1、BSI Standards PublicationBS ISO 15341:2014Graphic technology Methodfor radius determination ofprinting cylindersBS ISO 15341:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 15341:2014.The UK participation in its preparation was entrusted to TechnicalCommit
2、tee PAI/43, Graphic technology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution
3、2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 75280 3ICS 37.100.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 December 2014.Amendments issued s
4、ince publicationDate Text affectedBS ISO 15341:2014 ISO 2014Graphic technology Method for radius determination of printing cylindersTechnologie graphique Mthode de mesure du rayon de cylindres dimpressionINTERNATIONAL STANDARDISO15341First edition2014-12-01Reference numberISO 15341:2014(E)BS ISO 153
5、41:2014ISO 15341:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting o
6、n the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.or
7、gWeb www.iso.orgPublished in SwitzerlandBS ISO 15341:2014ISO 15341:2014(E)Contents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms, definitions, and symbols 13.1 Terms and definitions . 13.2 Symbols . 24 Measurement device 24.1 Principle 24.2 Apparatus 34.3 Material . 34.4 Di
8、mensions of critical functional parts 44.5 Indicator . 44.6 Calibration tool . 55 Test procedure 55.1 Calibration 55.2 General measurement conditions 65.3 Preliminary preparation . 65.4 Measurement 66 Test reporting 66.1 Required information 66.2 Optional information . 7Annex A (normative) Device fo
9、r measuring mid-web flexography sleeves 8Annex B (informative) Device for measuring mid-web flexography sleeves Technical drawings .10 ISO 2014 All rights reserved iiiBS ISO 15341:2014ISO 15341:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of natio
10、nal standards bodies (ISO member 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. Internati
11、onal organizations, governmental 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.The procedures used to develop this document and those intended
12、 for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso
13、.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will
14、 be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressi
15、ons related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 130, Graphic technology.iv ISO 2014 All ri
16、ghts reservedBS ISO 15341:2014ISO 15341:2014(E)IntroductionAlthough the external radius of the cylinders used in offset presses is fixed by the design of the printing press, there are applications in flexography and gravure printing where the diameter of individual cylinders is critical for the fina
17、l result and has to be determined. This International Standard provides a recommended device and procedure to accomplish such measurements.The body of this International Standard describes the operational principles and general requirements, including all relevant parameters necessary for the functi
18、onal design. Different areas of application are covered in different annexes. For each particular application, a normative annex contains the set of critical parameters and a corresponding informative annex contains a set of technical drawings to be utilized in the creation of a suitable device. Fun
19、ctional variables are defined in the body of this International Standard and the aims and tolerances for each targeted application are given in the applicable normative annex.Standard hand-held micrometers have traditionally been used for checking and determining the radius of printing cylinders. Be
20、cause the micrometer positioning on a cylinder surface is normally carried out by a human operator, problems with poor repeatability, low precision, and weak reliability of the measurements have been reported. The test method and subsequent device(s) described in the present International Standard r
21、epresent a cost-efficient, reliable, and operator-independent means of determining the radius of printing cylinders.The normative annex included in this International Standard defines a particular methodology for measuring the external radius of flexographic printing sleeves and the informative anne
22、x provides guidance for the physical design of the instrument.Sleeves are the structural, mechanical, and dimensional base of a printing forme for different web printing methods. Flexographic printing plates are assembled/mounted on the surface of a sleeve to create a printing forme. Dimensional var
23、iations of a sleeve radius can lead to length variations of the printed matter that can have a direct impact on the final appearance of prints. Dimensional variations of a sleeve radius can also have an impact on other functional properties (e.g. in the case of packaging). ISO 2014 All rights reserv
24、ed vBS ISO 15341:2014BS ISO 15341:2014Graphic technology Method for radius determination of printing cylinders1 ScopeThis International Standard defines a method for measuring the external radius of printing cylinders, specifies critical parameters and operational instructions and provides recommend
25、ations for instrument design.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced d
26、ocument (including any amendments) applies.ISO 1101:2004, Geometrical product specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-outISO 4287, Geometrical Product Specifications (GPS) Surface texture: Profile method Terms, definitions and surface texture pa
27、rametersISO 6507-1:2004, Metallic metarials Vickers hardness test Part 1: Test methodISO 12637-1, Graphic technology Vocabulary Part 1: Fundamental terms3 Terms, definitions, and symbols3.1 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 12637-1 and the
28、 following apply.3.1.1flexographic printingforme-based process/method using flexible relief formes where the raised inked areas reproduce images onto a substrate using low viscosity inks3.1.2sleeveseamless tube used to fasten printing plates to rapidly change printing forme on a press3.1.3mandrelcyl
29、indrical shaft equipped with a mechanism that allows a sleeve to be securely attached3.1.4repeatcircumference of the external surface of a printing forme when installed for printingNote 1 to entry: Sleeves are commonly designated by their repeat.INTERNATIONAL STANDARD ISO 15341:2014(E) ISO 2014 All
