NASA Technical Memorandum 100702
`
`Specification for
`IBM/IBM Compatible 3480
`Tape Cartridge
`
`SPECIEIC-fiTlCS FCfi IBH/IBM
`(KASfl-TM-10Q7C2)
`COMPATIBLE 3480 IlPEiCftBTBICei
`(NASA) ; 42 p
`09B
`
`N88-21168
`
`Ouclas
`G3/60 01U6033
`
`J. L. Perry
`
`May 1988
`
`NASA
`
`https://ntrs.nasa.gov/search.jsp?R=19880014784 2018-12-31T16:53:19+00:00Z
`
`FUJIFILM, Exh. 2010, p. 1
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`

`

`NASA Technical Memorandum 100702
`
`Specification for
`IBM/IBM Compatible 3480
`Tape Cartridge
`
`J. L. Perry
`Goddard Space Flight Center
`Greenbelt, Maryland 20771
`
`NASA
`
`National Aeronautics
`and Space Administration
`
`Scientific and Technical
`Information Branch
`
`1988
`
`FUJIFILM, Exh. 2010, p. 2
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`TABLE OF CONTENTS
`
`1. SCOPE AND CLASSIFICATION
`
`2. APPLICABLE DOCUMENTS
`
`3. DEFINITIONS
`
`4. TEST EQUIPMENT
`
`5. REQUIREMENTS
`
`6. PREPARATION FOR DELIVERY
`
`7. CONTRACT AWARDS
`
`Page
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`2
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`3
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`4
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`NATIONAL AERONAUTICS AND SPACE AIMINISTRATION
`
`GODDARD SPACE FLIGHT CENTER
`
`SPECTFTCMTON FOR I&I/IEM. CCMPATIBLE
`
`3480 TAPE CARTRIDGE
`
`This specification was developed by the Goddard Space Flight Center's
`Magnetic Tape Certification Facility (MTCF), Greenbelt, MD 20771, and
`generally reflects available state-of-the art products. Copies may be
`obtained from GSFC, Code 562.2.
`
`1. SCOPE AND CLASSIFICATION
`
`1.1 Scope. This specification covers the requirements for magnetic oxide-
`coated IEM/IEM compatible 3480 cartridges designed for use in digital
`recording applications. The 3480 cartridges covered by this specification
`are intended for use on 3480 compatible transports using the Group Coded
`Recording method for recording maximum densities of 37,871 Characters Per
`Inch (CPI).
`
`1 • 2 CLASSIFICATION
`
`1.2.1 General. Each individual 3480 cartridge configuration covered by
`this specification shall be identified by an item identifying part number
`consisting of the specification number with revision indicator (if any),
`and the indicators compiled from the part number code as follows:
`
`TM-100702
`
`34
`
`54
`
`TC
`
`Specification
`Number
`
`Tape
`Application Tape
`Indicator
`Length Indicator Container
`
`1.2.2 Part Number Code
`
`Part Number
`
`Indicator
`
`34
`
`54
`
`TC
`
`3480 Recording
`
`540 feet minimum
`
`Cartridge (3480)
`
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`2. APPLICABLE DOCUMENTS
`
`2.1 Specifications and Standards. The following documents, of the issue
`in effect on date of invitation for bids or request for proposal, form a
`part of this specification to the extent specified herein:
`
`Federal Specifications:
`
`FPP-B-636 - Boxes, Shipping, Fiberboard.
`
`Federal Standards:
`
`Fed. Std. No. 123 - Marking for Domestic Shipment (Civil
`Agencies).
`
`Fed. Test Method Std. No. 406/GEN - Plastics: Method of
`Testing.
`
`Fed. Test Method 406/1013 - Tensile Properties of Thin
`Plastic Sheets and Films.
`
`Fed. Test Method 406/4041 - Electrical Resistance.
`
`Organizations outside the Federal Government may obtain copies of Federal
`Specifications, Standards, and Handbooks as outlined under General
`Information in the Index of Federal Specifications and Standards and at the
`prices indicated in the Index. The Index, which includes cumulative
`monthly supplements as issued, is for sale on a subscription basis by the
`Superintendent of Documents, U. S. Government Printing Office, Washington,
`D. C. 20402.
