F–5Printer Specifications
Print Rates
The printing speed of text characters is a function of the selected font and dot
density, and is measured in lines per minute (LPM). Print speed is
independent of the number of characters configured in the character set. Text
attributes such as bold or emphasized printing, superscripts, subscripts, or
elongated characters cause print rates to decrease to not less than half the
rates of the font without such attributes. Table F–1 charts typical P9212
printing rates. The plotting speed of graphics is measured in inches per
minute (ipm), and is calculated as follows:
Shuttle Speed x Vertical Density
60,000 Plotting speed in=
1
x
inches / minute
Shuttle speed varies with the horizontal dot density:
Horizontal Density
50
60
70
80
90
100
110
120
130
140
150
180
200
(dots / inch)
Selectable by
graphics
control codes
(milliseconds / stroke)
Shuttle Speed
6.25
6.25
6.25
6.25
6.25
6.25
6.25
6.25
6.75
7.25
7.8
9.375
10.4
NOTES:
1. The theoretical plot speed is reduced by half if there are adjacent dots in
a dot row (as in the case of RASTER plot). This limitation is due to the
hammer fire cycle time.
2. The theoretical plot speed is again reduced by half if the number of
non–adjacent dots in a row exceeds 86% of the maximum number of
non–adjacent dots for a given horizontal print resolution (this limitation
is due to power consumption requirement).
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