1. IPDS Overview
About the IPDS Feature
The Intelligent Printer Data Stream (IPDS) is a structured field data stream designed to manage and
control All Points Addressable (APA) printers. APA is a printing concept that allows users to position text,
images, graphics, and overlays at any defined point on a printed page.
IPDS allows both data and commands to be streamed to the printer via channels, controllers or any type
of networking link which supports the transparent transmission of data to print processes that are resident
in the device.
Commands within the data stream also allow the "Host" process to control the media handling
capabilities of the device, select source drawers, jog output and other operations dealing with paper. In
addition, the commands provide the means for managing the downloading of fonts and other stored
resources such as overlays and page segments that are required at presentation time to construct the
printed page. Finally, the commands provide the means for returning error information and performing
recovery actions. The source IPDS architecture document is the Intelligent Printer Data Stream Reference.
The machine supports the following IPDS Architecture command sets.
• Device Control (DC1)
• Text (TX1 with PTOCA PT1, PT2 and PT3)
• IM Image (IM1 with IMD1)
• IO Image (IO1 with IOCA FS10 + 8-bit Grayscale via halftoning), FS11, FS40, FS42 and FS45)
• Graphics (GR1 with GOCA DR/2V0)
• Page Segments (PS1)
• Object Container (OC1)
• Overlay (OL1)
• Loaded Font (LF1 and LF3)
• Bar Code (BC1 with BCD1)
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