Making The Optimize Enlargement Setting; (For Windows Xp And 2000 Only); Using The Printer Utilities - Epson Stylus Pro 7800 User Manual

Making the Optimize Enlargement setting (for
Windows XP and 2000 only)
Select this check box to optimize an enlargement to achieve long
poster or panoramic printing without using a particular
application. Clear this check box if text or graphics are distorted;
however, output length may be limited depending on the
application.

Using the Printer Utilities

The EPSON printer utilities let you check the current printer
status and perform printer maintenance from your screen.
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Printing with Windows