com.hp.devicemodel.TransportProxy

Thanks mate, solved my problem.. For some reason, the Printer was saying it's in use when it was not even connected and my Mac was overheating so seriously...

Just open System Preferences, Printers, look at the list of printers and find the one that is "in use" (it should give the status under the printer names) click on that printer, then click the button to open the queue and you should see a job there, click on the job, then the x at the end of the progress bar. Should do it. Did for me! Thanks Pmintz25!

Grazie Pink Panther.

Thanks to all for these posts. Had the same problem and fortunately knew to check Activity Monitor as I searched what was going on. There I was able to find the bizarre HP transport entry. Pink Panther once again nailed the problem by directing us to the rogue Hewlett Packard printer entry in printer preferences. Once I eliminated that renegade, peace restored.

Thanks PinkPanther the only thing that helped after a few hours of seacrching for solutions.

Tried Pink Panther's solution Jan 27, 2016.

Still good Mar 7, 2016.

This helped me so much, were going crazy from the noise and heat ! .. I Feared that it was something worse since it came out of nowhere. TY for the post and solution 🙂 !! BUG FIXED 🙂

PinkPathner's solution of deleting jobs in print cue worked. Thanks PinkPanther!

THANKS!!! ALOT!!!

Help! The fix did not work for me. Argh.

The process is still at 400%+.

Tried, force quitting the process. Didn't work.

Tried deleting the printers in System Preferences. Didn't work.

Tried repair permission and reboot. Nope.

Any other ideas anyone?

Thanks. Ray

You might want to start your own post since this one is from last year. A new post would be much more visible. You can link to this one.

If you haven't done so already, try resetting the printing system.

OS X Mavericks: Reset the printing system
also Yosemite

If you haven't done so already, try resetting the printing system.

Reset the printing system - OS X El Capitan

I'm late to this party but just wanted to thank you for this helpful fix! Worked perfect after spending the day trying to figure out the problem!!

Hey thanks guys. I had this problem too and my Macbook Pro was over-heating even when I shut it down and started it again.

I went into the Activity Monitor, found com.hp.devicemodel.TransportProxy and tried to quit it. I tried a couple of times and nothing worked so I went to my Printer settings and saw my HP printer was in use (even though I'm not connected because I'm currently sitting in the labour ward at my local hospital waiting for my wife to give birth) .

I deleted the printer from the list and my Macbook Pro fan stopped within a minute. Back to normal, mac has cooled down, CPU isn't 347% anymore and the battery has stopped draining at triple speed.

Thanks guys.

P.S Baby boy is fighting to get out so won't be long......

Thanks. The matter is resolved! Just deleted the last HP printer and a few old entries.

God bless