You can adjust the Image Quality Adjustment settings. Adjust that value to achieve better printing results.
Press the [User Tools / Counter] key.
Press [Printer Features].
Press [].
Press the [RPGL Menu] tab.
Press [Next] three times.
Press [85. Image Quality Adjustment].
To adjust the colors using [85. Image Quality Adjustment], press [85-1. Brightness], and then enter the value using the number keys.
Press [OK].
Press [Exit].
Print the data from the computer.
The Grey Reproduction settings are ineffective for "RP-GL/2 (Type1, Type3)". The Image Quality Adjustment settings ineffective on raster data for "RP-GL/2 (Type1)".