Why do HP 640C Ink videotape dry,and how to regulate that tape?

why do HP 640C Ink videotape dry,and how to regulate that cartridge

Why do HP 640C Ink videotape dry,and how to regulate that tape?

All ink spout cartridges dry out when they are not used.



The method to remedy that is to print, or if you don't want to print, run a print come first cleaning every 2-3 weeks.
it happens usually beside all cartridges ,



u can trademark it with hit , if not gonna use 4 a long time



frequent use dont facade this prob



refilling may show bad this prob mostly