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6-5 Media Wrinkles or Shrinks, or Feed Is Unstable
A variety of problems can occur if the media feed is not
smooth. This can cause such problems as poor printing
quality, contact with the media by the print heads, mis-
aligned positioning, media jams, or poor take-up. Take ac-
tion as follows.
Media Wrinkles or Shrinks
Is the media loaded and set up straight and securely?
Feed is not smooth when the media is not straight or is
tensioned unevenly on the left and right. Reload the media.
Was loaded media allowed to stand for some time?
Media may shrink or wrinkle if it is heated for an extended
time. When printing ends, switch off the sub power or re-
move the media.
Are the media clamps mounted?
When you're performing printing, be sure to attach the
media clamps.
Was the media loaded while the apron and platen
were at high temperatures?
Loading media while the apron and platen are heated may
cause shrinkage or wrinkling during printing due to sudden
warming. Before loading media, switch off the sub power
and allow the apron and platen to cool.
Is the temperature of the media heating system too
high?
Set the temperature to suitable values for the type of media.
P. 34, "Settings for the Media Heating System"
Media Feed Is Not Straight
Is the media loaded and set up straight and securely?
Feed is not smooth when the media is not straight or is
tensioned unevenly on the left and right. Reload the media.
Are the media holders securely fastened in place?
If the retaining screws for the media holders are not tight-
ened securely, the roll may become unstable, impeding
smooth media feed. Firmly tighten the retaining screws so
that the media holders do not move.
Media Feed Is Not Smooth
Does the media strike some other object?
Make sure the media does not touch anything else. This
may affect printing, even when feed appears to be smooth.
Was loaded media allowed to stand for some time?
Media may stick to the platen if it is heated for an extended
time. When printing ends, switch off the sub power or re-
move the media.
Is the media too thick?
Media that is too thick may not only cause unstable feed,
but may scrape the print heads, resulting in malfunction.
Never use such media.
Are the grit rollers dirty?
Check to make sure the grit rollers are free of buildup of
foreign material such as media scraps.
Chapter 6 What to Do If
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