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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 8514-1:2000 ICS 37
2、.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Micrographics Alphanumeric computer output microforms Quality control Part 1: Characteristics of the test slide and test data Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy,
3、 (c) BSI This British Standard, having been prepared under the direction of the DISC Board, was published under the authority of the Standards Committee and comes into effect on 15 August 2000 BSI 08-2000 ISBN 0 580 36364 3 BS ISO 8514-1:2000 Amendments issued since publication Amd. No.DateComments
4、National foreword This British Standard reproduces verbatim ISO 8514-1:2000 and implements it as the UK national standard. It supersedes BS ISO 8514-1:1992 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee IDT/1, Document imaging, to Subcommittee IDT/1/
5、1, Quality, which has the responsibility to: aid enquirers to understand the text; present to the responsible 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
6、 promulgate them in the UK. A list of organizations represented on this committee can be obtained on 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
7、the section entitled International Standards Correspondence Index, or by using the Find facility 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 applicat
8、ion. 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, the ISO title page, pages ii to iv, pages 1 to 7 and a back cover. The BSI copyright notice displayed in this document ind
9、icates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 8514-1:2000(E) INTERNATIONAL STANDARD ISO 8514-1 Second edition 2000-05-01 Micrographics Alphanumeric computer output microforms Q
10、uality control Part 1: Characteristics of the test slide and test data Micrographie Microformes COM alphanumriques Contrle de la qualit Partie 1: Caractristiques du cadre de surimpression et des donnes-test Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled
11、Copy, (c) BSI ISO 8514-1:2000(E) ii? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8514-1:2000(E) ?iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member
12、 bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental
13、 and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directiv
14、es, Part 3. 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 least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elemen
15、ts of this part of ISO 8514 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 8514-1 was prepared by Technical Committee ISO/TC 171,Document imaging applications, Subcommittee SC 1,Quality. This second edi
16、tion cancels and replaces the first edition (ISO 8514-1:1992), which has been technically revised. ISO 8514 consists of the following parts, under the general titleMicrographics Alphanumeric computer output microforms Quality control: ?Part 1: Characteristics of the test slide and test data ?Part 2:
17、 Method Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8514-1:2000(E) iv? Introduction The use of alphanumeric computer output microforms (alphanumeric COM) for the storage of information requires valid, reliable methods by which the qu
18、ality of the images can be measured. This is necessary to achieve consistent usable output. Of primary importance in the production of microforms containing alphanumeric information is the legibility of the information presented to the user. This is true whether the microform used is the original (f
19、irst generation) or a duplicate. ISO 8514 specifies a method for measuring the quality of computer output microforms (COM) and specifies a test form slide and test data to be used for applying this method. It applies to microforms containing variable data produced using a cathode-ray tube, light-emi
20、tting diodes or a laser, and fixed data such as that contained on a form slide, with effective reduction ratios of 1:24 through 1:48, in accordance with ISO 9923. This International Standard applies only to COM recorders that use a physical form slide. This International Standard describes various s
21、ystems and equipment to establish test guidelines whereby the user can establish and maintain a given level of performance using the minimum of sophisticated equipment. The method requires a test form slide and test data generated from the COM image generator. Licensed Copy: sheffieldun sheffieldun,
22、 na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD?ISO 8514-1:2000(E) ?1 Micrographics Alphanumeric computer output microforms Quality control Part 1: Characteristics of the test slide and test data 1?Scope This part of ISO 8514 specifies the characteristics o
23、f the test slide and the test data used for measuring the output quality of alphanumeric COM recorders that use a physical form slide. 2?Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 8514. Fo
24、r dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 8514 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For unda
25、ted references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 5-2:1991,Photography Density measurements Part 2: Geometric conditions for transmission density. ISO 5-3:1995,Photography Densit
26、y measurements Part 3: Spectral conditions. ISO 5-4:1995,Photography Density measurements Part 4: Geometric conditions for reflection density. ISO 446:1991,Micrographics ISO character and ISO test chart No. 1 Description and use. ISO 3334:1989,Micrographics ISO resolution test chart No. 2 Descriptio
27、n and use. ISO 6196-7:1992,Micrographics Vocabulary Part 7: Computer micrographics. ISO 9923:1994,Micrographics Transparent A6 microfiche Image arrangements. 3?Terms and definitions For the purposes of this part of ISO 8514, the terms and definitions given in ISO 6196-7 and the following apply. 3.1
28、test slide form slide designed for use in measuring the quality of output from a COM system Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8514-1:2000(E) 2? 4?Description of the original artwork Artwork from which a test slide is made s
