a good idea! thanks for that. but for homeuse it should usually work without that big efforts. My routine is: Take the picture, "run" to the cupboard and put it in a drawer where it's safe and warm. (+/- 21° Celsius)
That is actually enough to get good results.
Oh, btw: there's no need to totally cover the photo, it's enough to just put it in a dark drawer.
But if that's not the case with you, there might be something wrong with your equipment...