HP Designjet 510 Printer series - Manual (Page 77)

Stepped lines
When you look at the image you have printed there are ‘stepped lines’ in the borders of arrows and diagonal
lines. The lines should be straight with no stepping.
The following is an example of what you might see if you have problems with stepped lines.
To solve this problem:
1. Increase the dpi setting by changing the print quality to Best in the front panel and driver software.
2. The problems may be inherent in the image you are trying to print. Try to improve the image with the
application that generated the file.