Ricoh DDP 70 Manual Do Utilizador

Ink used in preprinting should be non-volatile and oily. Ink suitable for pre-printing is 
cured by:

n

Ultraviolet or heat (cured for 1 day)

n

Oxidative polymerization (cured for 7 days)

n

Ink cured by heat (Tinplate Ink)

Before using preprinted forms, make sure the ink is completely cured to prevent it from 
transferring to the printer’s rollers and contaminating the internal printer mechanism.

The following inks are not suitable for preprinting:

n

Quick set ink

n

Ink dried by evaporation

n

Cold set ink

n

Ink dried by sedimentation or deposition

n

Ink dried by penetration

Preprinting can result in paper curl. Generally, the amount of paper curl depends on 
which side of the paper is printed first. 

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information.