White spots - places in which there is no polymer.
2 Reasons:
1. Places are not lit
File - absence of the information
Dirt in a drum - plates negative - not lit places
2. Processor - after PreHit and wetting polymer soft enough also is probability, that something clings it or scratches.
On the size of spots more similar on absence of a flare.
These spots are displaced under the form or is constant in the same places?