Compuprint 9058 Programmer Manual - Manual (Page 35)

EPSON/IBM Mode
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ESC E
Sets emphasized printing. (IBM, EPSON)
ASCII Code ESC E
Hexadecimal Value 1B 45
Decimal Value 27 69
This command starts emphasized printing. The print head strikes each
dot twice to produce a darker, bolder character. The second strike is offset
horizontally.
ESC F
Cancels emphasized printing. (IBM, EPSON)
ASCII Code ESC F
Hexadecimal Value 1B 46
Decimal Value 27 70
This command ends emphasized printing. This escape sequence cancels
emphasized printing that was set by ESC E.
ESC G
Sets double strike printing. (IBM, EPSON)
ASCII Code ESC G
Hexadecimal Value 1B 47
Decimal Value 27 71
This command starts double-strike printing. ESC G must be canceled by
ESC H.