`
`Single copies of Federal Specifications required by organizations outside
`the Federal Government for bidding purposes are available without charge
`from Business Service Centers at the General Services Administration
`Regional Offices in Boston, New York, Washington, Atlanta, Chicago,
`Kansas City, Fort Worth, Denver, San Francisco, los Angeles and Seattle.
`
`Federal Government organizations may obtain copies of Federal
`Specifications, Standards, and Handbooks and the Index of Federal
`Specifications and Standards from established distribution points in their
`agencies.
`
`Military Standards:
`
`MII/-STD-105D - Sampling Procedures and Tables for Inspection
`by Attributes.
`
`Copies of Military Specifications and Standards required by suppliers in
`connection with specific procurement functions should be obtained from the
`procuring agency or as directed by the contracting officer.
`
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`NASA Standards:
`
`NHB 5300.4(1C) - NASA Quality Publication - Inspection
`Provisions for Suppliers of Space
`Materials, Parts, Components and
`Service.
`
`2.2 Other Publications. The following documents form a part of this
`specification to the extent specified herein. Unless a specific issue is
`identified, the issue in effect on the date of invitation for bids or
`request for proposal shall apply.
`
`American National Standard Institute (ANSI):
`
`X3B5/86-001 - American National Standard for Unrecorded
`Magnetic Tape and Cartridge for Information
`Interchange.
`
`American Society for Testing and Materials (ASTM) Standards:
`
`D 638 - Test for Tensile Properties of Plastics.
`
`3. DEFINITIONS
`
`Where the listed terms are used herein, the following definitions apply
`unless otherwise stated:
`
`3.1 Acceptable Quality Level (AQL). The maximum percent defective (or the
`maximum number of defects per hundred units) that, for purposes of sampling
`inspection, can be considered satisfactory.
`
`3.2 Azimuth. The angular deviation, in minutes of arc, of the mean flux
`transition line from the line normal to the tape reference edge.
`
`3.3 Beginning of Tape (EOT). Indicated by the start of the density-
`identification mark.
`
`3.4 Bit. A single digit in the binary number system.
`
`3.5 Bit-Cell. A distance along the track between the initial flux
`transition of adjacent bits.
`
`3.6 Block. A group of contiguous recorded bytes considered and
`transported as a unit. Blocks are separated by an interblock gap.
`
`3.7 Byte. A group of eight data bits (nine encoded bits) operated on as a
`unit.
`
`3.8 Cartridge. A container holding a supply reel of 12.65mm (1/2 in) wide
`magnetic tape with an attached leader block at the BOT end.
`
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`3.9 Certifying Agency. The National Aeronautics and Space Administration,
`Goddard Space Flight Center (NASA-GSFC).
`
`3.10 Character. One or more bytes acted on as a unit.
`
`3.11 Coincident Dropout. A coincident dropout is a simultaneous dropout
`condition on two or more tracks of a 9-track group.
`
`3.12 Data Density. The number of single-byte characters stored per unit
`length of tape, usually expressed in characters per millimeter (cpmm) or
`characters per inch (cpi).
`
`3.13 Dropout. A dropout is a loss of read-back amplitude. A dropout
`exists when the read-back signal amplitude is 25% or less of the average
`read-tack signal amplitude.
`
`3.14 End of Tape (EOT). The last point of the tape for any recording.
`
`3.15 Group Code Recording (GCR). A data-encoding method where an 8-bit
`recording group of bits (one byte) is encoded into a 9-bit group for
`recording on magnetic tape.
`
`3.16 Interblock Gap. A recorded interval between adjacent recorded blocks
`or other special marks.
`
`3.17 Physical Recording Density. The number of recorded flux transitions
`per unit length of track, usually expressed in flux transitions per
`millimeter (Upturn) or flux transitions per inch (ftpi).
`
`3.18 Skew. The deviation of bits within a frame from a line perpendicular
`to the tape reference edge.
`
`3.19 Track. A longitudinal area on the tape along which a series of
`magnetic signals can be recorded.
