Designation:D5767−95(Reapproved2012)StandardTestMethodsforInstrumentalMeasurementofDistinctness-of-ImageGlossofCoatingSurfaces1ThisstandardisissuedunderthefixeddesignationD5767;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesthemeasurementofthedistinctness-of-image(DOI)glossofcoatingsurfacesusingelectro-opticalmeasuringtechniques.Thecoatingsmustbeappliedtoplanarrigidsurfaces.Thescalevaluesobtainedfromthealternativemethodsciteddonotagree.1.2Threetestmethodsarecoveredasfollows:1.2.1TestMethodA—Glossreflectancefactormeasure-mentsaremadeonthespecimenatthespecularviewingangleandatanangleslightlyoffthespecularviewingangle.ThevaluesobtainedarecombinedtoprovideaDOIvalue.Verynarrowsourceandreceptorapertureanglesareusedinthemeasurements.1.2.2TestMethodB—Thelightthroughasmallslitisprojectedonthespecimensurfaceanditsreflectedimageintensityismeasuredthroughaslidingcombedshuttertoprovideavalueofimageclarity.1.2.3TestMethodC—Thelightthroughapatternispro-jectedonthespecimensurfaceanditsreflectedimageintensityismeasureddirectlytoprovideavalueofimageclarity.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityofwhoeverusesthisstandardtoconsultandestablishappropriatesafetyandhealthpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D523TestMethodforSpecularGlossD823PracticesforProducingFilmsofUniformThicknessofPaint,Varnish,andRelatedProductsonTestPanelsD2457TestMethodforSpecularGlossofPlasticFilmsandSolidPlasticsD3964PracticeforSelectionofCoatingSpecimensforAppearanceMeasurementsD4039TestMethodforReflectionHazeofHigh-GlossSurfacesE284TerminologyofAppearanceE430TestMethodsforMeasurementofGlossofHigh-GlossSurfacesbyAbridgedGonio...
