[mingjkli]

作者: lypsky

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 s...

You can take notice of the shape of those white spots, it's so clear that it is a water drop and made this form after the pressure of rollers. It should be some water drops in pr-heat section.