1、A Referencenumbe r ISO12650:1999 (E) INTERNATIONAL STANDARD ISO 12650 Firstedition 19990615 Documentimagingapplications Microfilmingofachromaticmapson35mm microfilm ApplicationsenimageriedocumentaireMicrofilmagedescartes achromatiquessurmicrofilmde35mmISO12650:1999(E) ISO1999 Allrightsreserved.Unles
2、sotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyan ymeans,electronic ormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromthepublisher. InternationalOrganizationforStandardization Casepostale56 CH1211Genve20 Switzerland Internet isoiso.ch Prin
3、tedinSwitzerland ii Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteeha
4、sbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnongovernmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. DraftInternationalStan
5、dardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. InternationalStandardISO 12650,waspreparedbyTechnicalCommitteeISO/TC 171, Documentimaging applications,SubcommitteeSC2, Applicat
6、ionsissues .ISO ISO12650:1999(E) iii Introduction ThisInternationalStandardhasbeenpreparedtohelpmicrofilmersofmaps.ItsupplementsISO32721,ISO32722 andISO32723,whichapplytotechnicaldrawingsaswellastomaps.However,reductionratiosfortechnical drawingscanbeunsuitableformapsbecausemapsoftenhavethinnerlines
7、andsmallerdetailsthanthosespecified fortechnicaldrawings.INTERNATIONALSTANDARD ISO ISO12650:1999(E) 1 DocumentimagingapplicationsMicrofilmingofachromatic mapson35mmmicrofilm 1Scope ThisInternationalStandardspecifiesspecialrequirementsforrecordingachromaticmapson35mmmicrofilminthe formofrollsorapertu
8、recards. 2Normative references Thefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthis InternationalStandard.Atthetimeofpublication,theeditionsindicatedwerevalid.Allstandardsaresubjectto revision,andpartiestoagreementsbasedonthisInternationalStandardareencou
9、ragedtoinvestigatethe possibilityofapplyingthemostrecenteditionsofthestandardsindicatedbelow.MembersofIECandISOmaintain registersofcurrentlyvalidInternationalStandards. ISO446:1991, MicrographicsISOcharacterandISOtestchartNo.1Descriptionanduse. ISO32721:1983, Microfilmingoftechnicaldrawingsandotherd
10、rawingofficedocumentsPart1:Operating procedures. ISO32722:1994, MicrofilmingoftechnicaldrawingsandotherdrawingofficedocumentsPart2:Qualitycriteria andcontrolof35mmsilvergelatinmicrofilms. ISO32723: 1) , MicrofilmingoftechnicaldrawingsandotherdrawingofficedocumentsPart3:Unitizedaperture cardfor35mmmi
11、crofilm. ISO32724:1994, MicrofilmingoftechnicaldrawingsandotherdrawingofficedocumentsPart4:Microfilmingof drawingsofspecialandexceptionalelongatedsizes. ISO3334:1989, MicrographicsISOresolutiontestchartNo.2Descriptionanduse. ISO61961:1993, MicrographicsVocabularyPart1:Generalterms. ISO61962:1993, Mi
12、crographicsVocabularyPart2:Imagepositionsandmethodsofrecording. ISO61963:1997, MicrographicsVocabularyPart3:Filmprocessing. ISO61964:1987, MicrographicsVocabularyPart4:Materialsandpackaging. ISO61965:1987, MicrographicsVocabularyPart5:Qualityofimages,legibility,inspection. ISO61966:1992, Micrographi
13、csVocabularyPart6:Equipment. ISO61967:1992, MicrographicsVocabularyPart7:Computermicrographics. ISO61968:1998, MicrographicsVocabularyPart8:Use. ISO6199:1991, MicrographicsMicrofilmingofdocumentson16mmand35mmsilvergelatintypemicrofilm Operatingprocedures. 1)Tobepublished.(RevisionofISO32723:1975)ISO
