1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 3272-6:2000 ICS 37
2、.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Microfilming of technical drawings and other drawing office documents Part 6: Quality criteria and control of systems for enlargement from 35mm microfilmThis British Standard, having been prepared under the direction of the
3、DISC Board, was published under the authority of the Standards Committee and comes into effect on 15 September 2000 BSI 09-2000 ISBN 0 580 36366 X BS ISO 3272-6:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard reproduces verbatim ISO 3272-6:2000
4、 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee IDT/1, Document imaging applications, to Subcommittee IDT/1/2, Application issues, which has the responsibility to: aid enquirers to understand the text; present to the respon
5、sible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on
6、request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility
7、of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations
8、. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 4, an inside back cover and a back cover. The BSI copyright notice displayed throughout this document indicates when the document was last issued.Referencenumb
9、er ISO3272-6:2000(E) INTERNATIONAL STANDARD ISO 3272-6 Firstedition 2000-03-15 Microfilmingoftechnicaldrawingsand otherdrawingofficedocuments Part6: Qualitycriteriaandcontrolofsystemsfor enlargementsfrom35mmmicrofilm Micrographie des dessins techniques et autres documents de bureau dtudes Partie 6:
10、Critres et contrle de qualit des systmes pour lagrandissement de microfilm de 35 mmISO3272-6:2000(E) ii ISO3272-6:2000(E)iii Contents Page Foreword.iv Introduction.v 1 Scope1 2 Normativereferences1 3 Termsanddefinitions.2 4 Enlargementratios2 5 Legibility.2 AnnexA(informative)Readabilityofaprintfrom
11、amicrofilmedengineeringdocument.3 Bibliography4ISO3272-6:2000(E) iv Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyi
12、nterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectr
13、otechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiesca
14、stingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthispartofISO3272maybethesubjectofpatent rights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardISO3272-6waspreparedbyTechnicalCommitteeISO/TC171, Document imaging applications, Subcommittee S
15、C 2, Application issues. ISO3272consistsofthefollowingparts,underthegeneraltitle Microfilming of technical drawings and other drawing office documents: Part 1: Operating procedures Part 2: Quality criteria and control of 35 mm silver gelatin microfilms Part 3: Unitized aperture card for 35 mm microf
16、ilm Part 4: Microfilming of drawings of special and exceptional elongated sizes Part 5: Test procedures for diazo duplicating of microfilm images in aperture cards Part 6: Quality criteria and control of systems for enlargements from 35 mm microfilm AnnexAofthispartofISO3272isforinformationonly.ISO3
17、272-6:2000(E)v Introduction ThispartofISO3272givesguidanceonmethodsofproducingenlargementsfrommicrofilminaccordancewith ISO3272-1.INTERNATIONALSTANDARD ISO3272-6:2000(E)1 Microfilmingoftechnicaldrawingsandotherdrawingoffice documents Part6: Qualitycriteriaandcontrolofsystemsforenlargementsfrom 35mmm
18、icrofilm 1 Scope ThispartofISO3272specifiesproceduresforcheckingminimumlegibilityrequirementsandthequalityofthe systemandhard-copyenlargements. 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsof thispartofISO3272.Fordatedrefer
19、ences,subsequentamendmentsto,orrevisionsof,anyofthesepublications donotapply.However,partiestoagreementsbasedonthispartofISO3272areencouragedtoinvestigatethe possibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.Forundated references,thelatesteditionofthenormativedocumentre
20、ferredtoapplies.MembersofISOandIECmaintain registersofcurrentlyvalidInternationalStandards. ISO446:1991, Micrographics ISO character and ISO test chart No. 1 Description and use. ISO3272-1:1983, Microfilming of technical drawings and other drawings office documents Part 1: Operating procedures. ISO3
21、272-2:1994, Microfilming of technical drawings and other drawing office documents Part 2: Quality criteria and control of 35 mm silver gelatin microfilms. ISO3334:1989, Micrographics ISO resolution test chart No. 2 Description and use. ISO6196-1:1993, Micrographics Vocabulary Part 1: General terms.
