Xerox 96MX - Manual (Page 29)

OVERVIEW
XEROX DOCUPRINT 96/DOCUPRINT 96MX LPS PDL REFERENCE 1-3
LPS hardware components
The hardware components consist of the Advanced Image
Subsystem (AIS).
Advanced Image Subsystem (AIS)
The Advanced Image Subsystem (AIS) consists of three printed wire
boards which contain character dispatcher, font and graphic
memory. The three boards read the character and image data and
convert it into video format for printing. With AIS, imaging a page is a
two-stage process performed by the hardware/firmware
combination:
Step 1. In the first step, referred to as “fill”, the video format is stored into a
64-megabit memory called a ”page buffer.” The entire page is
processed and stored into this memory resulting in a bitmapped
image.
Step 2. In the second step, referred to as “dump”, the page buffer contents
are sent, one scan line at a time, to the laser.
Two page buffers enable one page’s video to be ”filled“ into one
buffer at the same time that the previous page’s video is being
”dumped” from the other page buffer.