`
`4. TEST EQUHMENT
`
`The qualification tests and acceptance tests specified herein which require
`recording data on the tape will be performed using the following listed
`systems:
`
`TestMaster Model CTC-100 3480 Cartridge Certifier
`
`IEM Personal System II/Model 30 Host Computer
`
`HM magneto-resistive thin-film 18-track write/read heads
`
`IEM 3480 Tape Drives
`
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`5. KEQUIKEMENIS
`
`5.1 General Requirements. The TEK/IEK Compatible 3480 cartridges supplied
`under this specification shall be new and shall have been tested for
`confonnance to the requirements specified herein. In addition, the
`supplier must have met the requirements of NASA Quality Publication NHB
`5300.4(1C).
`
`5.1.1 Product Qualification. Qualification testing shall be conducted at
`the Magnetic Tape Certification Facility (MTCF), Goddard Space Flight
`Center, Greeribelt, MD 20771 and shall consist of all tests listed in this
`section. All samples subjected to these tests must also conform to the
`requirements listed in this specification, unless otherwise specified.
`Qualification of a particular tape type of a given base material,
`thickness, width, oxide, and performance characteristics shall constitute
`qualification of all tapes of identical characteristics regardless of
`length.
`
`5.1.1.1 Qualified Products Listing. The TEN/IBM. Compatible 3480
`cartridges supplied under this specification shall be products which have
`been tested and have passed the qualification tests specified herein, and
`that are listed or approved for listing on the applicable Federal Qualified
`Products List (QPL).
`
`5.1.1.2 Qualification Product Testing. Products may be submitted by
`prospective suppliers of TEM/TEfi Compatible 3480 cartridges on dates to be
`announced by the certifying agency. A prospective supplier may submit only
`the type of cartridge requested for testing on these submission dates.
`Qualifying cartridges being submitted must be identified by a
`manufacturer's designator. Should the submitted product fail to meet
`specifications as defined herein, the certifying agency reserves the right
`to refuse to accept such a product for additional qualification tests until
`satisfactory data and test results have been submitted indicating
`correction of product deficiencies. The certifying agency shall accept
`only one type of cartridge for qualification testing from each prospective
`supplier within any one-year period. Two copies of the manufacturer's
`printed commercial specifications and technical data shall be submitted
`with the cartridge samples. The certifying agency reserves the right to
`levy a charge to cover cost of product qualification testing; however, such
`charges shall only be made when so specified in the procurement documents.
`
`5.1.1.3 Samples for Qualification. The sample size shall consist of
`thirty (30) cartridges for each particular type of a given base material,
`thickness, oxide and performance characteristics for which qualification is
`desired. All samples shall be submitted on cartridges which conform to the
`requirements of this specification unless otherwise specified. The
`manufacturer shall also submit test data showing that each cartridge type
`for which qualification is desired has successfully met all of the
`requirements of this specification.
`
`5.1.1.4 Sample Disposition. Samples submitted for qualification shall be
`retained by the certifying agency.
`
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`5.1.1.5 Qualification Withdrawal. A supplier's qualified product listing
`shall be withdrawn for any of the following reasons: (1) the product
`offered under contract does not meet the requirements of the specification;
`(2) the manufacturer is delivering a product differing in material and/or
`manufacturing process from the one originally qualified; or (3) other
`reasons considered to be sufficient by the certifying agency.
`
`5.1.1.6 Requalification. A supplier's product, once withdrawn from the
`QPL, shall not be accepted for requalification within one year from the
`date of product listing withdrawal notice and until satisfactory data and
`test results have been submitted to the certifying agency by the supplier
`indicating correction of the product's fault(s).
`
`5.1.1.7 Process Change. Qualification and certification of a supplier's
`product under this specification, once established, applies only to those
`cartridges manufactured by the specific process in use at the time of
`qualification. All process changes shall be reported to the certifying
`agency indicating the extent and probable effect of such changes on the
`delivered product. The certifying agency reserves the right to require six
`week notice, and sufficient samples of the new product for quality
`assurance tests, from the supplier prior to delivery of products
`manufactured under any such change in process. The foregoing requirement
`does not in any way relieve the manufacturer of delivery requirements,
`quality control, and testing necessary to ensure that all products
`delivered under this specification are equal to or better than those
`products originally submitted for qualification.
