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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, misaligned positioning, or media jams. Take
action as follows.
Media Wrinkles or Shrinks
Is the media loaded and set up straight and se-
curely?
Feed is not smooth when the media is not straight or is ten-
sioned 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 remove
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. Before 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. 38, "Settings for the Media Heating System"
Is the temperature of room too low?
Use this machine in an environment having an ambient tem-
perature of 20 to 32°C (68 to 90°F). If the machine is used at an
ambient temperature less than 20°C, then depending on the
type or width of the media, wrinkling or temperature-caused
unevenness may occur. If this happens, try lowering the tem-
perature of the media heating system by about 2°C.
To obtain stable printing results, however, the machine should
be used at an ambient temperature of 20 to 32°C(68 to 90°F).
Media Feed Is Not Straight
Is the media loaded and set up straight and se-
curely?
Feed is not smooth when the media is not straight or is ten-
sioned unevenly on the left and right. Reload the media.
104
Chapter 5 What to Do If
Are the media holders securely fastened in place?
If the retaining screws for the media holders are not tightened
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
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 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 remove
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.
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