Canon 1670F Printer Manual page 77

Overlay Placement
Print results may differ depending on the placement of the overlay and application print data
(Background/Foreground). When the overlay and application print data (original data)
overlap, the print result may differ depending on the overlay file format and the application
being used. Settings for overlay printing of your machine allow you to place the overlay form
in the foreground (in front) or in the background (in back) of the application print data.
Original data
Overlay Application
[Overlay Placement: Background]
The result will appear similar to one of those shown below.
ABC
[Overlay Placement: Foreground]
Using Windows Metafile
The result will appear similar to one of those shown below.
ABC
ABC
ABC ABC
ABC ABC
Using Windows BMP
The result will always be as shown below.
ABC
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