29、hall be as shown in Figure 11)and described in 4.1 to 4.6. Dimensions given are based on artwork in which the alignment grid (4.1) is 270,9 mm ? 0,1 mm ? 335,3 mm ? 0,1 mm. NOTE?The numbers in circles in subsequent clause headings refer to the relevant area in Figure 1. 4.1? Alignment grid The align
30、ment grid shall comprise elements from standard grid of 132 characters per line by 64 lines per page, located along each side and filling line 33 and columns 66 and 67 of the artwork. The grid shall have a height of 270,9 mm and width of 335,3 mm ? 0,1 mm. Each element of the alignment grid shall be
31、 2,540 mm ? 4,233 mm ? 0,1 mm. Each element shall be positioned to within ? 0,02 mm of its nominal position. The width of the element boundary line shall be between 0,12 mm and 0,17 mm. Regardless of the line width chosen, the tolerance shall be ? 0,01 mm. 4.2? Density measuring areas The density me
32、asuring areas shall comprise two circles, each with a minimum diameter of 95 mm, to allow measurement with a densitometer after reduction up to 1:48. One shall be a 50 %2), 25 screen halftone (Figure 1 area A) and the other shall be solid black (Figure 1 area B). The difference in visual reflection
33、density, measured with a densitometer complying to ISO 5-3 and ISO 5-4, between pattern (Figure 1 area B) and the background of the artwork shall be at least 2,00. 4.3 Test chart area The test chart area shall comprise of the ISO characters from 45 to 280 (extension of ISO test chart No. 1 specified
34、 in ISO 446) and the ISO No. 2 test patterns 1 to 10, in accordance with ISO 3334. 4.4 Density balancing areas The density balancing areas shall comprise of nine 25 screen halftones ranging from 10 % to 90 % in increments of 10 %. Each is identified by a solid number, one-half white and one-half bla
35、ck indicating the appropriate percentage. 1)The artwork is positive-appearing whereas the actual test slide will be negative-appearing. 2)A 50 % halftone refers to the ratio of the dotted area to the whole area. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontro
36、lled Copy, (c) BSI ISO 8514-1:2000(E) ?3 Figure 1 Sample layout of original artwork Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8514-1:2000(E) 4? 4.5? COM character legibility test areas The COM character legibility test areas shall
37、comprise five identical patterns located in the centre and near the corners of the test slide. Each pattern contains the characters “E” and “H” arranged in columns in pairs of identical size. Each group of two characters increases horizontally in height and in width in accordance with Table 1, and v
38、ertically, in line width in accordance with Table 2. Two character spaces shall be allowed between characters horizontally to facilitate the alignment of the image generator letters with the image of the test slide. Character height and width shall be measured as indicated in Figure 2. Figure 2 Exam
39、ples of character measurements Table 1 Character height and width Dimensions in millimetres Column?12345 Character height (H)?2,55?2,75?2,95?3,15?3,35 Character width (L)?1,78?1,92?2,05?2,20a2,20a a Maximum character width allowing sufficient space between adjacent characters. Table 2 Character line
40、 width Dimensions in millimetres Row?A?B?C?D Character line width?0,20?0,32?0,44?0,56 4.6? Character test area The character area shall comprise two blocks of pairs of lines of alphabetic characters in alphabetical order, upper case and lower case, normal weight, upright in one column and italic in
41、the other. Sanserif characters are preferred. The height in millimetres ofupper case characters in each pair of lines shall be as indicated in Figure 1. The minimum line spacing shall be 1,5 of the height of upper case characters. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+0
42、0:00 2006, Uncontrolled Copy, (c) BSI ISO 8514-1:2000(E) ?5 5?Test slide characteristics The information given in this clause is intended as a guide for test slide manufacturers and for users to prepare specifications. 5.1 Holder The test slide shall be held in a rigid holder. 5.2 Reduction ratio Th
43、e reduction ratio of the test slide shall be as specified by the manufacturer of the COM recorder, with a tolerance of ? 0,05 %. 5.3 Polarity The test slide shall be negative-appearing, that is, clear lines on a dark background. 5.4 Density The visual diffuse transmission density of the clear areas,
44、 measured with a densitometer complying to ISO 5-2 and ISO 5-3 shall be not greater than 0,20. The background density shall be not less than 2,00. 5.5 Defects In the image area of the test slide used for test purposes there shall be no defects, which when enlarged by the nominal reduction ratio of t
45、he test slide, shall be larger than 0,05 mm. 5.6 Resolution The quality of manufacture of the test slide shall be such that at a minimum the character 80 of the ISO test chart No. 1 or the pattern 5.0 of the ISO resolution test chart No. 2 is resolved on the test slide. A tolerance of ? 10 % applies
46、 to the nominal width of the clear or black lines of the test chart. 5.7 Conformance The manufacturer shall supply with each test slide a certificate of its compliance with the requirements of this part of ISO 8514. 6?Test data Data shall be generated in the following areas (see Figure 3): 6.1? Alig
47、nment area The alignment area consists of the character “H” generated in the overall grid. 6.2? COM character legibility test areas The COM character legibility test areas consist of the characters “E” and “H” accurately located as indicated in figure 3. They shall be juxtaposed with the same charac
48、ters in the test slide. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8514-1:2000(E) 6? 6.3? COM character set area A typical set of COM characters, upper-case letters, numbers and symbols, and when appropriate the lower-case letters,
49、shall be generated in this area, in alphabetical order, according to the space available. It is also useful to generate a line consisting of adjacent characters of similar appearance: ? I, 1; ? 0, O, Q; ? B, 8; ? G, 6, 5, S; ? Z, 7, 2. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 8514-1:2000(E) ?7 Figure 3 Sample layout of test data Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 13:11:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 85
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