Appendix D — Specifications Tape Drive and Media Specifications
November 2016 User Guide—Spectra T950 Library
555
LTO Barcode Element Specifications
FortheofficialIBMbarcodelabelspecification,seewww‐01.ibm.com/
support/docview.wss?uid=ssg1S7000429.Unlessotherwisespecified,
tolerancesareX.XXX±0.127mm,X.XXX±0.762mm.
Minimumsymbolheightis11.1mm,measuredtotheinsideofthe
label’sedge.
Thewide‐to‐narrowratiois2.75.
Thenarrowelementwidthis0.432mm+0.03mmor–0.076mm.
Thenominalwidthofthewidespacesandbarsis1.188mm.
Theinter‐charactergapis0.432mm+0.03/–0.076mm.
Theminimumquietzoneat thebeginningandendofaprintedbarcode
stringis4.32mm(10timesthenarrowelementwidth).
Thetotalnominalbarcodestringlength(includingquietzones)is
74.088mm.
Theedgeofthebarcodeistheedgeoftheprintedareaassociatedwith
thebar.Theedgeroughnessisthetransitionencounteredasa
horizontallineismovedverticallyfromallblacktoallwhite.Theedge
roughnessmaximumis0.038mm.
Variationbetweenallbars,whiteandblack,mustbelessthan±0.0381mm.
LTO Physical Label Specifications
Labelstockmustfitwithinthelabelrecessonthefaceofthecartridge
withoutcurlinguponthesidesorends(79mmX17mm+0/–0.8).
Minimumlengthsufficientforthequietzones,start‐stop,anddata
characters(nominal74.088mm).
Minimumwidthnolessthan1.5mmnarrowerthanthecartridgelabel
recesswidth.Cornersarecutwitha1.5mmradius.
Maximumlabelthickness,includingtheRFIDtag,ifpresent,together
withanyassociatedlayersandadhesivescannotexceed0.40
mm.
Thelabelandadhesivemusthaveanenvironmentalperformanceto
matchorexceedtheenvironmentalspecificationsofthecartridgeto
whichitisapplied.