Canon LBP7660Cdn Manual page 298

[Gradation]
[Halftones]
6
Specify the setting for [Color Settings].
Specify the gradation process for printing the data. It is effective to set [High 1] when printing
photographs at standard quality, and to set [High 2] when printing at a higher quality.
Specify the halftone display method when printing.
[Resolution]: You can print in fine detail so that the edges of text data can be seen
clearly. It is suitable for printing data containing text and fine lines.
[Gradation]: You can perform printing that combines smooth gradation with edge quality.
It is suitable for printing graphics or graphs that use gradation.
[Error It is possible to print at a higher resolution than [Resolution], but texture
Diffusion]: stability is slightly inferior. It is suitable for printing data containing text and
fine lines and data such as CAD data that is printed with sharp edges.