Chapter 4 Other Information
4.1 Command Programming Manual
<T9 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 ( Bluetooth, USB interface ), technical documentation of printing control command 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 paper, if not ,it will cause that the
printer can not identify the black mark.
The black mark pre-print regulations are as below:
Printing Position: As the picture above, the black mark should be printed on the right or left
edge of the side of words.
Width range: width≥7mm
Height range: 4mm≤height≤6mm
Reflectivity of infrared ray : <10% (infrared ray reflectivity of other parts of the black mark