30、rights reserved 1BS ISO 15341:2014ISO 15341:2014(E)3.1.5printing cylinderrotating carrying component of a printing forme structureNote 1 to entry: A printing cylinder can either be a sleeve on a mandrel or a solid cylinder.3.2 SymbolsFor the purposes of this document, the following symbols apply. th
31、ermal expansion coefficient (K1)4 Measurement device4.1 PrincipleThe measuring device is formed by a mechanical frame supporting two flat surfaces arranged at a precise angle, as illustrated in Figure 1. A standard high-precision indicator (micrometer) is mounted at the intersection of the two plane
32、s created by the previously defined surfaces, as shown in Figure 1.The device positioning on a cylinder surface is an action physically independent of the measuring using a dedicated frame for positioning. The cylinder radius, R, in contact with the measuring tool surface is always at a right angle
33、to the plane. This geometric arrangement allows for the measurement to always be performed perpendicularly to the tangent of the cylinder surface.Key frame angleR radius of the cylinderh measured distanceFigure 1 Operational principle and 3D rendering (example of a device with a 60 angle)2 ISO 2014
34、All rights reservedBS ISO 15341:2014ISO 15341:2014(E)When the device is correctly calibrated, the measured distance, h, is a measure of the cylinder radius and can be converted using a suitable formula based on the frame angle. In practice, the measured distance, h, can be used to estimate the cylin
35、der radius since the equality is only true if the cylinder is perfectly round. This feature makes the device sensitive to the cylinder shape, allowing for capture of deviations from a perfect round. For measurement of out-of-roundness, it is recommended to take at least three measurements, rotating
36、the cylinder by 60 between measurements.4.2 ApparatusTable 1 defines the critical parameters necessary for the construction of an apparatus. Aims and tolerances for specific applications are provided in the annexes.NOTE 1 It is intended that future editions of this International Standard will contai
37、n specific applications beyond that included in Annex A.Table 1 Critical parametersParameter UnitFrame angle Thermal expansion coefficient, K1Total weight of assembled apparatus kgTotal width of the frame active surfaces mmEdge radius of the frame active surfaces mmPosition of the apparatus centre o
38、f massammIndicator spindle movement range mmCalibration tool (ring) diameter mmaLocated along the spindle axis, distance measured from the top of the frame.Annex A provides information for measurement of mid-web flexographic sleeves.NOTE 2 Annex A lists the critical parameters for a particular appli
39、cation, measuring mid-web flexography sleeves having a repeat between 490 mm (radius of 77,986 mm) and 740 mm (radius of 117,775 mm).The device shall contain a mechanism capable of assuring that, during operation, both contact lines generated between the printing cylinder surface and the frame surfa
40、ces are parallel to the cylinder longitudinal central axis to ensure a correct reading of the distance. The same or a complementary mechanism shall be capable of assuring the correct operational positioning of the indicator spindle axis during operation.NOTE 3 A possible implementation is the usage
41、of a mechanism (e.g. by means of a spirit level or an electronic measure) assuring that the frame is horizontal, and therefore also indirectly assuring that the spindle axis is vertical, during operation while in contact with a cylinder.4.3 MaterialThe apparatus frame and calibration tool shall be c
42、onstructed in a material resistant to minor shocks resulting from normal manual handling. The material shall have an equal or less than the value specified in Annex A. Handles made from a non-thermal conducting material shall be assembled to the frame in order to minimize temperature increase result
43、ing from hand contact.The total weight of the assembled apparatus including frame, handles, indicator, rods, and eventual extender shall be inside the aim and tolerances specified in the applicable normative annex. Defining a mass tolerance improves inter-instrument repeatability, specifically when
44、measuring cylinders with a surface of compressible nature.All active surfaces shall be surface-finished in order to attain a roughness value (Ra) of at least 0,8 m defined according to ISO 4287. ISO 2014 All rights reserved 3BS ISO 15341:2014ISO 15341:2014(E)To increase abrasion and corrosion protec
45、tion, all active surfaces shall be coated using a material having a Vickers Pyramid Number (HV) equal or higher than 1100HV30 according to ISO 6507-1:2004. Active surfaces are identified in Figure 2. The required protection can be achieved by any means of surface treatment deposition and material ch
46、oice. The treatment shall not compromise dimensional tolerances or roughness specifications.NOTE 15 m of chemical nickel plating (electroless nickel plating) is an example of a suitable surface treatment.Key1 active surfacesFigure 2 Active surfaces identification of frame and calibration tool4.4 Dim
47、ensions of critical functional partsThe two identical flat active surfaces of the mechanical frame which are in contact with the cylinder during measurement shall have a width and edge radius as specified in Annex A. The specified total width dimension includes the width of the contact line and the
48、two-edge radius. Their length shall be sufficient to ensure a correct physical contact between the device active surface and the cylinder, in this way covering the complete range of specified radius.The indicator shall be mounted in a position assuring the spindle axis absolute symmetry in relation
49、to the frame.The assembled apparatus centre of mass shall be located along the spindle axis at a position specified in Annex A.4.5 IndicatorThe indicator shall be mounted following the manufacturers instructions in order not to interfere with performance.The indicator shall have a precision of at least 0,001 mm, an accuracy of at least 0,003 mm, and a measuring force less than 1,8 N. The valid operating temperature shall be between 10 C and 40 C.The indicator measuring tip shall be flat with a round section, mad
