Davin J012, Service Manual

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Ink
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. .
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.
6. Detailed Section Descriptions
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