8. What factors related to
inkjet printer ink cartridge's period of validity?
①.Please use red, yellow and cyan
well proportioned when you use color cartridge, because the rest
will be not in phase if a color is used-up.
②.It is general that more ink will be used if the dpi is high.
③.Less ink will be used for light colors, while more ink will be used for red
and cyan because they need one or more colors to be composed