Attractive Printing Or Cutting Is Impossible; Printed Results Are Coarse Or Contain Horizontal Stripes - Roland TrueVIS VG-640 User Manual

Attractive Printing or Cutting Is Impossible

Printed Results Are Coarse or Contain Horizontal Stripes

Do the print heads show dot
drop-out?
Is the print head height ap-
propriate?
Have you carried out feed
correction?
Have you carried out bidirec-
tional correction?
Is the printer installed in a
level and stable location?
Is the media heating system
6
at a suitable temperature?
Is the temperature of the
room too low?
172
Carry out a printing test and make sure no dot drop-out occurs.
If dot drop-out is present, perform cleaning of the print heads.
P. 54 "Step 5 : Printing Tests and Normal Cleaning"
P. 85 "When Normal Cleaning Is Not Effective"
Printing when the [HEAD HEIGHT] menu item is set to "HIGH" is
coarser than when set to "LOW." Keep this set to "LOW" except
when changing it is necessary, such as when you are using thick
media.
P. 128 "Adjusting Print Head Height to Match Media Thickness"
Large misalignment in the amount of feed of the media may result
in printing that seems coarse or contains horizontal stripes. Either
make the setting in the software RIP to match the type of media
you are using, or make the setting for correction on the printer.
P. 126 "Alleviating Horizontal Bands (Feed Correction Function)"
When you are performing bidirectional printing, use the [ADJUST
BI-DIR] menu item to carry out correction. The optimal adjustment
value may vary, depending mainly on the thickness of the media.
Set or select an adjustment value that is suited to the media.
When further correction is required, such as when adjustment
made using [SIMPLE SETTING] does not enhance printing, use
[DETAIL SETTING] to make the correction.
P. 124 "Correcting for Misalignment in Bidirectional Printing"
P. 125 "Correcting for Misalignment in Bidirectional Printing More Precisely"
Never install the machine in a location where it is tilted or where
it may wobble or experience vibration. Also make sure that the
print heads are not exposed to moving air. These factors may lead
to dot drop-out or reduced printing quality.
If the ink forms lumps or smudges, raise the temperature. Note,
however, that a temperature that is too high may degrade the
media or cause it to wrinkle.
P. 117 "Settings for the Media Heating System"
The media heating system may not warm up sufficiently when
the ambient temperature is less than 20°C (68°F). Also, even
when the media heating system reaches its set temperatures,
adequate effectiveness may not be apparent if the media is
thoroughly chilled. Before printing, allow the media to come to
room temperature.