 0,lO mm
Ll13 -
= 0,5 mm max.
Ll14
= 6,05 mm t 0,lO mm
Lll5
= 23 mm k 0,4 mm
= 12,5 mm min.
Ll17
= 3,8 mm t 0,l mm
Ll18
= 2,5 mm t 0,4 mm
Ll19
= 6,05 mm f: 0,lO mm
Ll20
= 45" t 1”
Al4
= 5,50° +, 0,25'
+ 0,3
= 6,5 mm mm
D7
- 0,o
6.18 Position of the tape in the case ( figure 16 )
The tape shall run between two guide surfaces in a plane parallel to datum plane X and L121 from it.
= 12,46 mm k 0,lO mm
Ll21
The guide surfaces shall have a radius of R6 and shall be tangential, as shown in figure 16, to lines tangential to
the reel hubs that extend to points outside the case . These points shall be defined by
= 76,28 mm + 0,30 mm
L122
= 27,15 mm k 0,20 mm
L123
= 31,15 mm k 0,20 mm
L124
= 9,67 mm k 0,lO mm
Ll25
= 1,s mm min.
R6
6.19 Tape path zone ( figures 16 and 17 )
When the cartridge is inserted into the drive, the tape is pulled outside the case by tape guides and is no longer in
contact with the guide surfaces. The tape path zone of the case is the zone in which the tape shall be able to
move freely. This zone shall be maintained for both sides of the case and shall be defined by
= 76,28 mm 2 0,30 mm
L122
= 27,lS mm k 0,20 mm
L123
= 31,15 mm k 0,20 mm
LIZ4
= 9,67 mm t 0,lO mm
L125
= 23,0 mm k 0,l mm
L126
= 0,3 mm min.
L127
= 46,2 mm t 0,2 mm
LIZ8
= 11,4 mm +, 0,l mm
L129
= 0,3 mm min.
Ll30
+ o,oo
= 16,05 mm mm
D8
- OJO
6.20 Tape access cavity ( figure 5 )
When the cartridge is inserted into the drive, tape guides in the drive pull out the tape into the drive tape path.
The shape and dimensions of the access cavity for these tape guides shall be defined as follows. The two radii R7
are centred on datum holes A and B.
= 2,3 mm t 0,l mm
R7
The two radii Rg are centred on the centres of the reel access holes.
= 24,15 mm k 0,lO mm
R8
= I,0 mm k 0,l mm
L67
= 69,0 mm k 0,2 mm
L68
= 3,81 mm k 0,lO mm
L131
6.21 Tape access cavity clearance requirements ( figure 19 )
The case design shall provide clearance for drive tape threading mechanisms and shall be
= 1,2 mm max.
Ll32
+ 0,20
1,15 mm mm
L133 =
- 0,w
+ 0,o
= 14,0 mm mm
L134
- 0,2
= 66,8 mm min.
b35
= 10,O mm min.
L136 c
= 49” max.
A16
Beginning (
Lower half
splice
Loading grip
Tape reference edge
Recording surface of /
the magnetic tape
Figure 1 - Tape cartridge assembly bottom view (lid open)
Figure 2 - Tape cartridge assembly bottom view (lid closed)
ISOlIEC 11319:1993(E)
Label area
z
V
\
.____-__-__--_--_-__---------------------------------,
___--__--_---___-___--------------------------------,
,_______-__-__--_-__---------------------------------
__---_-------------_--------------------------------,
,___-----_-------------------------------------------
IT
I
\
Write-inhibit
L32
Incorrect insertion “m -94
indicator
protection recess 4
Incorrect insertion
protection incline
B
-I
-- -- -
z \o
-r
f
-Y
4 2r
- Loading grip
Loading grip 1
/-- Incorrect insertion channel
A-A
B-B
+
Figure 3 - Top side (lid closed)
L 47 L 48
L 48
i,L49 1 [DatumholeA
Datum area A --T,
I-
Datum hole B
X
Y
\Support area B
- Datum area B
-Datum hole D
Datum hole C
Datum area C
Support area D
Support area C
Datum area for
measurement
Figure 4 - Bottom side, datum and support areas
L 67 18
L 68
--
Pre-positi,. . . .
L 88
surf ace
I c llLisK
A
I-
Q
%
g
/-l-L
/
y Y
--- -~- _--
I.
