Did you install any software when you hooked up your printer? There are often settings included that affect output. Even if you don't recall installing software, try to print something and check the middle drop down menu in the final dialogue confirmation window.
You will often find semi-default modes such as "draft" or "faster printing" which equate to less ink output. My HP has settings to directly alter ink output ("less ink") as well as indirectly (via "saturation" and "vibrancy" settings).
I would be hard pressed to believe there are no settings for quality of print or output, dig around in your print options.