`
`5.1.2 Product Acceptance Testing. Acceptance testing shall be conducted
`at the Magnetic Tape Certification Facility, Goddard Space Flight Center,
`Greenbelt, Maryland 20771. Normal acceptance testing will be those tests
`indicated in Test Groups A, B, and C (Table 1). Groups A, B, C, and D
`tests shall be required at the time of qualification and as often
`thereafter as is deemed necessary to ensure continued compliance with the
`specified requirements. Failure to conform to any of the requirements of
`Group D tests or inspection shall be cause for rejection of that lot
`represented by the samples.
`
`5.1.2.1 Samples for Acceptance Testing. Samples shall be drawn from lots
`delivered to the MICF unless otherwise indicated in the procurement. The
`number of samples required for acceptance testing is governed by lot size
`and shall be in accordance with MIL-STD-105D, Normal Inspection, Level 1,
`Single Sampling Plan, at an AQL of 2.5.
`
`5.1.3 Lot Size and Definition. On orders exceeding 1000 cartridges, the
`minimum lot size shall be 1000 and the maximum shall be 3200. For orders
`of less than 1000 cartridges, the lot size may be the order size. A lot
`shall consist of cartridges of the same type that have been manufactured
`and processed from the same batch or mix of the basic coating materials
`used in the production of the cartridge. This batch or mix shall be
`sufficient to ensure compliance with lot size requirements. In the case of
`a continuous batching or production process, a lot shall consist of
`
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`cartridges selected from concurrent production runs to meet lot size
`requirements.
`
`5.1.4 Compatibility with Other Cartridges. Cartridges supplied under this
`specification shall not act as an inhibitor. The performance of other
`cartridges shall not be degraded by the use of any other QPL cartridge when
`operated on the same tape drives.
`
`5.1.5 Materials
`
`5.1.5.1 Tape. The magnetic tape shall consist of a backing or base of
`polyethylene teraphthalate film (or its equivalent) coated on one side with
`a layer of ferromagnetic material suspended in a suitable binder. The back
`surface of the tape may also be coated.
`
`5.1.5.2 Toxic Compounds. Materials which may cause bodily harm through
`contact, inhalation or ingestion during normal use of the cartridges shall
`not be used.
`
`5.1.5.3 Flammable Materials. Material which will ignite from a match
`flame and when so ignited will continue to burn in a still carbon dioxide
`environment shall not be used.
`
`5.1.6 Splices. All tape lengths supplied under this specification shall
`be continuous and splice free.
`
`5.1.7 Operating Environment. Operating temperatures shall range from 50
`to 90 degrees F (10 to 32 degrees C) and relative humidity from 20 to 80
`percent.
`
`5.1.8 Storage Environment. After storage for one year from date of
`delivery at 40 to 120 degrees F (5 to 49 degrees C) and 20 to 80 percent
`relative humidity, no deterioration of magnetic oxide, binder, or base
`shall take place which will prevent the magnetic tape from meeting the
`specification.
`
`5.1.9 Workmanship and General Examination
`
`5.1.9.1 Workmanship. The magnetic tapes and cartridges shall be
`manufactured and processed in a careful and workmanlike manner in
`accordance with good practice. All surfaces of the tape shall be free from
`raised edges, dust, flakes, powder, holes, scratches, creases, or any other
`defects which would render the tape unsuitable for its intended use.
`
`5.1.9.2 General Examination. The tape as initially received from the
`supplier shall be examined to determine that cartridges and tapes are free
`from the defects listed in table II.
`
`5.1.10 Physical Damage. All cartridges and tapes shall be free from
`physical damage. Any tape that is found to be physically damaged during
`any quality assurance testing shall be considered a failure.
`
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`5.2 Inspection
`
`5.2.1 Responsibility for Inspection. Unless otherwise specified in the
`.contract or purchase order, the supplier is responsible for the performance
`of all inspection requirements as specified herein. Except as otherwise
`specified, the supplier may utilize his own facilities or any other
`commercial laboratory acceptable to the government. The government
`reserves the right to perform any of the inspections set forth in the
`specification where such inspections are deemed necessary to ensure that
`supplies and services conform to prescribed requirements.
