Printronix P3000 Series manual Normal Density Plot, Print Mode Horizontal dpi Vertical dpi

In Normal Density Plot:

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

•The 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 (HS)	60	48
Barcode 145	72.5	72
Barcode 160	80	72

•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:

•Two separate shuttle strokes produce double density plot. First the even plot command (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.

•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.

•The dots average .017 inches in diameter.

•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

4–6 Graphics