+A
I
A
- -?? \
--
n IC -:-iF;~~l,
ZG
-J
a
m
I-&.+ lr\i \ 21
V 4-
__--
u-l
Figure 5 - Bottom side (lid removed)
R
S
c,
L37
C
I- -
Datum hole C -
Recognition hole 5
Datum hole
Recognition hole 4 -
1 I
I I :I \ / !‘I \
dk-!--&-i I 1 1 k- Recognition hoLe 1 L 59
Write-inhibit hole
Re cognition hole 3
L57
Recognition hole 2 /
IL60 :--
L-II
L 64 L 61
cl-
w
I
Q
L 45
\o
-
Ry
JQ
Figure 6 - Details of datum and recognition holes
D-0
F-F
Removable plug
Removable plug
Movable element
Figure 7 - Cross-sections of light path holes, recognition holes and write-inhibit hole
A
I
I
L81
AL27
Details of the side of the Lid Internal Lid structure
AS
/
\
\
I
\
:
\.r
----
Z
--A
Lid configuration when rotating Lid configuration when the lid is open
Figure 8 - Lid
ISOlIEC 11319:1993(E)
Insertion area for the
release pin of the Lid lock
G-G
Tape
Shell -J
Lid -/
Figure 9 - Lid release insertion channel
il’
\
\
\
\
\
\
II
Figure 10 - Lid release requirement
L96
A9
A
l-t-
From datum L95
L94 From datum
plane X
plane X
Reel lock in locked position Reel lock in released position
Figure 11 - Reel lock release
Figure 12 - Direction of force needed to unlock the reel lock
Figure 13 - Direction of force needed to unlock the lid lock
Figure 14 - Direction of force needed to open the lid
ISOlIEC 11319:1993(E)
X
q
L 118
t--l
Lid opener
----
Z
A-
Figure 15 - Light path and light window
Y
L-n
----
-------
T-
----m-w
L128
L129
G -
S
Y
co
i
Tape
Figure 16 - Internal tape path and light path
I-I
H-H
Figure 17 - Cartridge reel
Tape centre
Support area
L 110
i
a
M m
h2
-
Figure 18 - Interface with drive spindle
Z
Front view with the lid open
Y
J-J
c+1
L135
<
‘-r
Z
/----SOCKET
w
M
M
X
-Y
-_-_ -I _--
\
\
\
\
Bottom view with the lid closed
Figure 19 - Tape access cavity ckarance
Section 3 : Requirements for the unrecorded tape
7 Mechanical, physical and dimensional characteristics of the tape
7.1 Materials
The recordable area of the tape shall consist of ti base material (oriented polyethylene terephthaiate film or its
equivalent) coated on one side with a strong yet flexible layer of ferromagnetic material. The back surface of the
tape may be coated.
The leader and trailer tapes sh;lll consist of a translucent length of the same or equivalent base material without
the ferromagnetic coating or the back coating.
7.2 Tape length
7.2.1 Length of magnetic tape
The length of tape between PBOT and PEOT shall be 14,72 m minimum and 113 m maximum.
7.2.2 Length of leader and trailer tapes
The length of the leader and trailer tapes shall be 70 mm minimum and 90 mm maximum.
7.2.3 Splicing tape
The splicing tape shall have a maximum length of 13 mm.
7.3 Width
The width of the magnetic tape shall be 8,00 mm & 0,Ol mm. The difference between the largest and smallest
width shall be no more than C, pm peak-to-peak.
The width of the leader tape, trailer tape and splice shall be 8,00 mm t 0,02 mm.
The width shall be measured across the tape from edge to edge.
Procedure : Cover a section of the tape with a glass microscope slide. Measure the width with no tension applied
to the tape using a calibrated microscope, profile projector, or equivalent having an accuracy of at least 2,5 pm.
Repeat the procedure to obtain tape widths at five or more different positions along a minimum tape length of
1 m. The tape width is the average of the widths measured.
7.4 Discontinuities
There shall be no discontinuities in the tape between PBOT and PEOT, such as those produced by tape splicings
or perforations.
7.5 Thickness
7.5.1 Thickness of magnetic tape
This International Standard provides for two types of tape differing in thickness. The total thickness of a tape at
any point shall be between 12,0 pm and 14,O pm, or between 9,2 pm and 10,8 vrn.
7.5.2 Thickness of leader and trailer tape
The thickness of the leader and trailer tape shall be between 13 pm and 17 pm.
7.6 Longitudinal curvature
The radius of curvature of the edge of the tape shall not be less than 33 m.
Procedure : Allow a I m length of tape to unroll and assume its natural curvature on a fiat smooth surface.
Measure the deviation from a 1 m chord.
The deviation shall not be greater than 3,s mm.
