Trouble
Cause
Solution
 Shadow appears in the printed area.
 

INK

The more transparent the ink in solid printing is, the more clearly the shadow appears.

Poor fluidity of ink due to emulsification


 

Use ink with high opacity for solid printing.

Add 3-5% more varnish to improve fluidity of ink.

  PRESS

Imbalance of ink consumption due to too much distribution of dampening water.

Imbalance of ink consumption due to layout of images.

Inadequate adjustment of oscillation roller or vibrating roller.


 

Reduce dampening water as little as possible.

Change the layout of images if possible.

Put some solid area in the surrounding bleed of the rest sheet to counteract ghost.

Adjust the oscillation of rider roller or vibrating roller.

 

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