Bar code scan quality is insufficient.
Color. Make sure you are printing bar codes in true black. This means both the image on screen and the cartridge printing the bar codes should be black. Set the cartridge setting in the printer driver to Color + Black. If the bar code is true black on screen (color value #000000), the driver will print the bar code with the the black cartridge only. Bar codes printed in any color but black may result in poor scanning quality.
Print Quality. Adjusting print quality settings can improve bar code scan quality. See this article for more information. Often scan quality will improve if you decrease your quality setting in the printer driver.
Compensation. The LX800/810 driver defaults to optimal values to provide the best possible bar code scan for most bar codes, quality settings and label stock. However, certain label stock - bar code - quality setting combinations may require that you slightly adjust these values.
You may edit the following file for this purpose:
C:\WINDOWS\system32\spool\drivers\w32x86\3\pt_label.ini -or-C:\Documents and Settings\All Users\Application Data\PTI\Drivers\Color Label 810 (Use this location if you are using the most updated driver version)You will need to browse to this file and open it in a text editor such as WordPad. Find the BLOOM COMPENSATION section.
; BLOOM COMPENSATION ; #Black pixels to remove BloomComp = 2 (default)
Increase the BloomComp value to remove more pixels - Decrease to add pixels. Typically you will need to increase the value but you may have to experiment with this setting.
Save the file when you are finished.