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5-4 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, or media jams. Take action 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 print heater was
hot?
Loading media after the print heater has warmed up causes
the temperature of the media to rise suddenly, which may
cause the media to shrink or wrinkle during printing. Be-
fore loading media, switch off the sub power and allow the
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. 39, "Settings for the Media Heating System"
Is the temperature of room too low?
Use this machine in an environment having an ambient
temperature of 20 to 32ºC (68 to 90ºF). If the machine is
used at an ambient temperature less than 20ºC, then de-
pending on the type or width of the media, wrinkling or
temperature-caused unevenness may occur. If this happens,
try lowering the temperature of the media heating system
by about 2ºC.
To obtain stable printing results, however, the machine
should be used at an ambient temperature of 20 to 32ºC(68
to 90ºF).
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.
120
Chapter 5 What to Do If
Media Feed Is Not Smooth
Do the media or the shafts strike some other ob-
ject?
Make sure the media and the shafts do not touch anything
else. This may affect output, even when feed appears to be
smooth.
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.
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