`
`5.2.2 Quality Oonformance Inspection. The supplier shall be responsible
`for the performance of quality conformance inspections. The contractor
`shall select a sample number of cartridges from each lot offered for
`delivery and shall subject the samples to the examinations and tests
`necessary to ensure compliance with the specification requirements.
`Furthermore, every cartridge in any lot offered for delivery shall be 100
`percent dropout tested to ensure compliance with the requirements of this
`specification.
`
`5.2.3 Reporting of Quality Conformance Inspection. Unless otherwise
`directed by the contracting officer, the supplier shall maintain a complete
`record of all production test results for the duration of the contract.
`The production test records shall be available to the government at all
`reasonable times. The records shall include the information necessary to
`identify the lot, the cartridges, the inspection, and the date of the test.
`
`5.3 Test Sample Environmental Conditioning
`
`5.3.1 Standard Temperature and Humidity. The standard temperature and
`humidity is 75 +/~ 5 degrees F (24 +/~ 3 degrees C), 50 +/~ 3 percent
`relative humidity. This is the temperature and humidity used for
`conditioning and/or making tests and measurements unless otherwise
`specified.
`
`5.3.2 Qualification Sample Preliminary Conditioning. Preliminary
`conditioning of each cartridge will be required prior to qualification
`testing, unless otherwise specified, to relieve stresses and establish
`uniformity. The cartridges shall be conditioned at 125 +/~ 5 degrees F (52
`+/~ 3 degrees C), 80 to 90 percent relative humidity for 3 hours. The
`cartridges shall then be conditioned at 70 +/- 5 degrees F (21 +/~ 3
`degrees C), 50 +/- 5 percent relative humidity for a minimum of 3 hours.
`This temperature-humidity cycle shall be repeated with the transition times
`between temperature extremes not to exceed 60 minutes, until the tape has
`been subjected to a total conditioning time, including transitions, of 24
`hours. After the last cycle, the cartridges shall then be held in a room
`conditioned at the Standard Temperature and Humidity for a minimum of 24
`hours before any tests are made. Preliminary conditioning shall not be
`required for supplier quality conformance or acceptance testing.
`
`FUJIFILM, Exh. 2010, p. 11
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`5.4 Product Physical Requirements
`
`5.4.1 General. The tape cartridge consists of a cartridge case, magnetic
`tape, brake mechanism, file-protect assembly, and leader block. When
`fabricated, the final assembly must meet the mechanical specifications
`given. Particular attention should be given to the design of the reel and
`flange assembly to minimize tape offset. Figure 1 shows the critical
`mechanical requirements that must be met to ensure compatibility with
`magnetic-tape-drive assemblies. All dimensions have a tolerance of +/~ 25
`mm (0.01 in) unless otherwise specified.
`
`5.4.2 Tape-Reel Hub Requirements.
`
`Straightness: 0.04 mm (0.0016 in)
`
`Perpendicularity to datum B: 0.07 mm (0.0028 in)
`
`Cylindricity: 0.05 mm (0.002 in)
`
`Rate-of Change (across the width): 0.025 mm per mm
`(0.025 in per in)
`
`Full indicator movement to datum B: 0.2 mm (0.008 in) FIM
`
`NOTE: Datum B is a plane defined by the pitch line of the
`hub teeth at the 41 mm (1.614 in) diameter (Figure 1 part
`5 of 13).
`
`5.4.3 File-Protect Assembly. The file-protect assembly must rotate when a
`force between 2.02 foot-pounds and 0.45 foot-pound is applied at a tangent
`to the surface of the thumbwheel. When the assembly has been rotated so
`that the white spot is visible and centrally placed, writing is inhibited.
`
`5.4.4 Leader-Block Pull-Out and Insertion Forces. The pull-out force is
`the amount of force required to pull the leader-block and attached tape out
`of the cartridge. Insertion force is the amount of force required to push
`the leader-block into its latched position in the cartridge. The leader-
`block pull-out force shall be a minimum of 0.67 foot-pound and the
`insertion force shall be a maximum of 2.7 foot-pounds when measured at an
`angle of 48 degrees +/~ 1 degree (Figure 1 Part 1 of 13).