14、12650:1999(E) ISO 2 3 Termsanddefinitions ForthepurposesofthisInternationalStandard,thetermsanddefinitionsgiveninISO6196andthefollowingapply. 3.1 achromaticmap maphavingawhiteornearwhitebaseonwhichinformationisprintedusingaspectrallyneutralmedium 4General requirements 4.1Roll microfilm Mapsshallbere
15、cordedon35mmrollmicrofilminaccordancewithISO32722requirementsformattersnot specifiedinthisstandard. 4.2Quality ThequalityofsilvergelatintypefilmsshallcomplywithISO32722requirementsformattersnotspecifiedinthis standard. 4.3Aperture cards AperturecardsshallcomplywithISO32723. 5Reduction 5.1Reduction r
16、atios Thenominalreductionratioshallbe1:24;1:21,2;1:15;1:10;or1:7,5.Thereductionratioselectedshallnormally bethelowestthatwillwhollyaccommodatethemapinaframeof35mmmicrofilm.Toensurelegibility,theoptical classofcharactersandqualityindexdescribedinISO6199shouldbetakenintoaccountwhenselectingreduction r
17、atios. 5.2Resolution ToensurethatallinformationcanberecordedwhentestedinaccordancewithISO32722,thequalityofall processedmicrofilmshallbesuchthattheISOcharactersizesorthepatternnumbersshowninTable1forthe appropriategenerationandreductionratiosshallberesolved. Table1Resolutionrequirements Reduction ra
18、tio ISOtestchart1 charactersize mm/100 ISOtestchart2 patternnumber 1st generation 2nd generation Distribution 1st generation 2nd generation Distribution 1:24 80 90 100 5,0 4,5 4,0 1:21,2 71 80 90 5,6 5,0 4,5 1:15 56 63 70 7,1 6,3 5,6 1:10 45 56 63 8,9 7,9 7,1 1:7,5 45 56 63 10,0 8,9 7,9ISO ISO12650:
19、1999(E) 3 6Test target Atthestartoftheroll,thetesttarget(seeFigure1)shallbemicrofilmedonceatthelowestreductionratiousedfor example,at1:15or1:16for35mmfilm.Attheendoftheroll,thetesttargetshallbemicrofilmedonceforeach reductionratiousedoreachtimethereductionratioischanged. Thetesttargetshallcompriseth
20、efollowingfeatures,arrangedasshowninFigure1: ISOtestchartsofthesametype; centremarkingsandsheetsizemarkingsfor3reductionscales; areflectancetarget;thatis,agrey,spectrallyneutral,mattfinishedpatchatleast150mm150mmwitha reflectancewithintherange50%3%andadark,spectrallyneutral,mattfinishedpatchwitharef
21、lectance withintherange6%0,4%; areductionratioteststripthatcontrastssufficientlywiththebackgroundsothatthelengthoftheimage recordedonthemicrofilmcanbemeasuredeasilyandthatis10timesaslong,inmillimetres,asthereduction used; anidentificationcardplacedonaclearspaceonthetesttargetandmicrofilmedatthestart
22、oftheroll; atesttargetforeachreductionratioorforseveralreductionratioscombined; asymmetrical,orthogonalgridofcrossesmarkingsubdivisionoftheareaintosquaresof100mminaside. Thecentresofthecrossesshallrepresentthereferencepointlocations.Thepositionofareferencepointwith respecttotheneighbouringreferencep
23、ointsshallnotdifferfromthenominalvaluebymorethan0,1%. Furthermore,theentiregridshallnotdifferbymorethan0,5%inanydirectionfromthenominalsize. Thetesttargetshallbeexposedsothatthedensityofthegreypatch(50%reflectance)isbetween1,0and1,2. Eachofthefiveresolutiontestchartsoneachframeshallbeexaminedunderam
24、icroscope.WhenISOtestchart1 isused(seeISO446),themagnificationofthemicroscopeshallbebetween50:1and60:1.WhenISOtestchart2 isused(seeISO3334),themagnificationshallbebetween0,5and1timesthenumberoflinepairspermillimetreto beresolved.ISO12650:1999(E) ISO 4 Figure1TesttargetISO12650:1999(E) ISO ICS37.080 Pricebasedon4pages
