Q: Can I use a 'pc' network printer connected via ethernet to the home wifi network ?

Can I use a 'pc' network printer connected via ethernet to the home wifi network ?

or must the printer I want to use also have a wifi connection ?

I have a home network using ethernet connected devices to a router, also attached to th erouter is a WiFi unit. We are using the WiFi unit to connect to the network and hence to the big wide WWW.  We now want to print from our IPads pereferable to our netowk connected HP Officejet Pro 8500 A909a series. (not the wireless model).

I was using the HP ePrint app to print from the Ipad, but I do not fully understand how this works. It seems that you must use the app to do the printing which is fine for basic email and photos, but I can not access the drawing package I have, and want to print from it. Please what is it that I do not understand.