Why Choose SinoColor SJ-640i Vinyl Printer? DX-7 micro piezo print technology DX-7 print head with micro piezo print technology can show not only the excellent printing quality, but also the durability to the Eco-solvent inks. DX-7 print head has a longer and more durable working life. The improvement of printing precision makes the ink droplets smaller, and the stability is better than that of DX-5 print head. Comprehensive media handling The standard media handling includes the automatic feeding & take-up system that can load up as heavy as 200kgs. The heating system and hot air drying system which can now easily print on flex banner and diversify medias. Auto Cleaning and Auto Capping System. Auto Anti-Clog Flash. Advanced Media Auto Feeding System. Impressive High Speed & Quality. Long Life-Span. Trouble-Free Warranty. Removable, Safe and Economical for Transportation.