DSF

after finally getting close to my perfect mugs in the halogen oven i just need a little advice.
im doing a few with images and text on, the photos are coming out ok but could do with being a little bit darker, would this be more time or higher temp in the oven? im currently running it at 200c for 15-17 min...

Many years ago I had a couple of ovens and tended to find 4 mugs would need 20-25 mins to cook.

If you are doing 4 at a time, yes you will need around 20 minutes..