Oce CS 5090 User Manual page 134

Ghosting (parasitic suppression)
The temperature of the print cartridge affects the size of the dots it prints (the
warmer the cartridge, the larger the produced dots). Several factors may affect
the temperature of a cartridge such as the ambient temperature, the number of
dots recently printed or the cartridge heater circuit. This change of temperature
causes what is called 'ghosting' (also known as 'parasitic suppression').
Ghosting may occur when selecting unidirectional printing, if the image [1]
contains a white area [2]. The cartridge cools down when not printing this
empty area and a light area [3] may appear next to the non-printed area. This
light area is ghosting.
Use the cartridge heaters to warm the cartridge for these non-printed areas and
you will minimize this phenomenon.
[46] Ghosting
M
To avoid ghosting
Increase the preheat setting on all cartridges (see 'Select ink preheat' on
1
page 89)
Set the carriage speed to 5 or lower (Setup/Print mode/Carriage speed/5/OK)
2
Set the printer in the bi-directional mode (Setup/Print mode/Print
3
direction/BI/OK)
134 Océ CS 5090 User Manual