Xerox 721P88200 manual • • • • • •, AFP architecture, Object Content Architectures

AFP SUMMARY

AFP architecture

The AFP system is a sub-architecture of the Systems Application Architecture (SAA). The AFP print platform consists of architected data streams for three areas: applications, print resources, and printers. This structure provides the foundation for keeping the applications independent from specific printer hardware requirements. This independence helps to reduce the cost of application development and maintenance.

Like other SAA architectures, AFP and Intelligent Print Data Streams (IPDS) are components of IBM’s Open Blueprint architecture. As the successor to SAA, Open Blueprint is a truly open architecture that helps IBM and others deliver integrated, interoperable products and solutions.

AFP combines the data types (resources) described previously to create data streams. This section describes the architectures and data streams as recognized by the DocuPrint IPS printers.

Object Content Architectures

Documents are made up of different kinds of data, such as text, graphics, images, and bar codes. Object Content Architectures (OCAs) describe the structure and content of each type of data format that exists in a document and appears in a data stream.

The object content architectures, also known as transmission objects, are:

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Bar Code Object Content Architecture (BCOCA), which describes a predetermined pattern of bars and spaces, known as bar codes, that represent alphanumeric data in a machine- readable format.

Formatted Data Object Content Architecture (FD:OCA), which allows you to interchange data that has already been formatted.

Font Object Content Architecture (FOCA), which describes the structure and contents of fonts. It also allows you to interchange the font descriptions and specify color.

Graphics Object Content Architecture (GOCA), which describes vector or object-oriented graphics. It also allows you to interchange and present graphics data and specify color.

Image Object Content Architecture (IOCA), which describes bitmapped image objects, including data compression, gray- scale, encoding, and other recording data. It also allows you to interchange and present images.

Presentation Text Object Content Architecture (PTOCA), which describes text objects formatted for all-points addressable presentations, including font, text color, and other visual attributes. It also allows you to interchange and present presentation text data, lines, and boxes.

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