HeatSign Mini Portable Inkjet Printer: Your Go-To Industrial $250 ~ $800 What does the one-year warranty for the HeatSign Mini Portable Inkjet Printer cover? Core components (motherboard, screen, driver board) warranty for one year, excluding ink cartridges and other consumables. What makes the ink of the HeatSign Mini Portable Inkjet Printer fast-drying? The HeatSign Mini Portable Inkjet Printer utilizes specially formulated ink designed to the printed results are durable and often cannot be easily erased. How can I get in touch with HeatSign’s customer service for assistance with the Mini Portable Inkjet Printer? You can reach HeatSign’s customer service through the contact information provided on our website. Our dedicated team is always ready to assist you. Is this machine easy to operate? Very easy to operate, we will provide you with instructional guidance. What steps should I follow to maintain the HeatSign Mini Portable Inkjet Printer for optimal performance? Wipe the nozzle with non-woven fabric dipped in alcohol to prevent the nozzle from clogging.Always use the recommended ink cartridges to avoid any damage.