Epson 8900 Series - Manual (Page 121)

TI Model 855 Printer DP Emulation 6-8
Select Unidirectional Printing
Escape sequence: ESC u
Hexadecimal: 1B 75
This command causes the printer to print subsequent characters in
the forward (left-to-right) direction only.
Cancel Unidirectional Printing
Escape sequence: ESC b
Hexadecimal: 1B 62
Set Most Significant Bit
Escape sequence: ESC >
Hexadecimal: 1B 3E
This command sets the most significant bit of all received characters
to one. This allows a host that can send only 7-bit data to access the
GR side of an 8-bit character set.
Reset Most Significant Bit
Escape sequence: ESC =
Hexadecimal: 1B 3D
Form Format and Font Selection Commands
The form format commands let you select and set some form-related
parameters. The font selection command lets you choose between the
two standard fonts and any installed optional fonts.
The standard fonts for the Model 8900 Series Printer are Courier and
Gothic. Residing in printer ROM, these fonts can be selected via the
control panel or by the host computer. Optional fonts include Prestige
Elite and Presentor. These optional fonts are available as ROMs that
plug into sockets on the printer logic board. When installed, these
fonts can also be selected via the control panel or by the host computer.