Canon imageCLASS D1650 All-in-One Monochrome Laser Printer - Manual (Page 515)

Select whether to expand the width of the printable area of A4 size paper in portrait orientation to that of
Letter size.
You can select the printing method used to reproduce halftones (the intermediate range between the lighter
and darker areas of an image) for optimal image quality.
Select a method used to reproduce halftones. This option can be specified for each image type in any one
document.
Select the type of image Select the halftone reproduction method
Setting Menu List
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