Printronix P9000 Series, User'S Reference Manual

Page: 74 / 334

Graphics 4-6
In Normal Density Plot :
D The mode is selected with the odd dot plot control code ENQ (05 hex).
D The odd-numbered dot columns are addressed to produce a horizontal and vertical
density that varies, based on the mode of operation:
Data Processing (DP)
Correspondence (NLQ)
High Speed A (HS)
High Speed B (HSB)
High Speed C (HSC)
Horizontal dpi Vertical dpi
60
90
60
60
60 72
96
48
72
72
Print Mode
D Different print modes cannot be mixed on the same dot row.
Figure 4-5 illustrates normal density dot plot.
Figure 4-5. Normal Density Plot
In Double Density Plot :
D Two separate shuttle strokes produce double density plot. First the even plot comĆ
mand (EOT, 04 hex) and dot data are sent, followed by the odd plot command (ENQ,
05 hex) and dot data, allowing a maximum of 1584 dots in a single dot row at 60 dpi.
D Even dot plot is sent first for control of the initial plot pattern; then odd dot plot is
sent for control of the final dot pattern.
D The dots average .017" in diameter.
D The vertical density remains the same in normal and high density plotting.
Figure 4-6 illustrates double density plotting.
Figure 4-6. Double Density Plot