Davin J012, Service Manual

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Four dots are required to form a large drop but only one is sufficient for a small drop. The four dots for a
large drop are ejected very quickly as they form one dot before they reach the surface of the paper. The
4th dot in this case is ejected extremely fast under high pressure (1 Mega Pascal).
1. Dual Tank System
A dual tank arrangement means no waste of liquid gel (ink). The ink is stored at two locations, in the
print cartridge and in a tank in the print head. When the level of the ink in the print head drops below
a prescribed level, the tank will be refilled. The ink is vacuum fed from the print cartridge, into the print
head ink tank, then to the print head nozzles. Vacuum feeding guarantees that a print cartridge is
completely empty when the machine signals ink end. When a print cartridge needs to be replaced,
it is completely empty.
Belt Transfer System
The machine employs an electrostatic transfer belt system to hold the paper in place during printing. The
strong electrostatic charge on the belt holds the paper tightly to the surface of the belt as the paper is fed
below the print heads that move above the surface of the paper. This system positions the paper more
efficiently than a roller system and holds it in place. The printer can print over a wider area, the margins at
Ink
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