【英文标准名称】:StandardTestMethodforMeasurementofComparativeLegibilitybyMeansofPolarizingFilterInstrumentation
【原文标准名称】:用偏振滤光仪测量相对清晰度的标准试验方法
【标准号】:ASTMD7298-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D10.32
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:过滤器;仪器装置;清晰度;测量;试验
【英文主题词】:analyzer;label;legibility;legibilityindex;lightlevel;polarizer;test
【摘要】:Thistestmethodassistsinevaluatingtheeffectoflayout,typeface,typesize,color,andbackgroundonthelegibilityofprintedmatter.Previousresearch3hasshownthatresultsaremoresignificantlyimpactedbysubjectagethananyothereffect.Oldersubjectstendtorequiremorelightwhenusingthisinstrument.Becausesubjectsageatdifferentratesasaresultoflifestyleandgenetics,variabilityofdatatendstoincreasewithincreasingage.Thistestmethodwasdevelopedusingsubjectsofages19to28years.Itisadvisedthatsubjectsage19to28beusedincaseswherevariabilityneedstobekepttoaminimum.Testerscancomparelegibilitybetweenvariousgroupsofsubjects(byage,lightintensity,distance,visioncharacteristicsofthesubjects)andoneagainstotherlabelconfigurationswithingroupsofsubjects1.1Thistestmethodprovidesanobjectivemeanstocomparativelymeasuretheeaseofreadingprintedmatterforuseinpackagelabeling.1.2Thistestmethodisnotintendedtoquantifythelegibilityofaprinteditemagainstastandardbuttocompareitslegibilityagainstotheritems.1.3Thistestmethoduseshumansubjectstoviewprintedmattermountedinaspecializedinstrument.1.4Theuserofthistestmethodmustbeawarethatresultsmaydifferfromoneagegroupofsubjectstoanother.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C65
【国际标准分类号】:13_100
【页数】:5P.;A4
【正文语种】: