I recently replaced both my ink cartridges on my Deskjet 3050A. It had previously printed perfectly for the last 2 years. I've checked that they are the correct HP genuine cartridges purchased from HP.
I am running Macbook Pro with OS X Yosemite version 10.10.5 and connecting wirelessly.
Please can anyone help because this is so frustrating?
Many thanks in advance.
Martin