Printed Results Are Coarse Or Contain Horizontal Stripes; Do The Print Heads Cause Dot Drop-Out; Is The Print Head Height Appropriate; Have You Carried Out Feed Correction (Calibration) - Roland TrueVIS VF2-640 User Manual

Printed Results Are Coarse or Contain Horizontal
Stripes

Do the print heads cause dot drop-out?

Carry out a printing test and make sure no dot drop-out or dot displacement occurs. If dot drop-out or dot dis-
placement is present, perform head cleaning.
RELATED LINKS
・ P. 53 "Printing Tests and Normal Cleaning"
・ P. 135 "When Normal Cleaning Is Not Effective"

Is the print head height appropriate?

Printing when the [HEAD HEIGHT] menu item is set to "HIGH" or to "MIDDLE" 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.
RELATED LINKS
・ P. 74 "Changing the Print Head Height"

Have you carried out feed correction (calibration)?

Large misalignment in the amount of feed of the media may result in printing that seems coarse or contains hori-
zontal 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.
RELATED LINKS
・ P. 72 "Reducing Horizontal Bands (Feed Correction Function)"

Have you carried out correction of the ink landing position (MEDIA GAP ADJ.)?

The optimal adjustment value varies depending on the thickness of the media. Set an adjustment value that is
suitable for the media. When further correction is required, such as when adjustment made using [SIMPLE SET-
TING] does not enhance printing, use [DETAIL SETTING] to make the correction.
RELATED LINKS
・ P. 69 "Adjusting the Misalignment of the Ink Landing Position"
・ P. 70 "Accurately Adjusting the Misalignment of the Ink Landing Position"

Is the printer installed in a level and stable location?

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 print-
ing quality.

Is the media heating system at a suitable temperature?

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.
RELATED LINKS
・ P. 84 "Setting the Print Heater Temperature"
・ P. 85 "Setting the Dryer Temperature"
170
1. Output Quality Problems