该规范EPUB Open Container Format(OCF)3.0定义了一种文件格式和处理模型，用于封装包括一个或多个EPUB？发布到单个文件容器中。 本规范是组成EPUB 3的一系列相关规范之一，EPUB 3是基于XML和Web标准的数字出版物交换和传递格式的第三次主要修订。它旨在与构成EPUB 3的其他规范一起阅读和理解: EPUB 3概述[EPUB3Overview]，它提供了EPUB和 EPUB 3文档其余部分的路线图。应该先看概述。 EPUB Publications 3.0[Publications30]，它定义了出版物级语义和 EPUB出版物的总体一致性要求。EPUB Content Documents 3.0[ContentDocs30]，它定义了XHTML、SVG和CSS的配置文件 用于EPUB出版物的上下文中。 EPUB Media Overlays 3.0[MediaOverlays30]，它定义了 文本和音频的同步。 OCF是EPUB出版物所需的容器技术。OCF可能在以下工作流程中发挥作用: 在制作电子出版物的准备步骤期间，OCF可用作 在不同个人之间交换正在进行的出版物时的容器格式和/或 不同的组织。 当将出版商或转换公司的电子出版物提供给发行或 销售渠道，OCF是推荐用作运输格式的集装箱格式。 将最终出版物交付给EPUB阅读系统或用户时，需要使用OCF 保存构成发布的所有资产的容器的格式。 OCF规范定义了在抽象中构建文件集合的规则:“抽象容器”。它还定义了在ZIP存档中表示这个抽象容器的规则:“物理容器”。ZIP物理容器的规则建立在[ODF]使用的ZIP技术之上。OCF还为那些需要此功能的EPUB出版物定义了一种混淆嵌入字体的标准方法。 本规范取代开放容器格式（OCF）2.0.1[OCF2]。有关本规范与其前身之间差异的信息，请参考【EPUB3Changes】。

This specification, EPUB Open Container Format (OCF) 3.0, defines a file format and processing model for encapsulating the sets of related resources that comprise one or more EPUB？ Publications into a single-file container. This specification is one of a family of related specifications that compose EPUB 3, the third major revision of an interchange and delivery format for digital publications based on XML and Web Standards. It is meant to be read and understood in concert with the other specifications that make up EPUB 3:

• The EPUB 3 Overview [EPUB3Overview], which provides an informative overview of EPUB and a
• roadmap to the rest of the EPUB 3 documents. The Overview should be read first.
• EPUB Publications 3.0 [Publications30], which defines publication-level semantics and
• overarching conformance requirements for EPUB Publications.
• EPUB Content Documents 3.0 [ContentDocs30], which defines profiles of XHTML, SVG and CSS
• for use in the context of EPUB Publications.
• EPUB Media Overlays 3.0 [MediaOverlays30], which defines a format and a processing model for
• synchronization of text and audio.

OCF is the required container technology for EPUB Publications. OCF may play a role in the following workflows:

• During the preparation steps in producing an electronic Publication, OCF may be used as the
• container format when exchanging in-progress Publications between different individuals and/or
• different organizations.
• When providing an electronic Publication from publisher or conversion house to the distribution or
• sales channel, OCF is the recommended container format to be used as the transport format.
• When delivering the final Publication to an EPUB Reading System or User, OCF is the required
• format for the container that holds all of the assets that make up the Publication.

The OCF specification defines the rules for structuring the file collection in the abstract: the "abstract container". It also defines the rules for the representation of this abstract container within a ZIP archive: the "physical container". The rules for ZIP physical containers build upon the ZIP technologies used by [ODF]. OCF also defines a standard method for obfuscating embedded fonts for those EPUB Publications that require this functionality. This specification supersedes Open Container Format (OCF) 2.0.1 [OCF2]. Refer to [EPUB3Changes] for information on differences between this specification and its predecessor.