Canon LBP6780x Manual page 284

[Resolution]
[Halftones]
6
Specify the setting for [Color Settings].
Specify the resolution for printing the data. It is effective to set [600 dpi] when printing
photographs at standard quality, and to set [1200 dpi] when printing at a higher quality.
Specify the halftone display method when printing.
[Resolution]: You can perform printing that combines smooth gradation with edge quality.
It is suitable for printing graphics or graphs that use gradation.
[Gradation]: You can print with a sharp gradation and well-balanced texture, contrasting
light and shade, which is best suited for printing photo images.
[High You can print in fine detail so that the edges of text data can be seen
Resolution]: clearly. It is suitable for printing data containing text and fine lines.