`
`5.4.5 Bond Strength between the Leader-Block and Tape. The bond strength
`between the leader-block and tape is the amount of force required to pull
`the leader-block free from the tape. The leader-block shall remain
`attached to the tape when a force of 2.25 foot-pounds is applied to the
`leader block at an angle of 38 degrees +/- 2 degrees (Figure 1 part 8 of
`13).
`
`5.4.6 Tape Winding. Tape shall be wound in a counterclockwise direction,
`with the recording surface toward the hub, when the cartridge is viewed
`from the top.
`
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`5.4.7 Winding Tension. Tape shall be wound with a tension of 0.5 foot-
`pound +/- 0.075 foot-pound.
`
`5.4.8 Brake-Button Material. The brake-button material shall be nylon 6/6
`with 2% +/- 1% molybdenum disulfide or equivalent.
`
`5.5 Tape
`
`5.5.1 Dimensions
`
`5.5.1.1 Length. The total length of cartridge tape from leader-block to
`the end of the tape should be a minimum of 541 feet.
`
`5.5.1.2 Width. The width of the tape shall be 12.650 mm +/- 0.025mm
`(0.498 in +/- 0.001 in). The width shall be measured across the tape from
`edge to edge when the tape is under a tension of less than 0.063 foot-
`pound. This measurement shall be made using a tool maker's microscope or
`equivalent.
`
`5.5.1.3 Thickness. The total thickness of the tape at any point shall be
`between 1020 micro-inches and 1330 micro-inches.
`
`5.6 BOT/BOT
`
`5.6.1 EOT. The EOT should begin not further than 52.76 inches or 4.39
`feet from the leader-block.
`
`5.6.2 EOT. The EOT should not be less than 169.3 inches or 14.1 feet from
`the tape-to-hub junction.
`
`5.6.3 BOT to EOT. The distance from the Beginning of Tape to the End of
`Tape should be a minimum of 523 feet.
`
`5.7 Slitting
`
`5.7.1 Requirement. The tape edges shall be cut clean with no ragged
`coating or backing. No torn particles shall be clinging to the edges of
`tape. The coating shall not be mashed or fractured along the edges.
`
`5.7.2 Test Equipment. A microscope with lOOx magnification.
`
`5.7.3 Sample Preparation. Standard.
`
`5.7.4 Test Procedure. A minimum length of five feet of tape at the
`beginning, middle and end shall be inspected on both edges for evidence of
`poor slitting. The tape shall be examined for compliance with this
`specification.
`
`10
`
`FUJIFILM, Exh. 2010, p. 13
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`

`5.8 Magnetic Properties
`
`5.8.1 Requirement. The intrinsic coercive force of the recording surface
`shall be 520 Oersteds +/- 30 Oersteds when measured in the longitudinal
`direction.
`
`5.8.2 Test Equipnent. Scientific Atlanta Model 651B BH Meter.
`
`5.8.3 Sample Preparation. Standard.
`
`5.8.4 Test Procedure. The BH Meter shall be calibrated using the
`manufacturer's procedures. Test samples shall then be cut and measured.
`The results will then be logged.
`
`5.9 Tensile Strength
`
`5.9.1 Requirement. The minimum tensile strength shall be 11.0 pounds per
`one-half inch of tape width.
`
`5.9.2 Test Equipment. The Amthor Testing Instrument Company, Inc.,
`Vertical Tensile Tester Type 272 or equivalent shall be used for this test.
`
`5.9.3 Sample Preparation. QPL. Lengths of sample tapes sufficient for
`this test shall be unwound from the cartridges and placed in a 70 +/~ 5
`degrees F (21 +/~ 3 degrees C), 50 +/- 5 percent relative humidity
`environment for at least 24 hours prior to testing. The tape shall be free
`of bends and kinks.
`
`5.9.4 Test Procedure. A strip of tape not less than 7 inches in length
`shall be clamped in the grips set for an initial separation of 4 inches.
