ofEstablishment:1955-04-14ofRevision:2019-02-20ofPublicNoticeinOfficialInvestigatedby:JapaneseIndustrialTechnicalCommitteeonConsJISS6005:2019,FirstEnglisheditionpubliTranslatedandpublishedby:JapaneseSMitaMTBuilding,3-13-12,Mita,Minato-ku,Tokyo,108utilizedinanyformorbyanymeans,electronicormechanical,includIntroduction 1 12Normativereferences 1 2 3 3 3 36.2Hardnessdegreeofblackleads 4 4 5 5 6 6 6 68.4Hardnessdegreeofblacklea 7 AnnexJA(informative)Exampleofline-drawingd AnnexJB(informative)Comparisontable tion(JSA)withthedraftbeingaConsequentlyJISS600AttentionisdrawntothepossibilitythatsomepartsofthisStandardpatentrights,applicationsforapatentafteropeningtothepublicorutilitresponsibleforidentifyinganyofsuchpatenopeningtothepublicorutilitymodelrights.JAPANESEINDUSTRIALSTANDARDThisJapaneseIndustrregisteredin2018withoutanymodificationsofitstechnicalcontents,butalsoincorpratingrequirementsthatareuniquetoJIS,namely,thoseregardingcTheverticallinesonbothsidesanddrespondingInternationalStandard.AlistofmodificationswiththeexplanatiThisStandardspecifiesrequirementsfocolourleads,respectively).bolofdegreeofcorrespondencClassification,dimensions,qualityandtestmethods—ParInaddition,symbolswhichdenotethedegreeofcorrespondenceincontentsbetweentherelevantInternationalStan(identical),MOD(modified),andNEQ(notequivalent)accordinThefollowingstandardscontainprovisionswhich,throughreferenceinthiststituteprovisionsofthisStandard.Themostrecenteditionsofthestandards(includingamendments)indicatedbelowshallbeapplied.JISB7502MicrometersJISB7507Vernier,dialanddigitalcallipersJISB7516MetalrulesJISK0050GeneralrulesforchemicalanalysisJISK0116GeneralrulesforatomicemissionspectrometryJISK0121GeneralrulesforatomicabsorptionspectrometryJISK8180Hydrochloricacid(Reagent)JISL0801GeneralprinciplesoftestingmethodsforcolourfastnessJISL0804GreyscaleforassessingchangeincolourJISL0841TestmethodsforcolourfastnesstodaylightJISL0842Testmethodsforcolourfastnesstoenclosedcarbonarclamplight2JISL0843TestmethodsforcolourfastnesstoxenonarclamplightJISP8124Paperandboard—DeterminationofgrammageJISP8148Paper,boardandpulps—Measurementofdiffusebluereflectancefac-JISS6013MechanicalJISZ8102Namesofnon-luminousobjectcoloursJISZ8401GuidetotheroundingofnumbersJISZ8703StandardatmosphericconditionsfortestingJISZ8722Methodsofcolourmeasurement—ReflectingandtransmittingobjectsJISZ8802MethodsfordeterminationofpHofaqueoussolutionsISO5-3Photographyandgraphictechnology—Densitymeasurements—ISO12757-1Ballpointpensandrefills—Part1:GeneraluseISO14145-1Rollerballpensandrefills—Part1:Generalusesolidwritingmaterialformechanicalpencil,whichconsistsof(e.g.graphite)andabindingagent(anicpolymer,clay)gesolidwritingmaterialformechanicalpencil,whichconsistsofpigmentanddyestuff,fatcombinationoftwoalphanumericoralphabeticalsymbolsusedtoindicatethehardnessanddensity(darkness)oftheleadwHardnessincreasesfrom6Bto9H,anddennumericalsymbolusedtoclassifyleadsbythickness(diameter)ofTheseareusedtolabelormarkleadboxestoindic3theraccordingtomarkingdiameterandhardnessdegreeTable1Classificationofblack一一1一_a)225ColournamesofForcolourleads,thecolournam赤青だいだい色紫白緑黑ThebendingstrengthofblackleadsandtionsinTable3,whe42一一一一一一一一一一一一一 一一一一一一一一一一一一一一一一一一一Thehardnessdegreeofblackleadsshallbeevaluatedtively,becauseitsscientificdefinitionquantitativelyasthewritingdensityofHBbymore,itshallbeconfirmedqualitativelyfortheleadsofthesamebrandintthedensityandthehardnessbyhandwriting(visuaficationofTable4.Fortheleadsofthesamebrand,theorderofnotreverseoralterintheorderofthehardnessdegree.A:Recordingtype25Table5Limitsfor2)Migrationreferstoaccidentalingestionbyachiordrawnlinescontainingcertainelements,andresult3)CertainelementsChangeincolouroftheleadwithmarkingdiameter2mTheactualdiameterofLengthotherthanspecifiedinT26Unlessotherwisessphericconditionoftemperature20℃±15℃andordinaryrelatasspecifiedinJISZ8703.Generalrequir8.2RoundingofnumbersObtaintheresultstoonedigitlowerthanthespeantvaluesaccordingtoRuleAofJISZ8401.Forcalculationbycomputer,therounbeused.Thefollowingprocedureshalrandomfromthesmallestcontainer.Iftenleasmallestcontainer,allwhentheleadisbroken,andcalculateF:load(averageoftensamplesorallsamplquantityinthel:distance(mm)betweensperformancevaluebasedonTable7)d:leaddiameter(averageoftensamplesifthequantityinthe2)ConditioningofsampleConditionthestemperatureof23℃±2℃for6horlonger,andfromthedesiccator.Thetestshallbecarried±2℃andthehumidityof(65±5)%.3)Testmethod,in7ShapeoftopsforapplyNotea)Theshapeofthetops(radiusR)forapplybesuchthatR=(0.2±0.02)mThesampleforthehardnesThetestforwritingdensity(hereafterreferredtoasdensity)ofblackleadsshallbeperformedaccordingtothefollowingprocedureusingHa)Conditioningofthermohygrostaticchab)LinedrawingUsingaline-drawingdevice4)eitherofrecordingtype(MethodA)Note4)Examplesofline-drawingdeviceofMethoddrawingwidth,eitheratfourpositionsinthecaseoforatthreepositionsinthe8d)DensitycalculationWhenusingthespectrculatedusingFormula(2)and,inthecaseofapparatuscapableofmeasuringISOvisualdensity,itshallbeDR(thedensityofline-drawingpapeofmeasurementsatfourpoints(inthecaseofMethodA)oratthreepoints(inthecaseofMethodB)ofindividualsamplesshallbeobtained.Theaveragesofallsamplestestedshallbefurtheraveragedtoberecord……p:reflectance(thereflectanceofline-drawingpapershallbeconductedbycfthehandwritingmadeonthesamepaperwiththesamepenpressure.CwritingtestonleadsofthesamebrandastheHBlehardnessdegrees.Conductavisual/sensorycomparisonPROTECTEDBY9A:Recordingtype23222markingdiameter2mm;sDR(SA:sv)],oroneequivalentorsuperiortothisinprecisionPROTECTEDBYCOPYRIGPROTECTEDBYCOPYRIGFigure2MeasuringpositionsofFigure3MeasuringpositionsofdensitywithspiraltyThehydrochloricacidsolutionusedformeusingthehydrochloricacidspecifiedinJISK8180.ForaciditymeasurmeterspecifiedinJISZ8802Measurementofharmfulsubstancesshallbemade1)Cutthesampleinlength,andwe2)Inaproperly-sizedcovolumeofhydrochloricacidextractionsolution.3)ChecktheacidityofthemixturewithapHmeterandifthepHisgreaterthan1.5,addbydrops,whileshakingthemixture,24)Makingsurethatthemixturtureusingamembranefilterwithaporesizeof0.45μfnecessary,centrifugeat49000m/s2orun6)Analysetheobtainedsolutib)Testprocedureforsamplesco2)Wrapthetestportionwithhardenedfilterpaper,removegrponentofthesimilarmaterialsthroughsolventextractionusinganappropriatesolvent.Inthiscase,useanorthecomponentofthesimilarmaterialscanbe3)Maceratethetestportionremainingonthehardenedfilterpaperwithofthetestportionobtainedin1)andmixbystirringuntilhomogtitativelytransferthemixturetotheproperly-sizedcontainer?).Addtothemix-4)ExaminetheacidityofthemixturewithapHmeterandifthepHisgreaterthantureusingamembranefilterwithaporesizeof0.45μmfnecessary,centrifugeat49000m/s2orun7)Analysetheobtainedsolutionbytheatotivelycoupledplasmaatomicemissionspectromc)Theresultoftwhere,PB:correctedvaPB?:analysisresuPB2:correctionvaluThefollowingprocedureshallba)PreparationoftestpaperOnadrawingpabrightness75%orgreater),holdingthesampleleadinhastrokesofthesampleleadinhorizontalandverticaldirectionsfaceisevenlycovered.Thisprocedureshallbeperfoorothermateriallaidunderthepaper.Thegrammageandbrightnesstestsofthedrawingpapershallbeinaccob)ExposureExposethetestpaperpreparedininJISL0841,JISL0842orJISL0843.CarryinJISL0841untilGrade2ofbluescaltionofexposureinthecaseofusingthemethodsinJISL0842andJISL0843shallbeblackpaneltemperatureof37℃±5℃andrc)AssessmentAssessthedegreeofchangeincolouroftheexposedtestpaperusingthegreyscalefoUsingthemicrometerspecifiedinJISB7502oraccuracyequalorsuperiortheretrandom,andreporttheaverageofthethreemeasurements.MeasurethelengthbyusingtheverniercallipersspecifiedinJISB75thereto.TheblackleadsandcolourleadsshaeryinspectionconsistingofmentsinClauses6andintoproduction,productsshallalsoundergotypeinspectionwheneveraofmaterialhasbeenadopted,thetypeofmaterialusedhasbeenchanged(iingingredientssuchaspigments),orproductioncmaterialshavebeenchanged.TheproductsNote6)Aninspectiontojudgewhetherthequalityofapb)Deliveryinspection?ThoNote7Aninspectionperformedesignandmanufacturetothosealreadyacceptedinthetytojudgewhetheritsatisfiestherequiredwiththefollowinginformation.Themarkingitemsa)andb)areomitted.Themarkingshalland,ifpossible,ontheleads.Forthoseleadswhichpassdirectlyintob)NumberofthisStandardf)Numberofleadscontaig)Manufacturer'snameoritsabbExampleForblackleadsmanufacturedbyO△□diameter0.5mm,hardnessdegreeHB,length60mm,andtBlackleadsJISS6005-0.5-HB60mwiththefollowinginformation.Themarkingitema)isoptForthoseleadswhichpassa)NumberofthisStandardb)ColournamegiveninClause5indicatede)Numberofleadscontaif)Manufacturer'snameoritsabExampleForcolourleadsmanufacturedbyO△□(companyname)withmarkingdiameter0.7mm,length60mm,andtExampleofline-drawingdeviceFigureJA.1Exampleofrecordingtypeline-drawingFigureJA.2Exampleofspiraltypeline-drawLtd