Epson 4500 - Manual (Page 261)

Commands Arranged by Topic
ESC U Turn Unidirectional Mode On/Off
Format:
ASCII code: ESC U n
Decimal:
27 85 n
Hexadecimal:
1B 55 n
Comments:
The following values can be used for n:
1:
Turns the mode on
0: Turns the mode off
Text printing is normally bidirectional. (Graphics printing is always
unidirectional.) This command moves the print head to the extreme
left (home) position; printing takes place from left to right. When this
mode is off and DIP switch 2-6 is on, multi-pass characters are
printed bi-directionally.
ESC EM
Format:
ASCII code: ESC EM n
Decimal:
27 25 n
Hexadecimal:
1B 19 n
Control Cut Sheet Feeder
Comments:
The following values can be used for n:
0: Turns mode off
4:
Turns mode on
R: Ejects a sheet. (No paper is loaded.)
The command should not be used unless the cut sheet feeder is
installed. It is ignored if any value other than
0, 4,
or R is used for n.
The cut sheet feeder mode can also be turned on and off by setting
DIP switch
1-8.
9-10 Command Summary