The smaller the text and images, the higher the dpi required to read and scan the barcode. Determining whether to print on 203, 300 or 600 dpi depends on 3 factors that are interrelated.
Video and article on how to change the print darkness on the Zebra ZD420 and ZD620.
Watch video on how to install the serial module in the ZD421 Printer.
Advantages and Limitations of both methods.
Understanding the IP rating of a product ensures you choose a product that meets your needs, with less risk of damage to the product.
Any product can claim its ruggedness but without tests in accordance to MIL-STD-810G standards, you cannot be confident of how many times and how high it can be dropped without damaging it.
Safety is crucial for businesses that operate in potentially explosive environments. Ensure that the ATEX / IECEx approval of a product meets your hazardous area classification.