Epson Stylus Pro 7800 User Manual page 222

PLATEN GAP
You can adjust the distance between the print head and paper.
Normally, leave this set to STANDARD. If you find that printed
images are smeared, select WIDE. Select NARROW for printing on thin
paper, or WIDER for printing on thick paper.
THICKNESS PATTERN
You can print the paper thickness detection pattern. If you select
STANDARD in PAPER NUMBER, the pattern is not printed.
THICKNESS NUMBER
Check the paper thickness detection pattern, and then enter the
number for the print pattern with the smallest gap.
CUT METHOD
You can specify a cutting method: STANDARD, THIN PAPER, THICK
PAPER, FAST, or THICK PAPER, SLOW.
PAPER FEED ADJUST
You can set the paper feed amount. The range is -0.70 to 0.70%.
DRYING TIME
You can set the ink drying time for each print head pass. The range
is 0 to 10 seconds.
PAPER SUCTION
You can set the suction pressure used to feed the printed-paper.
Select STANDARD, -1, -2, -3, or -4.
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The Control Panel