aftermarket ink

I have Epson printer Workforce Pro wf-5620dwf. I'm using aftermarket compatible cartridges. After nagging for ages about the cyan ink cartridge being empty or nearly empty, eventually it has decided it is completely empty. It allowed printing in black and white only for a while, before now...

Hi: I am interested in buying an Hp officejet pro x551dw. For many years I have used an officejet pro K8600dn and k5400dn. We originally bought 4 gallons of ink and have finally used up the gallon of black. We print heavy volumes. The only problem we have had is replacing printheads every...