ISO 6428:1982 技術図面—マイクロコピーの要件 | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of developing International Standards is carried out through ISO technical committees. Every member body interested in a subject for which a technical committee has been authorized 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.

Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council.

International Standard ISO 6428 was developed by Technical Committee ISO/TC 10, Technical drawings, and was circulated to the member bodies in February 1981.

It has been approved by the member bodies of the following countries:

The member bodies of the following countries expressed disapproval of the document on technical grounds:

Australia

France

Switzerland

USA

0 Introduction

Microcopying procedures allow the information contained in original technical drawings and other drawing office documents to be reduced to smaller sizes, thus facilitating transport, handling and storage.

However, it should be noted that the possibility of obtaining serviceable enlargements from a microform depends above all on the good quality of the microform (see ISO 3272/2) and this condition can be realized only if the original document is prepared in accordance with appropriate rules.

Usually, the original is a drawing or associated document prepared manually, by a typewriter or other means (plotter). It may also be a combination of these methods.

The draughtsman already has at his disposal several International Standards (such as ISO 128, ISO 3098, ISO 5457) containing general rules of execution which allow the establishment of documents for good reproduction. Nevertheless, for microcopying, these rules should be expanded.

The purpose of this International Standard is to compile in one document the rules to be observed when executing original documents allowing for the establishment of microforms yielding legible enlargement copies.

Due to the fact that the instructions of this International Standard are more extensive than those for other methods of reproduction, it follows that documents complying with the requirements for microcopying can also be reproduced without difficulty by any other reprographic system.

1 Scope and field of application

This International Standard specifies the requirements to be observed when executing original technical drawings and other drawing office documents which are to be microcopied. These requirements will provide for high quality microforms with which legible enlargement copies can be made.

However, the application of these rules is also very beneficial for other methods of reproduction and it is therefore recommended that all drawing office documents be executed in accordance with this International Standard, thereby being available for microcopying at a future date.

2 References