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IPDS command set
Introduction
The IPDS architecture is divided into functional areas called command sets, each representing a
major printer capability. A command set consists of IPDS commands, including semantics and
syntax. Each command set is divided into at least one subset of defined functions and a subset of
optional functions. A command set may contain more than one subset. The suit of subsets is
such that IPDS Interchange Set 3 is supported.
IPDS command set overview
The IPDS architecture contains the following command sets:
Command set Description
Device Control This command set contains the IPDS commands that initialise the
environment for a logical page. Further, it communicates device
controls, manages resources, and handles the acknowledgement
protocol.
This command set is mandatory.
TEXT (PT4-level support) This command set contains the IPDS commands presenting text
information in a page, a page segment or an overlay.
IM Image This command set contains the IPDS commands presenting im-
ages in a page, a page segment or an overlay.
IO Image (IOCA) This command set contains the IPDS commands presenting im-
ages in a page, a page segment or an overlay. The IO-image com-
mand set provides functions, that are not provided by the IM-im-
age command set, such as image compression and grayscale.
Graphics (GOCA) This command set contains the IPDS commands for presenting
graphics in a page, a page segment, or an overlay.
Bar Code (BCOCA) This command set contains the IPDS commands for presenting
machine-readable bar code information in a page, a page seg-
ment, or an overlay.
Object containers This command set contains the IPDS commands for presenting
TIFF, GIF or PDF files. It is not possible to use Object containers in
a page segment.
Page Segment This command set contains the IPDS commands to store and
present IPDS constructs containing text, graphics, image, and bar
code information. These stored constructs, which can be merged
with a logical page to assume the current environment, are called
page segments.
Overlay This command set contains the IPDS commands to store and
present IPDS constructs containing text, graphics, image, and bar
code information. These stored constructs, are called overlays.
Loaded Font (FOCA) This command set contains the IPDS commands to load font infor-
mation.
For the following IPDS command sets, a data tower defines the data carried. The data towers are:
IPDS command set
Chapter 14 - SRA IPDS 321
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