MIMAKI JV33-130, Operation Manual

Page: 75 / 202

Changing the set value of Heater
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In case the heater temperature is too low
When solvent ink is used, this may result in printing failures such as beading or banding if the heater tem-
perature or the ink acceptable amount (the ink limit) is too low.
Beading is a phenomenon that adjacent dots attract each other and join. Beading causes speckled patterns
or stripes along printing passes (banding.)
Example of beading
The area in 100% magenta looks fine. Generally, the area in 70-100% single color is easily affected by the
unevenness of media feed rate. The print shown here, free from unevenness of color in the vicinity of 100%
magenta area, signifies that media feeding has been adjusted properly.
In the blue area (100% m 100% cyan), however, speckled patterns and banding occur. This band-
ing is a result of beading. If heater temperatures are low or the ink capacity (ink limit) of the media is low, the
first dot does not solidify before the second dot lands on the media. As a result, dots bond to each other and
unevenness or banding occurs.
In order to avoid beading, it is recommended to raise the heater temperatures, to raise the ink capacity (ink
limit) of the media, to adjust the ink volume per dot for the media, to increase the number of printing passes
and decrease the ink amount for one shot, and/or to gain time by scan wait. Change media if none of the
above-mentioned measures works to prevent beading.
Fine looking print
Print with banding