printer busy message but it's not

Hi, I have an HP Photosmart Ink Advantage eAll In One Printer K510.

The problem is that I can't print anything as I always get a printer busy message in the printer queue page.

The printer is connected wirelessly to my iMac. I ran the wireless protocal to the printer and it works fine. Also, I have reset my printer network.

Also, when I added the printer after resetting the network, I noticed that there was a notice that there was a 'bonjour error'. I can't find bonjour in my applications list, but I do remember installing it about a year ago.

Can someone give me some tips on how to solve this problem?

Thanks in advance.

Martin Whetter