This deviation corresponds to the minimum radius of curvature of 33 m if measured over an arc of a circle.
7.7 Cupping
The departure across the width of tape from a flat surface shall not exceed 0,9 mm.
Procedure : Cut a 1,O m t 0,l m length of tape. Condition it for a minimum of 3 h in the test environment by
hanging it so that the coated surface is freely exposed to the test environment. From the centre portion of the
conditioned tape cut a test piece of length approximately 25 mm. Stand the test piece on its end in a cylinder
which is at least 25 mm high with an minimum inside diameter of 8 mm. With the cylinder standing on an
optical comparator measure the cupping by aligning the edges of the test piece to the reticle and determining the
distance from the aligned edges to the corresponding surface of the test piece at its centre.
7.8 Coating adhesion ( figure 20 )
The force required to peel any part of the coating from the tape base material shall not be less than 0,96 N.
Procedure : Take a test piece of the tape approximately 380 mm long and scribe a line through the coating across
the width of the tape 125 mm from one end. Using a double-sided pressure sensitive tape, attach the test piece to
a smooth metal plate, with the coated surface facing the plate. Fold the test piece over l8oO adjacent to, and
parallel with the scribed line. Attach the metal plate and the free end of the test piece to the jaws of a tensometer
such that when the jaws are separated the tape is peeled. Set the jaw separation rate to 254 mrn/min. Note the
force at which any part of the coating first separates from the base material. If this is less than 0,EO N, the test
has failed. If the test piece peels away from the double-sided pressure sensitive tape before the force exceeds OJO
N, an alternative type of double-sided pressure tape shall be used.If the back surface of the tape is coated, repeat
the above procedure for the back coating.
Scribed line
Recording surface
tape
Figure 20 - Setup for measuring coating adhesion
7.9 Layer-to-layer adhesion
There shall be no tendency for the test piece to stick or for the coating to peel.
Procedure : Attach one end of a test piece of magnetic tape of 1 m in length to the surface of a glass tube of
external diameter 36 mm. Wind the tape on to the tube at a tension of 1,l N. Store the wound test piece in a
temperature of 45 OC + 3 OC and a relative humidity of 80% for 4 h. Store for a further 24 h in the testing
environment. Apply a force of 0,l N to the free end of the test piece and allow it to unwind slowly.
7.10 Tensile strength
The measurements shall be made in accordance with ISOPR 527.
The length of the test piece shall be 200 mm. The rate of elongation for all tensile tests shall be 100 mm/min
(ISO/R 527, rate ID).
7.10.1 Breaking strength
Load the test piece until the breaking point of the test piece 1s reached. The force required to reach that point is
the breaking strength of the tape.
The breaking strength shall not be less than 17,6 N.
7.10.2 Yield strength
e yield strength is the force necessary to produce a 5% elongation of the tape.
The yield strength shall be greater than 4,9 N.
The residual elongation, stated in per cent of the original tape length, shall less than O,O3 %.
eduse : ?‘vIeasure the initial length of a test piece of approximately 1 m with a maximum applied force of
N. Apply an additional force per total cross-sectional area of 20,5 N/mm” for a period of 10 min.
additional force and measure the length after 10 min.
Electrical resistance of the surface
The electrical resistance of any square area of the recording surface shall be within the ranges:
lo5 to 5 x 1012 G! for back-coated ta
The electrical resistance of any square area of the back-coating, if present, shall be less than 9 x 108
ure : Condition a test piece of tape in the test environment for 2 h- Position the test piece over two 24
carat gold-plated, semicircular electrodes having a radius r = 10 mm and a finish of at least N4, so that the
recording surface is in contact with each electrode. The electrodes shall be placed parallel to the ground and
= 8 mm between their centres. Apply the force necessary to produce a
parallel to each other at a distance d
tension of 5 N/mm to each end of the test piece. Apply a d.c. voltage of 100 V 2 10 V across the electrodes and
measure the resulting current flow. From this value, determine the electrical resistance. Repeat for a total of five
positions along the test piece and average the five resistance readings. For back-coated tape repeat the procedure
with the back-coating in contact with the electrodes. When mounting the test piece ensure that no conducting
paths exist between the electrodes except that through the coating under test.
NOTE 4 Particular attention should be given to keeping the surfaces clean.
ISOIIEC 11319:1993(E)
Figure 21 - Setup for measuring electrical resistance
7.13 Tape winding
The magnetic recording surface of the tape shall face outward from the cartridge and reels.
7.14 Light transmittance of tape
The light transmittance of the m
...