1、BRITISH STANDARD BS ISO 10550:1994 Implementation of ISO 10550:1994 Micrographics Planetary camera systems Test target for checking performance ICS 37.080.00BSISO 10550:1994 This British Standard, having been prepared under the directionof the Information andDocumentation Standards Policy Committee,
2、 was publishedunder the authority ofthe Standards Board and comesintoeffect on 15June1994 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference DOT/16 Draft for comments 90/96193 DC ISBN 0 580 23154 2 Committees responsible for this British Standard The pr
3、eparation of this British Standard was entrusted by the Information and Documentation Standards Policy Committee (DOT/-) to Technical Committee DOT/16, upon which the following bodies were represented: British Computer Society British Library British Office Technology Manufacturers Alliance British
4、Photographic Association Cranfield Imaging and Document Management User Group Her Majestys Stationery Office KODAK Limited Library Association London Borough of Bromley National Centre for Information Media and Technology (Cimtech) United Kingdom Association for Information and Image Management The
5、following body was also represented in the drafting of the standard, through subcommittees and panels: Public Record Office Amendments issued since publication Amd. No. Date CommentsBSISO 10550:1994 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword i
6、ii Text of ISO 10550 1BSISO 10550:1994 ii BSI 12-1999 National foreword This British Standard reproduces verbatim ISO10550:1994 and implements it as the UK national standard. This British Standard is published under the direction of the Information Documentation Standards Policy Committee whose Tech
7、nical Committee DOT/16 has the responsibility to: aid enquirers to understand the text; present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate
8、them in the UK. NOTEInternational and European Standards, as well as overseas standards, are available from Customer Services, Publications, BSI, Linford Wood, Milton Keynes, MK146LE. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standard
9、s 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 inside front cover, pagesi andii, theISO title page, pagesii toiv, pages1 to4 and a back cover. Th
10、is standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.ISO 10550:1994(E) ii BSI 12-1999 Contents Page Foreword iii 1 Scope 1 2 Normative references 1 3 Creation and description of the test ta
11、rget 1 4 Methods 2 Annex A (informative) Examples of different types of original documents 4 Figure 1 Test target 2 Descriptors: Micrographics, reproduction (document), microforms, microfilm, image quality indicators, mire, performance evaluation.ISO 10550:1994(E) BSI 12-1999 iii Foreword ISO (the I
12、nternational Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISOtechnical committees. Each member body interested in a subject for which a technical committee h
13、as been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISOcollaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical
14、standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least75% of the member bodies casting a vote. International Standard ISO10550 was prepared by Technical
15、Committee ISO/TC171, Micrographics and optical memories for document and image recording, storage and use. Annex A of this International Standard is for information only.iv blankISO 10550:1994(E) BSI 12-1999 1 1 Scope This International Standard describes a test target for use in checking the perfor
16、mance of planetary camera systems. It specifies methods for a) checking the performance of the system; b) monitoring cameras in routine use. It applies to systems used to produce first-generation microforms that comply with ISO3272-1, ISO3272-2, ISO6199 or ISO9923. It does not apply to the productio
17、n of duplicates or hard copy. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parti
18、es to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 5-2:1991, Photography Density measureme
19、nts Part2: Geometric conditions for transmission density. ISO 5-3:1984, Photography Density measurements Part3: Spectral conditions. ISO 5-4:1983, Photography Density measurements Part4: Geometric conditions for reflection density. ISO 446:1991, Micrographics ISO character and ISO test chart No. 1 D
20、escription and use. ISO 2469:1977, Paper, board and pulps Measurement of diffuse reflectance factor. ISO 3272-1:1983, Microfilming of technical drawings and other drawing office documents Part1: Operating procedures. ISO 3272-2:1994, Microfilming of technical drawings and other drawing office docume
21、nts Part2: Quality criteria and control of35mm silver gelatin microfilms. ISO 3334:1989, Micrographics ISO resolution test chart No. 2 Description and use. ISO 6199:1991, Micrographics Microfilming of documents on16mm and35mm silver-gelatin type microfilm Operating procedures. ISO 9923:, Micrographi
22、cs TransparentA6 microfiche image arrangements 1) . 3 Creation and description of the test target 3.1 General The test target shall be adapted to the microfilming application used; it shall comprise the features described hereafter arranged as shown onFigure 1. The dimensions shall be in accordance
