For a given load:

Increase in supply voltage results in increase in  armature drop. Increase in armature drop results in higher armature current. But we know that increase in armature current reduces speed. We also know that increase in supply voltage increases speed. What am I missing here?


Edit: An answer that I saw to a similar question said that the voltage difference between the supply voltage and the back emf is dropped across the armature resistance.

Now the above scenario would cause a flow of current through the armature, which produces the magnetic field required for rotation. So stronger the field, faster the rotation. 
But it is known that increase in armature current is a result of reduced speed.

Edited to make the question clear as to what I'm asking