Epson Stylus Pro 7450 User Manual page 88

❏ Retain Size
Using an application, enlarge your image data to exceed the
paper width and height, to avoid unprinted areas appearing
along the all four edges. The printer driver does not enlarge
the image data. Enlarging 3 mm in both the left and right
directions (total of 6 mm) is recommended by using the
application that created the data.
Select this setting if you do not want to change the ratio of
your print data by the printer driver.
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Variety of Printings