Epson SureColor T3000 User Manual page 231

When the custom media types are selected both with the printer and in the printer driver
Media Type menu, priority is given to printer driver settings.
Adjusting Settings in the Printer Driver (Mac OS X)
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From the Advanced screen, open Paper Configuration dialog and adjust settings as
desired.
See the printer driver help for more details.
Detailed adjustments can be made to user media settings using the Custom Paper
Setting option in the printer Paper menu.
Note:
Be sure to check the paper characteristics such as paper tension, ink fixating, or paper
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thickness before setting the custom paper. For the paper's characteristics, check the paper's
documentation or with your local dealer.
Test the print quality with this printer before purchasing a large amount of paper.
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If colors in printed images on the custom paper are uneven, use unidirectional printing. For
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unidirectional printing, select Printer Settings > Print Quality (Windows) or Mode (Mac
OS X) > Advanced Settings and clear the High Speed check box.
Options and Information 231