`The test specimen shall be clamped in the testing machine taking care to
`align the long axis of the specimen with an imaginary line joining the
`points of attachment of the grips to the machine. The grips shall be
`tightened evenly and firmly to the degree necessary to prevent slipping of
`the specimen during the test. The rate of grip separation shall be 12
`inches per minute. The point of yield shall be noted and logged.
`
`5.10 Shock Tensile Strength
`
`5.10.1 Requirement. The minimum energy absorption shall not be less than
`1.16 foot-pounds per one-half inch of tape width.
`
`5.10.2 Test Equipment. The equipment for the test shall be a pendulum-
`type slipperiness tester, as specified in the Bureau of Standards Research
`Paper RP1879 Volume 40 of May 1948, or equivalent such as that made by
`Wiedmann Baldwin, King of Prussia, PA.
`
`5.10.3 Sample Preparation. QPL. Lengths of sample tapes sufficient for
`this test shall be unwound from the cartridges and placed in an environment
`of 70 +/- 5 degrees F (21 +/" 3 degrees C), 50 +/- 5 percent relative
`
`11
`
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`

`humidity for at least 24 hours before the test. The tape samples shall be
`free of bends and kinks.
`
`5.10.4 Test Procedure. The tape shall be looped through the clamps,
`magnetic side inward, and securely clamped. The pendulum shall be raised
`until it makes an angle with the vertical corresponding to a potential
`energy of 1.16 foot-pounds. The pendulum shall then be released smoothly
`and shall be allowed to strike the free loop of the tape. The tape shall
`not break.
`
`5.11 Modulus of Flexibility
`
`5.11.1 Requirement. The minimum angle of deflection shall be greater than
`35 degrees.
`
`5.11.2 Test Equipment. Test fixture as shown in figure 2.
`
`5.11.3 Sample Preparation. Standard.
`
`5.11.4 Test Procedure. The sample shall be clamped in the test fixture in
`a horizontal plane with 3 inches of magnetic tape extended beyond the point
`of clamping, free to assume a natural curvature which will be a function of
`its flexibility. The sample shall be clamped with the oxide coating facing
`the direction of curvature. The angle of curvature (deflection from the
`horizontal) shall be measured from axis to the free end of the sample. The
`angle shall be measured in degrees from the horizontal axis.
`
`5.12 Elongation Under Stress
`
`5.12.1 Requirement. The elongation shall not exceed 0.30 percent.
`
`5.12.2 Test Equipment. A suitable fixture from which to hang the tape
`sample, with positive nonslipping tape clamps, a standard scale for
`measuring length, a scribe with which to mark the tape, a 7X magnifier
`through which to measure results, a 30-gram weight, and a 5-pound weight.
`
`5.12.3 Sample Preparation. QPL. Samples at least 24 inches long shall be
`clamped so as to hang in the test area at 70 +/~ 5 degrees F (21 +/~ 3
`degrees C), 50 +/- 5 percent relative humidity for at least 24 hours under
`no externally applied stress before tests are started.
`
`5.12.4 Test Procedure. The tape sample shall be clamped in the fixture
`and the 30-gram weight attached to the free end. A reference mark shall be
`scribed on the tape approximately 20 inches from the point of clamping.
`The mark will be used as a reference to measure elongation and recovery of
`the sample. The distance between the mark and clamping point shall be
`measured accurately to the nearest 0.01 inch. This distance shall be taken
`as the base distance for calculation of residual elongation. When the
`measurement of the base distance has been made, the test shall begin. A
`weight of 5 pounds for all polyester film base shall be attached to the
`tape below the mark at zero time, and allowed to hang undisturbed for 180
`minutes +/-30 seconds, at which time the weight shall be removed from the
`
`12
`
`FUJIFILM, Exh. 2010, p. 15
`FUJIFILM v. Sony, 2018-00877
`
`

`

`tape. The tape shall be allowed to hang under its own weight for an
`additional 180 minutes +/~ 30 seconds. The 30-gram weight shall then be
`attached to the free end of the tape. The distance between the mark and
`the point of clamping shall then be measured to the nearest 0.01 inch. The
`difference between the base distance and the final distance shall be
`expressed as a percent of the base distance to determine compliance with
`this specification.
