Ricoh DDP 92, DDP 70e manual Ink Recommendations, Paper Curl in Preprinted Paper

Ink Recommendations

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

Ultraviolet or heat (cured for 1 day)

nOxidative polymerization (cured for 7 days)

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:

Quick set ink

Ink dried by evaporation

Cold set ink

nInk dried by sedimentation or deposition Ink dried by penetration

NOTE:

Preprinted paper should still meet the paper specifications after the preprinting process is complete.

Paper Curl in Preprinted Paper

Preprinting can result in paper curl. Generally, the amount of paper curl depends on which side of the paper is printed first. Refer to “Paper Curl” on page C-6for more information.

Paper Specifications C-9