Right-click the icon and select Printing Preferences .

: For specialized label design software, the BarTender Driver Portal offers "Drivers by Seagull," which are high-performance Windows drivers often used for industrial labeling. Installation Steps

A: Only if downloaded from citizen-systems.com. A .exe installer is easier than manual INF installation. Run it as Administrator.

Under the or Options tab, adjust the darkness/density and print speed. Higher density creates darker prints but may require slower speeds depending on your thermal paper quality. Click Apply and print a test page to verify configuration. Troubleshooting Common Installation Errors

Windows XP, 2003, Vista, Server 2008, Windows 7, Windows 8, and Windows 10/11.

: Click finish and restart your computer to apply the changes. Common Configuration Tips

Accept the End-User License Agreement and follow the on-screen prompts.

If a label gets stuck in the queue and subsequent labels refuse to print, clear the Windows Spooler. Search services.msc in your Windows search bar, find Print Spooler , right-click, and select Stop . Delete the temporary files in C:\Windows\System32\spool\PRINTERS , and restart the Print Spooler.

Before starting the installation process, disconnect the printer's USB or communication cable from your computer. This prevents the operating system from attempting to install a generic plug-and-play driver automatically. Method 1: Using the Executable Installer (Recommended)

For a quick reference, here are the key specifications of the Citizen CL-S621: