Dot Gain Rendering

Rollers and pressures are improperly set

Reset rollers and pressures

Rollers or blankets are too soft

Condition or replace rollers or blankets

Ink is low in viscosity and/or tack

Consult your Sun Chemical representative

Ink is too receptive to water; over emulsified; incompatible

Consult your Sun Chemical representative

Ink is not strong enough; ink film is too heavy

Consult your Sun Chemical representative

Blankets are packed improperly or too much impression pressure exists

Check packing and pressure

Ink is piling

Consult piling section of this guide

Plate is poorly desensitized

Consult your pre-press department

Plate is improperly exposed and developed

Consult your pre-press department

Dampening system is dirty

Clean the dampening system

Fountain solution pH or conductivity is out of balance

Adjust pH and conductivity to manufacturer’s specifications

Slurring or doubling appears in half-tone

Check cylinder pressures, blanket tension, and roller slippage. Check mechanical operation of unit