Enabling the high gloss mode improves the fixation of toner by decreasing the print speed. When the high gloss mode is enabled, the print speed is 75 ppm and no speed switching occurs.
Open the Settings Editor and go to: .
Go to the [Basic] section.
Use the [High gloss mode] setting to enable the high gloss mode.
When you change the [High gloss mode] setting, you need to perform the automatic gradation adjustment.