BS ISO 6200-2000 en_2147 Micrographics - First generation silver-gelatin microforms of source documents - Density specifications and method of measurement《缩微摄影.源文件的第1代银明胶型缩微制品.密度规范和检测方法》.pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 6200:1999 ICS 37.0

2、80 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Micrographics First generation silver-gelatin microforms of source documents Density specifications and method of measurementThis British Standard, having been prepared under the direction of the DISC Board, was published unde

3、r the authority of the Standards Committee and comes into effect on 15 March 2000 BSI 03-2000 ISBN 0 580 34291 3 BS ISO 6200:1999 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard reproduces verbatim ISO 6200:1999 and implements it as the UK national

4、standard. The UK participation in its preparation was entrusted by Technical Committee IDT/1, Document imaging applications, to Subcommittee IDT/1/1, Quality, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquir

5、ies 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 request to its secretary. Cross-references The Br

6、itish Standards which implement international 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 of the BSI Standards Electronic Catalogue. A British Standard

7、 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. Summary of pages This document comprises a front cover, an

8、inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 and 2, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.A Referencenumbe r ISO6200:1999 (E) INTERNATIONAL STANDARD ISO 6200 Thirdediti

9、on 19991015 MicrographicsFirstgeneration silvergelatinmicroformsofsource documentsDensityspecificationsand methodofmeasurement MicrographieMicroformesdocumentairesglatinoargentiquesde premiregnrationSpcificationsdesdensitsetmthodede mesurageISO6200:1999(E) ii Foreword ISO (the InternationalOrganizat

10、ionforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee

11、.Internationalorganizations,governmentalandnongovernmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirecti

12、ves,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtoth ememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. InternationalStandardISO 6200waspreparedbyTechnicalCommitteeISO/TC 171,Documentimaging applica

13、tions,SubcommitteeSC1, Quantificationofqualitylevelsandcontrolprocedures. Thisthirdeditioncancelsandreplacesthesecondedition(ISO6200:1990)whichhasbeentechnicallyrevised. ISO6200:1999(E) iii Introduction Microformsshouldbeofsuchqualit ythatthein formationcontainedisclearlylegible,andsuitableforitsint

14、ended use.Itisthereforeimportantthatdocumentsformicrofilmingconformtomicrofilmingcriteria. Controllingmicroimagedensityhelpstoensurethatgoodresultsareobtained.INTERNATIONALSTANDARD ISO6200:1999(E) 1 MicrographicsFirstgenerationsilvergelatinmicroformsof sourcedocumentsDensityspecificationsandmethodof

15、 measurement 1Scope ThisInternationalStandardspecifiesamethodformeasuringdensitieso ffirstgenerationsilvergelati nmicroforms. Itspecifiesdensityvaluesfordifferentqualitiesofdocuments. Itappliestosourcedocumentnegativeappearingmicroforms. Itdoesnotapplytomicroformsfortechnicaldrawingswhicharedealtwit

16、hinISO32722,or to diazo and vesicular filmswhicharethesubjectofISO8126,ortoCOMmicroformswhicharedealtwithinISO8514. 2Normativereferences The following normativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsof thisInternationalStandard.Fordatedreferences,subsequentame

17、ndmentsto,orrevisionsof ,anyofthese publications do not apply. However, partiestoagreementsbasedonthisInternationalStandardareencouragedto investigatethepossibilityofapplyingthemostrecenteditionsofth enormativedocumentsindicatedbelow.For undatedreferences,thelatesteditionofthenormativedocumentreferr

18、edtoapplies.MembersofISOandIEC maintainregistersofcurrentlyvalidInternationalStandards. ISO51:1984, PhotographyDensitymeasurementsPart1:Terms,symbolsandnotations . ISO52:1991, PhotographyDensitymeasurementsPart2:Geometricconditionsfortransmissiondensity . ISO53:1995, PhotographyDensityMeasurementsPa

19、rt3:Spectralconditions . ISO61961:1993, MicrographicsVocabularyPart1:Generalterms . ISO61964:1998, MicrographicsVocabularyPart4:Materialsandpackaging. ISO61965:1987, MicrographicsVocabularyPart5:Qualityofimages,legibility,inspection. ISO61966:1992, MicrographicsVocabularyPart6:Equipment. 3Termsandde

20、finitions ForthepurposesofthisInternationalStandard,thetermsanddefinitionsgiveninISO51andISO6196apply. 4Methodofmeasurement DensityshallbemeasuredwithadensitometerinconformancewiththerequirementsofISO52andISO53for measurementofISOstandarddiffusevisualdensityandhavinganapertureofdiameter0,5mmto3,0mm.

21、ISO6200:1999(E) 2 Eachareameasuredshouldbeofevendensityandcompletelycovertheapertureo fthedensitometer.Atarget areacanbeprovided forthispurposewhen making firstgeneration microforms. The emulsionsurfaceshallfacethe collectingheadofthedensitometerwhichisusuallyoppositeoftheilluminationlamp. Densityis

22、usuallymeasuredonsampleimages.Ifdensitydoesnotappearvisuallyto beuniformwithinanimage , it isrecommendedthatfurthermeasurementsbemadeatdifferentplaceswithintheimage. 5Densityspecifications BackgrounddensityshallbeasspecifiedinTable1. AllvaluesspecifiedareISOstandardvisualdiffusedensities.Thebackgrou

23、nddensitiesgiveninTable1are densitiesabovebaseplusfog.Therefore,foralldensityreadings,thevalueofbaseplusfogshallb esubtractedto enablecomparisonwiththedensityrequirementsspecifiedinTable1. Thebaseplusfogdensityformicroformswithclearbaseshallbenotgreaterthan0,10. Somesilvergelatinmicroformshaveatinte

24、dbase(greybaseforexample) .Thebaseplusfogdensityforthese filmsisoftenhigherthan0,10duetothehigherdensityofthebase.Wher eappropriate,specificrecommendations fromthefilmmanufacturershouldbefollowedforbackgrounddensity. Documentswhichcontainfinelinedetails,orcomplexcharacterssuchasChineseandJapanese,ma

25、yrequire lowerbackgrounddensityvaluesthanthosespecifiedinTable1,withalowerlimitof0,70. Whenthecontentofadocumenthasareasofdifferentqualities,thedensity to be achieved shall be dictated by the lowestquality. Table1Backgrounddensities Document Group DocumentDescri ption Background density 1 Denseblack

26、wellformedcharactersandlinesofhigheffective contrast. 1,00to1,50 a 2 Group1documentswithfinelines,ordocumentswit hlower densityprintormediumeffectivecontrast,typica lofgeneral commercialdocuments. 0,90to1,10 3 Loweffectivecontrastdocuments. 0,80to1,00 b 4 Veryloweffectivecontrastdocuments. 0,70to0,8

27、5 b NOTE Whenfil mingasetofveryunifor mhighqualitydocu mentsabackgrounddensityofu p to 1,50 is allowable, howeveramaximumrangeof0,20withinagroupofimagesshouldbemaintained. a Whenfilmingdoublesideddocu mentswithnoticableshowthrough,densities maybereducedtoreducei mage showthrough. b 1:24reductionorle

28、ssrecommended.BS ISO 6200:1999 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

29、| | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by

30、 amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Stand

31、ard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest e

32、ditions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those

33、that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services

34、are also available which give details on all its products and services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details

35、 of these and other benefits contact Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyri

36、ght, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the s

37、tandard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070.

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