Ricoh J012 Service Manual page 374

Ink
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.
J012/J013/J014
CÓPIA NÃO CONTROLADA
6-36
CÓPIA NÃO CONTROLADA
SM