Attractive Printing Is Impossible; Printed Results Are Coarse Or Contain Horizontal Stripes - Roland Soljet EJ-640 User Manual

Attractive Printing Is Impossible

Printed Results Are Coarse or Contain Horizontal Stripes

Do the print heads show dot drop-out?
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. 40, "Printing Tests and Normal Cleaning", P. 56, "When Normal Cleaning Is Not Effective"
Are the settings for the [PRESET] menu item appropriate?
If the settings selected with the [PRESET] menu item are not suitable for the type of media, the printing results
will be adversely affected. Choose settings optimized to the media you are using.
 P. 32, "Setup of Media ([MEDIA SETTING] Menu)", P. 82, "Fully Utilizing the Preset Function"
Have you carried out bidirectional correction?
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. 91, "Correcting for Misalignment in Bidirectional Printing", P. 91, "Correcting for Misalignment in Bidirectional
Printing More Precisely"
Have you carried out feed correction?
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. 92, "Alleviating Horizontal Bands (Feed Correction Function)"
Is the print head height appropriate?
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. 95, "Adjusting Print Head Height to Match Media Thickness"
Is the media heating system at a suitable temperature?
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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. 85, "Fully Utilizing the Media Heating System"
Is the temperature of the room too low?
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.
Is the print mode suitable?
If attractive printing is impossible even when the media heating system is at a high temperature, try using a
higher-quality print mode. Depending on the media, smudging may occur when using a high-quality print
mode, and results may also vary greatly depending on the settings of your software RIP (such as the color-
profile selection). Make settings suited to the media you are using.
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