Konica Minolta 2490MF ユーザーズマニュアル

The printable area on all media sizes is 
up to 4 mm (0.157") from the edges of 
the media.
Each media size has a specific image-
able area, the maximum area on which 
the machine can print clearly and with-
out distortion. 
This area is subject to both hardware 
limits (the physical media size and the 
margins required by the machine) and 
software constraints (the amount of 
memory available for the full-page frame buffer). The guaranteed imageable 
(printable) area for all media sizes is the page size minus 4 mm (0.157") from 
all edges of the media.

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When printing on glossy media, the top margin is 10 mm (0.394").

Envelopes have a nonguaranteed imageable area that varies with envelope 
type.

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Margins are set through your application. Some applications allow you to set 
custom page sizes and margins while others have only standard page sizes 
and margins from which to choose. If you choose a standard format, you may 
lose part of your image (due to imageable area constraints). If you can cus-
tom-size your page in your application, use those sizes given for the imagea-
ble area for optimum results.