ITherm® 280 Unicode and Fonts iTherm
®
280 Programmer’s Guide
Page 272 Rev C 28-07764
ASCII [ESC] + M
Hexadecimal 1BH 2BH 4DH
Decimal <27> <43> <77>
Description The [ESC] + M command will put the printer into UTF-8 character encoding mode
of operation. If you wish to access characters above 255, You must select a
Unicode encoding such as UTF-8.
UTF-8 uses a Multiple Byte Character Sequence (MBCS) to identify the desired
Unicode character. This encoding method is less straightforward. This method
uses unique bit sequences at the MSBs of a byte to determine its location and
meaning within the MBCS encoding. See the table below for more information.
Once selected, all information sent to the printer must then use this encoding,
even for non-print commands.
Scalar Value 1
Byte 2nd Byte 3rd Byte
000000000xxxxxxx 0xxxxxxx
00000yyyyyxxxxxx 110yyyyy 10xxxxxx
zzzzyyyyyyxxxxxx 1110zzzz 10yyyyyy 10xxxxxx
Function Initiate Unicode UTF-8 Text only Encoding (MBCS) All
ASCII [ESC] + T
Hexadecimal 1BH 2BH 54H
Decimal <27> <43> <84>
Description The [ESC] + T command will put the printer into UTF-8 Text only character
encoding mode of operation. This mode is identical to the UTF-8 mode
described above, except commands and there parameters are not UTF encoded.
For example the following command would be used to select underline on:
[ESC] W 128.
If true UTF-8 encoding were in effect, the 128 parameter would be UTF encoded
to [ESC] W 194 128. With UTF-8 Text only mode this command is simply [ESC]
W 128.
This command also applies
to graphic data being sent to the printer. The graphic
data is a command and not text. It is not UTF-8 encoded.
Function Initiate Normal 8-bit ASCII Character Encoding All
ASCII [ESC] + A
Hexadecimal 1BH 2BH 41H
Decimal <27> <43> <65>
Description The [ESC] + A command will put the printer into normal character encoding mode
of operation. One byte = one character. In this mode international characters
must be selected by selecting the appropriate code page for translation.
