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首页Encapsulated PostScript File Format Specification
Encapsulated PostScript File Format Specification

EPS格式广泛用于Photoshop,PDF,Illustrator等软件,是Adobe公司的核心格式之一。该资源是EPS文件格式规范,讲述了EPS文件的组织方式、命令解析等。
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Encapsulated PostScript
File Format Specification
Version 3.0
1 May 1992
Adobe Developer Support
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®®
Adobe Systems Incorporated
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Copyright
1985–1988, 1990, 1992 by Adobe Systems Incorporated. All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior
written consent of the publisher. Any software referred to herein is furnished under license and may
only be used or copied in accordance with the terms of such license.
PostScript is a registered trademark of Adobe Systems Incorporated. All instances of the name
PostScript in the text are references to the PostScript language as defined by Adobe Systems Incorpo-
rated unless otherwise stated. The name PostScript also is used as a product trademark for Adobe Sys-
tems’ implementation of the PostScript language interpreter.
Any references to a “PostScript printer,” a “PostScript file,” or a “PostScript driver” refer to printers,
files, and driver programs (respectively) which are written in or support the PostScript language. The
sentences in this book that use “PostScript language” as an adjective phrase are so constructed to rein-
force that the name refers to the standard language definition as set forth by Adobe Systems Incorpo-
rated.
PostScript, the PostScript logo, Display PostScript, Adobe, the Adobe logo, Adobe Illustrator, Tran-
Script, Carta, and Sonata are trademarks of Adobe Systems Incorporated registered in the U.S.A. and
other countries. Adobe Garamond and Lithos are trademarks of Adobe Systems Incorporated. Quick-
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Inc. UNIX is a registered trademark of AT&T Information Systems. X Window System is a trademark
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kind (express, implied or statutory) with respect to this publication, and expressly disclaims any and
all warranties of merchantability, fitness for particular purposes and noninfringement of third party
rights.

3
Contents
1 Introduction 5
2 Guidelines for Creating EPS Files 7
Required DSC Header Comments 7
Conditionally Required Comments 9
Recommended Comments 10
Illegal and Restricted Operators 10
Stacks and Dictionaries 10
Graphics State 11
Initializing Variables 11
Ensuring Portability 12
Miscellaneous Constraints 13
3 Guidelines for Importing EPS Files 13
Displaying an EPS File 13
Producing a Composite PostScript Language Program 14
4 File Types and Naming 22
Apple Macintosh File System 22
MS-DOS and PC-DOS File System 22
Other File Systems 22
5 Device-Specific Screen Preview 22
Apple Macintosh PICT Resource 23
Windows Metafile or TIFF 23
6 Device-Independent Screen Preview 24
Guidelines for EPSI Files 25
7 EPS Example 27
Appendix: Changes Since Earlier Versions
31
Index
33

4 Contents (1 May 92)

5
The encapsulated PostScript file (EPSF)
format is a standard format for importing and
exporting PostScript language files among
applications in a variety of heterogeneous
environments. This appendix details the The
Encapsulated PostScript
File Format Specification
The encapsulated PostScript file (EPSF) format is a standard format for
importing and exporting PostScript language files among applications in a
variety of heterogeneous environments. This appendix details the format
and contains specific information about the Macintosh
®
and MS-DOS
®
environments. The EPSF format is based on and conforms to the document
structuring conventions (DSC) detailed in the
PostScript Document Structuring
Conventions Specification
available from the Adobe Systems Developers
Association. Proper use of the document structuring conventions is required
when creating a PostScript language file that conforms to the EPSF format.
The main topics of this appendix include creating encapsulated PostScript
(EPS) files, importing EPS files into other PostScript language files, and
optional screen preview images for EPS files. Finally, a detailed example
illustrates the concepts presented throughout this appendix.
1 Introduction
An encapsulated PostScript file is a PostScript language program describing
the appearance of a single page. Typically, the purpose of the EPS file is to
be included, or “encapsulated,” in another PostScript language page descrip-
tion. The EPS file can contain any combination of text, graphics, and images,
and it is the same as any other PostScript language page description with only
a few restrictions. Figure 1 conceptually shows how an EPS file can be
included in another PostScript language document.
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