Ink; Viscous Ink (Liquid Gel); Wide Print Head - Ricoh J012 Service Manual

6.5 INK

6.5.1

VISCOUS INK (LIQUID GEL)

All four colors (Y, M, C, K) are fast drying pigment based ink suitable for high-speed simplex
and duplex printing without stains on the backs of printed sheets. Due their high viscosity,
the inks do not soak through the paper. Once the inks have dried they are resistant to the
effects of exposure to water and sunlight so they will neither smear nor fade. There are two
steps in the drying process. First, the ink quickly loses about 35% of its water content and
gelatinizes, then the ink dries. .
6.5.2

WIDE PRINT HEAD

The large print heads are 1.27 in. wide (32.3 mm). Each head has 2 lines of nozzles for each
color with 192 nozzles in each line (Total: 384 nozzles).
During 150 dpi printing only one line of nozzles eject ink as shown above. During 300 dpi
printing the nozzle ports (alternately offset as shown above) of both lines eject ink.
The printing system employs Modulation Dot Technology through a piezo electric element
that strictly controls the ink flow to form dots.
SM
CÓPIA NÃO CONTROLADA
6-35
CÓPIA NÃO CONTROLADA
Ink
J012/J013/J014