Guidelines for Using DigiPrime^® 680 for HP Indigo WS6X00 Series Digital Presses

CLEANING PROCEDURE FROM ILP 030 TO DP680

1. Use the standard cleaning procedure from HP for Michem® In-line Primer 030 with the cleaner Michem® Clean 1188 (MCL1188).
2. Remove the cleaner and replace with deionized water.
3. Reactivate the cleaning procedure.
4. Clean every roller which was in contact with Michem® In-line Primer 030 manually with hot water or IPA. Clean and remove the tray. Replace the tubes carrying the primer and thoroughly clean the valve.
5. Clean again and flush with deionized water. Make sure there is no residual Michem® In-line Primer 030 in the system.
6. Flush the system one time with DigiPrime® 680.
7. Clean the system again with water.
8. Fill the system with DigiPrime® 680.

You are now ready to run DigiPrime® 680.

Packaging

DigiPrime® is only available in boxes of 4 bottles, each bottle containing 5 liters of product.

STORAGE OF LIQUID DIGIPRIME® 680

DigiPrime® 680 is a water-based, press-ready primer. It is very stable, with a shelf life of 12 months if stored unopened at moderate temperatures above 5°C. The primer must be protected from freezing. If frozen, it is possible that grit or gels may be found in the product and it should not be used.

Primer in the In-Line Priming Unit

Quantity of Primer and Cleaning Solutions

In the in-line priming unit on the Indigo machine, there are two 7-liter tanks. One tank should be filled with 5 liters of deionized water and one should be filled with 5 liters of primer (DigiPrime® 680). Each appropriate tank should be filled with the contents of one bottle (5 liters) and not more in order to avoid any overflow in the machine.

Normally, in-line primer cleaning cycles prevent the primer from drying on the coating rollers. If the primer happens to dry and forms an insoluble film for any reason, use IPA or hot water to remove the dried primer from the coating rollers.

Primer Consumption Average

Assuming a 4 color print, consumption should be approximately 75 liters per month (~20 liters per week) of DigiPrime® 680, which is one box.

Press Settings

For successful priming of your substrate and good adhesion of the ink, it is important to follow HP recommendations about the PUW settings and to check the following parameters:

Quality Check