Black Mark Sensing Commands - Printek MtP Series Programmer's Manual

Black Mark Sensing Commands

Set Paper Out Sensitivity
This command sets the number of 0.125mm dot rows of paper motion that can occur after the paper out sensor
detects the lack of paper before a paper out condition is displayed and the printer stops printing. Using this
command to set a number of dot rows larger than the vertical size of the black mark, which looks like a lack of
paper, allows the printer to continue operating in the area of the black mark. 0 ≤ n ≤ 255, the default value is
40.
Example: The following escape sequence will set the paper out sensitivity to 50 dot rows.
Escape Sequence ESC
Hexadecimal 1B
Forward Seek Black Mark
This command causes the printer to move the paper forward up to n dot rows to seek the beginning of a black
mark on a form where 0 ≤ n ≤ 255 0.250mm dot rows. If the black mark is found, the printer responds with the
escape sequence ESC Q ? ? n1 n2 where n1 n2 represent the number of dot rows the paper was moved before
the black mark was detected. If the black mark is not found, the printer responds with ESC Q 0 0 n1 n2 where
n1 n2 represent the number of dot rows moved before the seek was aborted.
Example: The following escape sequence commands the printer to move the paper forward up to 200 * 0.250
mm dot rows in search of a black mark on the form. This example also shows the printer's response that it
found the beginning of the black mark in 183 dot rows.
Tear edge.
Black Mark should span width
of paper for best results.
Front (thermal printed) side of
form.
Optimum Black Mark Position
Q Q 50
51 51 32
Printek Emulation
0.9"
0.15"
ESC Q Q n
ESC Q F n
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