Additional characters are prefixed to String when printing Barcode about bluetooth_print

[vicenterusso]

+1

This also happens to me. My print model:

Specifications:
Model: POS-5802DD
Printing Method: Direct Thermal
Speed: =<90mm/sec
Resolution: 203dpi(8dot/mm)
Paper Type: Thermal Paper
Paper Width: 58mm(+-0.1mm)
Printing Width: 40mm(384dot)
Roll Diameter: =<40mm
Reliability TPH Life: 100km
BT Version: 4.0 & 3.0
Character size: 384dots/line
Font A: 12 * 24dots, 1.5(W) * 3.0(H)mm
Font B: 9 17dots, 1.1(W) 2.1(H)mm
Simplified/Traditional: 24 * 24dots, 3.0(W)*3.0(H)
Extended Character: OEM437/Katakana/OEM850/OEM860/OEM863/OEM865/West Europe/Greek/Hebrew/East Europe/Iran/WPC1252/OEM866/OEM852/OEM858/Iran II/Latvian/Arabic/PT151,1251/OEM747/WPC1257/Vietnam/OEM864/Hebrew/WPC1255/Thai
Print Parameters: Support to download trademark, support bar-code print.
Support Bar Code Type: UPC-A/UPC-E/JAN13(EAN13)/JAN8(EAN8)/CODE39/ITF/CODABAR/CODE93/CODE128;Two-Dimensional Cord: QR Code
Emulation: ESC/POS/STAR Command
Interface: USB/Serial/Power Port
Driver: For Win2003/Win2000/Win7/Win XP/VISTA/Win8/Win10/LINUX
Battery: 7.4V 1500mAh 11.1Wh (Included)
AC Input: 100 ~ 240V 50/60Hz 0.5A max.
Output: DC 9V/1.5A

[nicolasvahidzein]

I am also having this problem, can you please help us solve this?

[nicolasvahidzein]

this is my model:
https://www.amazon.fr/ZHANGJIALI-Imprimantes-r%C3%A9ception-imprimante-Imprimante/dp/B086SBS6BN/ref=sr_1_12?__mk_fr_FR=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=mini+thermal+printer&qid=1606090664&sr=8-12