Canon imageCLASS MF4690 Operation Manual page 102

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Press [Image Quality] repeatedly to select the resolution, then press [OK].
<FINE>: for fine-print documents (the resolution is twice that of <STANDARD>). (200 x 200 dpi)
<PHOTO>: for documents that contain photographs (the resolution is twice that of <STANDARD>). (200
x 200 dpi)
<SUPER FINE>: for documents that contain fine print and images (the resolution is four times that of
<STANDARD>). (200 x 400 dpi)
<ULTRA FINE> for documents that contain fine print and images (the resolution is eight times that of
<STANDARD>). (400 x 400 dpi)
<STANDARD>: for most text-only documents. (200 x 100 dpi)
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