Canon LBP7660Cdn Manual page 319

[Error
Diffusion] /
[Halftones]
[Resolution] /
[Gradation]
[Zoom] [Off] / [On]
[Auto] /
[Image Orientation] [Vertical] /
[Horizontal]
[Auto] /
[Print Position] [Center] /
[Top Left]
Specify the halftone display method when printing.
The [Error Diffusion] is that it is possible to print at a higher resolution
than [Resolution] or [Gradation], but texture 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.
[Resolution] allows you to 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] allows you to perform printing that combines smooth
gradation with edge quality. It is suitable for printing graphics or graphs
that use gradation.
Specify whether to enlarge or reduce the printing.
When it is set to [On], it automatically scales them to match with the
effective print area of the output paper and prints.
Specify whether to print the image vertically or horizontally.
Specify the location where the image will be printed.