23、with the maximum size of the document that can be microfilmed with a given system at a given reduction ratio. ISO test charts No. 1 shall comply with ISO446 and ISO test charts No.2 shall comply with ISO3334. 3.2 Test target for reflected light exposure The test target shall be on an opaque base hav
24、ing a maximum reflection density of0,12 or having a minimum reflectance of75%. It shall comprise the following features: 3.2.1 five test charts (ISO No. 1 or ISO No. 2) located as follows: one at the centre of the test target and one on each of the half-diagonals, at a distance from the corner equal
25、 to10% of the length of the diagonal; 3.2.2 an indication of the reduction ratio used for filming the test target; 3.2.3 at least two of the density measuring patches listed below, each large enough to generate an area not less than2mm 2mm on the microimage: a spectrally neutral matt black patch wit
26、h a reflection density within the range1,25 to1,19 (reflectance within the range5,6 to6,4%), for all applications; a spectrally neutral matt grey patch with a reflection density within the range0,33 to0,28 (reflectance within the range47% to53%), for technical drawings; a spectrally neutral matt whi
27、te patch with a reflection density within the range of0,10 to0,07 (reflectance within the range80% to85%), for source documents; 3.2.4 a graduated metric scale, as long as the space available on the test target allows, of a width and contrast that permits easy measurement of the length of its microi
28、mage; 3.2.5 if necessary, lines, to check for possible optical distortions. All reflection density measurements shall be made in accordance with ISO5-3 and ISO5-4 and all reflectance measurements shall be made in accordance with ISO2469. 1) To be published.ISO 10550:1994(E) 2 BSI 12-1999 3.3 Test ta
29、rget for transmitted light exposure The transparent test target shall be on a spectrally neutral base having a maximum transmission density of0,12 or having a minimum transmittance of75%. It shall comprise the following features: 3.3.1 five test charts (ISO No. 1 or ISO No. 2), one located at the ce
30、ntre of the test target and one on each of the half-diagonals, at a distance from the corner equal to10% of the length of the diagonal; 3.3.2 an indication of the reduction ratio used for filming the transparent test target; 3.3.3 at least two of the density measuring patches listed below, each larg
31、e enough to generate an area not less than2mm 2mm on the microimage: a spectrally neutral black area with a transmission density within the range1,25 to1,19 (transmittance within the range5,6% to6,4%), for all applications; a spectrally neutral grey area with a transmission density within the range0
32、,33 to0,28 (transmittance within the range47% to53%), for technical drawings; a spectrally neutral clear area with a transmission density within the range of0,10 to0,07 (transmittance within the range80% to85%), for source documents; 3.3.4 graduated metric scale, as long as the space available on th
33、e transparent test target allows, of a width and contrast that permits easy measurement of the length of its microimage; 3.3.5 if necessary, lines, to check for possible optical distortions. All transmission density measurement shall be made in accordance with ISO5-2 and ISO5-3. 4 Methods 4.1 Method
34、 for checking the system Film the test target as specified in the appropriate International Standard, at each reduction ratio available, exposed so that density of the image of the grey test patch is1 0,1. Using a densitometer, check the density of the image of the nominated area. Measure the densit
35、y of the image of the black patch to check minimum density on the microform. To check legibility, evaluate the images of the test charts in accordance with ISO446 or ISO3334. Figure 1 Test targetISO 10550:1994(E) BSI 12-1999 3 4.2 Method for monitoring cameras in routine use Film the test target as
36、specified in the appropriate International Standard, in the image frame allocated to it, at each reduction ratio to be used for filming documents, though not necessarily at the exposure the documents would require. Using a densitometer, check the density of the image of the grey area. Measure the de
37、nsity of the image of the black patch to check minimum density. To check legibility, evaluate the images of the test charts in accordance with ISO446 or ISO3334.ISO 10550:1994(E) 4 BSI 12-1999 Annex A (informative) Examples of different types of original documents A.1 Documents to be microfilmed by
38、reflected light All the documents and drawings, except those described in the last paragraph ofA.2, which are intended to be read by reflected light. A.2 Documents to be microfilmed by transmitted light Documents to be microfilmed by transmitted light are, for example, the following: explanation pri
39、nted on a translucent or transparent base to be read together with the underlaid figure or drawing, as those used in a medical or a geological book; transparency for overhead projectors; exposed and developed radiographic film intended to be used for medical diagnosis; drawing on a translucent or tr
40、ansparent base, intended to be read by transmitted light.blankBS ISO 10550:1994 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the internati
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