22、ISO6196-2:1993, Micrographics Vocabulary Part 2: Image positions and methods of recording. ISO6196-3:1997, Micrographics Vocabulary Part 3: Film processing. ISO6196-4:1998, Micrographics Vocabulary Part 4: Materials and packaging. ISO6196-5:1987, Micrographics Vocabulary Part 5: Quality of images, l
23、egibility, inspection. ISO6196-6:1992, Micrographics Vocabulary Part 6: Equipment. ISO6196-7:1992, Micrographics Vocabulary Part 7: Computer micrographics.ISO3272-6:2000(E) 2 3 Termsanddefinitions ForthepurposesofthispartofISO3272,thetermsanddefinitionsgiveninISO6196apply. 4 Enlargementratios Enlarg
24、ementsshallbemadeatoneoftheratiosspecifiedinISO3272-1. Forcontinuousenlargement,the enlargementratiothatgivesthelargestcopycontainablewithinthewidthoftherollofcopymaterialshallbeused. 5 Legibility ThelegibilityofanenlargementmadefromatestnegativethatcomplieswithISO3272-2shouldbesuchthatthe ISONo.1te
25、stcharacterorISONo.2testpatterngiveninTable1or2isresolved.Thepositionofthecentrelines shouldbecheckedandanydeviationfromthehorizontalorverticalnoted. Fortestingthelegibility,opticalinstruments(forinstancemagnifyingglasses)canbeused. Becausethelegibilityofthemicrofilmdepends,amongotherthings,onthered
26、uctionratio,thequalityofthe enlargementisalsodeterminedbythereductionratio.Tables1and2showthevaluesofthetestpatternsor charactersthataccordingtoISO446andISO3334mustbelegibledependingonthereductionratio. Table1ISONo.1testcharacterstobereadatenlargementratios ISONo.1testcharacterstobereadatenlargement
27、ratios Reductionratio (7,5/1) (10,5/1) 15/1 21/1 30/1 (1:7,5) 100 80 63 56 50 (1:10,5) 125 100 80 71 63 1:15 140 125 112 100 80 1:21 180 160 140 125 112 1:30 250 225 180 160 140 NOTE ThevaluesshowninbracketsarenotgiveninISO3272-1butareincludedhereforinformation. Table2ISONo.2testcharacterstobereadat
28、enlargementratios ISONo.2testcharacterstobereadatenlargementratios Reductionratio (7,5/1) (10,5/1) 15/1 21/1 30/1 (1:7,5) 4,0 5,0 6,3 7,1 8,0 (1:10,5) 3,2 4,0 5,0 5,6 6,3 1:15 2,8 3,2 3,6 4,0 5,0 1:21 2,2 2,5 2,8 3,2 3,6 1:30 1,6 1,8 2,2 2,5 2,8 NOTE ThevaluesshowninbracketsarenotgiveninISO3272-1but
29、areincludedhereforinformation.ISO3272-6:2000(E)3 AnnexA (informative) Readabilityofaprintfromamicrofilmedengineeringdocument Thereadabilityofaprintfromamicrofilmedengineeringdocumentdependsonfivefactors: sizeofthelettering; shapeofthelettering; spacingofeachletter; sharpnessorresolution; contrast. I
30、SO3098-1specifiesthesize,shape,andspacingforlettering.WhenadrawingconformstoISO3098-1,the readabilityisthendeterminedbyacombinationofresolutionandcontrast.Whenresolutionanddensityarehigh, thereadabilityishigh.Whenbotharelow,thereadabilityispoor.Highresolutionandlowcontrastalsoproduces printsofpoorre
31、adability.ThispartofISO3272onlyaddressesthemeasurementofresolution.Contrastmustalso betakenintoconsiderationwhenjudgingthequalityofaprint.Thefinalcriterionofreadabilityis:doestheprint satisfytheusersneed?ISO3272-6:2000(E) 4 Bibliography 1 ISO3098-1:1974, Technical drawings Lettering Part 1: Currentl
32、y used characters. 2 ISO3272-4:1994, Microfilming of technical drawings and other drawing office documents Part 4: Microfilming of drawings of special and exceptional elongated sizes. 3 ISO6196-8:1998, Micrographics Vocabulary Part 8: Use.BS ISO 3272-6:2000 BSI 389 Chiswick High Road London W4 4AL |
33、 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the in
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