`
`5.13 Longitudinal Curvature
`
`5.13.1 Requirement. The deviation of each tape edge from a straight line
`shall not exceed 0.125 inch per 36-inch length of tape.
`
`5.13.2 Test Equipment. No special apparatus other than a 48-inch
`straight-edge is required.
`
`5.13.3 Sample Preparation. QPL.
`
`5.13.4 Test Procedure. A 36-inch length of tape shall be made to lie flat
`on a horizontal surface. The tape shall be under no tension and free from
`bends, kinks, or other visible distortions. The straight-edge shall be
`placed along either edge of the tape and any deviation from a straight line
`shall be measured.
`
`5.14 Magnetic Coating Electrical Resistance
`
`5.14.1 Requirement. The magnetic coating shall have the ability to
`dissipate a static charge. The electrical resistance of the magnetic
`coating shall have a minimum resistivity of 0.5 megohms/square and a
`maximum of 500 megohms/square.
`
`5.14.2 Test Equipment. The apparatus for this test shall consist of that
`required by Method 4041, Insulation Resistance for Flexible Tapes, of
`Federal Test Method Std. No. 406; and Freed Transformer Co. Model 1620
`megohmeter.
`
`5.14.3 Sample Preparation. QPL or Standard. Lengths of tape sufficient
`for this test shall be unwound from the reels and placed in a 70 +/~ 5
`degrees F (21 +/~ 3 degrees C), 50 +/- 5 percent relative humidity
`atmosphere without kinks or bends and allowed to remain for at least 24
`hours before the test.
`
`5.14.4 Test Procedure (Oxide Surface). The surface electrical resistance
`of the oxide construction shall be determined in accordance with Method
`4041, Insulation Resistance for Flexible Tapes, of Federal Test Method Std.
`No. 406 to determine conformance with this specification. Two layers of
`the sample tape shall be placed in the strip electrodes, backing material
`to backing material, so that only the oxide surfaces of the tape are in
`contact with the electrodes. The method of clamping shall be similar to
`that specified. The measurement potential shall be 500 +/~ 10 volts dc.
`
`13
`
`FUJIFILM, Exh. 2010, p. 16
`FUJIFILM v. Sony, 2018-00877
`
`

`

`5.15 Back Coating Electrical Resistance
`
`5.15.1 Requirement. The electrical resistance of the back coating (when
`applicable) shall not be greater than 1.0 megohm/square.
`
`5.15.2 Test Equipment. (Same as stated in paragraph 5.14.2)
`
`5.15.3 Sample Preparation. (Same as stated in paragraph 5.14.3)
`
`5.15.4 Test Procedure (Backing). (Same as stated in paragraph 5.14.4)
`
`5.16 Layer-to-Layer Adhesion
`
`5.16.1 Requirement. The tape shall show no sticking or layer-to-layer
`adhesion when tested as specified.
`
`5.16.2 Test Equipment. The test equipment shall consist of: a
`temperature and humidity controlled chamber in which to process the
`prepared samples; a special winding apparatus; hollow metal tubes on which
`tape samples are wound; and 2000-gram weights. The tube shall be made of
`nonoxidizing metal such as brass or corrosion resisting steel 0.5 inch in
`diameter and 4 inches in length, and shall weigh no less than 15 grams nor
`more than 30 grams. The tube shall be capable of being mounted in bearings
`so that it may be rotated freely around its central axis and easily removed
`from the bearings.
`
`5.16.3 Sample Preparation. QPL or Standard.
`
`5.16.4 Test Procedure. A 3-foot sample length of tape shall be fastened
`at one end, magnetic side down, to the 0.5-inch diameter hollow tube with a
`nonflowing adhesive material. The tube shall then be mounted in the
`bearings so that the tape hangs free below the tube.
`
`Attached to the free end of the tape shall be the 2000-gram weight. A
`small strip of double-coated adhesive tape shall be affixed to the magnetic
`side of the tape 1 inch above the weight. The tube shall then be slowly
`and uniformly rotated so that the tape, held in