Black Mark Position Control Instruction of 76mm Thermal Printer

1、Printing mechanism and printing control relevant parameters

(1) From the print head of printing mechanism to the printer  head tear paper line position is 22 mm.

(2) From the print head of printing mechanism to the  black mark detection switch is 28 mm.

2、Black mark printing note

(1) Black Label must be printed on the front right side of  receipt

(2) The black mark printing size should be: 8 (W) X5 (H) mm.

(3) The blackness of the black mark should be sufficiently saturated, reflectivity <10 % ; the other parts of the black mark printed the whiteness  should be sufficient, reflectivity > 75% .

3、Black mark positioning

The institution supports the pre-printed positioning printing with black mark paper printing.

(1) Black mark positioning control selection

Select DIP SW-1 “ON” and set GS (F command correctly and then select black mark positioning printer

(2) Black mark detection position

Black mark is on front right side of receipt. The relationship among the black mark detection switch position, the print starting position and tear paper line position is shown as below. The printer detects the black mark position is in the forefront of the black mark to black mark detection switch center position approximately  2 mm.