ENCAD NovaJet 800 Series Service Manual page 157

Figure 4-61. Excessive Ink PreHeat Settings.
The preheat settings are factory set to default settings of 0 (zero) and are
dependent upon the installed ink set. These settings are to aid in the
minimization of ghosting and or ink density issues. The preset heater
settings in conjunction with the ambient or surrounding temperature could
be causing the cartridge to get too hot. This could cause the ink to boil
inside the jetplate and create air bubbles. Air bubbles in the ink will result
in ink starvation and dropout problems. Excessive heat also causes the
viscosity to reduce (gets thinner) which can create pooling or puddling on
the jetplate. This in turn can result in random spitting and burping due to
excessive accumulation of ink on the jet plate.
The following preheat settings are recommended for each stall position to
prevent ink starvation and dropout from occurring.
Yellow (Y)
Magenta (M)
Cyan (C)
Black (K)
1
2
3
4
NovaJet 800 Series Service Manual
0 - default setting
0 - default setting
0 - default setting
0 - default setting
0 - default setting
0 - default setting
0 - default setting
0 - default setting
Troubleshooting 4-58