ISO INTERNATIONAL STANDARD 18948 Firstedition 2018-11 Imaging materials Photo books - Test methods for permanence and durability Matériaux pour I'image - Albums photos - Méthodes d'essai de permanence et de durabilite Reference number IS0 18948:2018(E) so @IS02018 IS0 18948:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2018 - All rights reserved IS0 18948:2018(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Image permanence tests for covers and pages 4.1 General .4 4.2 Sample preparation . ..4 4.3 Thermal stability during long-term dark storage ..5 4.3.1 General. 4.3.2 Procedures .5 4.3.3 Reporting. .5 4.4 Light stability. .6 4.4.1 General .6 4.4.2 Covers 6 4.4.3 Pages. .6 4.4.4 Reporting. ..6 4.5 Ozone stability. .6 4.5.1 General. 4.5.2 Covers .6 4.5.3 Pages. .1 4.5.4 Reporting. .7 4.6 Humidity stability. 4.6.1 General .7 4.6.2 Covers and pages .7 4.6.3 Reporting. .7 5 Book integrity tests .8 5.1 General 8 5.2 Ageing conditions .8 5.3 Page pull test. ..8 5.3.1 General 5.3.2 Test procedure 5.3.3 Alternate test procedure 5.3.4 Calculation of the binding strength .10 5.4 Peeling and lamination durability .10 5.4.1 General ..10 5.4.2 Resistance to delamination .11 5.4.3 Assessment of age related lamination and binding strength .11 5.4.4 Peeling resistance and lamination bond strength for protective laminate .11 5.4.5 Internal bond strength for glued single side sheets.. ..11 5.4.6 Test sample preparation, results assessment and reporting. ..12 5.5 Book block attachment to the cover (heat durability). ..12 5.5.1 General. ..12 5.5.2 Book binding strength (heat durability) .12 5.5.3 Opening and closing durability ..12 Book blocking. 6 .13 6.1 General .13 6.2 Test conditions. .13 6.3 Test target design .14 6.4 Conditioning of test specimen .15 6.5 Test methods. .15 6.5.1 General. ..15 @ IS0 2018 - All rights reserved iii