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Chapter 4 Other Information
4.1 Printer Developing Guide
<T6 Technical Manual> is a technical manual for engineer to
develop printer utility, and users can claim our company for it.
This manual including the technical description of hardware
interface(serial port communication, Bluetooth, USB
interface),technical documentation of printing control
instruction set, and others such as how to print black mark
and locate by it.
4.2 Description of Black Mark Pre-print
If user use pre-print black mark to locate the receipt, please
be sure to abide by the following black mark pre-print
regulation when print the black mark, if not, it will cause that
the printer can not identify the black mark. The black mark
pre-print regulations are as below:
