Printronix P9000 Series manual Normal Density Plot Double Density Plot

In Normal Density Plot:

DThe mode is selected with the odd dot plot control code ENQ (05 hex).

DThe odd-numbered dot columns are addressed to produce a horizontal and vertical density that varies, based on the mode of operation:

Print Mode	Horizontal dpi	Vertical dpi
Data Processing (DP)	60	72
Correspondence (NLQ)	90	96
High Speed A (HS)	60	48
High Speed B (HSB)	60	72
High Speed C (HSC)	60	72

DDifferent 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:

DTwo separate shuttle strokes produce double density plot. First the even plot comF 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.

DEven 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.

DThe dots average .017" in diameter.

DThe vertical density remains the same in normal and high density plotting.

Figure 4-6 illustrates double density plotting.

Figure 4-6. Double Density Plot

4-6 Graphics