TO QUALITY CONTROL 3A CORPORATION Originally printed in Japan as "Dai-3-pan Hinshitsu Kanri Nyumon" (Introduction to Quality Control 3rd Edition) by Kaoru Ishikawa. ©Kaoru Ishikawa 1989, published by JUSE Press Ltd. Softcover reprint of the hardcover 1st edition 1989 Distributed outside Japan and North America by: CHAPMAN & HALL 2 -6 Boundary Row, London SEl 8HN, UK. ISBN-13: 978-94-011-7690-3 e-ISBN-13: 978-94-011-7688-0 DOl: 10. 1007/978-94-011-7688-0 All rights reserved. No part of this book may be reproduced in any form or by any means, without permission in writing from the publisher. First Printing . . . . . October 1990 Translated by J. H. Loftus Contents Preface XVII Acknowledgment XIX CHAPTER 1 WHAT IS QUALITY CONTROL? 1 1. 1 What is Quality Control? 1 1. 1. 1 The Definition of Quality Control 1. 1. 2 Some Misunderstandings about Quality Control and Total Quality Control 1. 1. 3 The Benefits of Companywide Quality Control 1. 2 The History and Current Status of Quality Control 7 1. 3 Advances in Quality Assurance 13 1. 4 What is Quality? 15 1. 4. 1 Quality to Satisfy the Consumer 1. 4. 2 True Quality Characteristics and Substitute Characteristics; Product Research 1. 4. 3 Quality Analysis and Product Research 1. 4. 4 Clarifying Definitions Concerning Quality 1. 4. 5 What are Good Quality and Good Products? 1. 5 What is Control? 36 1. 5. 1 The Old-Fashioned Approach to Control 1. 5. 2 Control Methods and Philosophy 1. 5. 3 Action for Recurrence Prevention ("Permanent Fix") 1.