131
Chapter 7 What to Do If
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 head cleaning.
☞ P. 40, "Printing Tests and Cleaning"
☞ P. 66, "When Head Cleaning Is Not Effective"
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 on the computer to match
the type of media you're using, or make the setting for cor-
rection on the printer.
☞ P. 103, "Performing Feed Correction to Alleviate Hori-
zontal Bands and the Like"
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.
☞ P. 100, "Correcting for Misalignment in Bidirectional Print-
ing"
☞ P. 101, "Correcting for Misalignment in Bidirectional Print-
ing More Precisely"
Is the media heating system at a suitable tempera-
ture?
If the ink forms lumps or smudges, raise the temperature.
Note, however, that a temperature that is too high may de-
grade the media or cause it to wrinkle.
☞ P. 36, "Settings for 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 reach its preset tem-
peratures, adequate effectiveness may not be apparent if the
media is thoroughly chilled. Before printing, allow the me-
dia to come to room temperature.
Is the print mode suitable?
If attractive printing is impossible even when the media heat-
ing system is at a high temperature, try using a higher-qual-
ity 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 RIP program (such as the
color-profile selection). Make settings suited to the media
you're using.
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
7-2 Attractive Printing or Cutting Is Impossible
sure that the print heads are not exposed to moving air.
These factors may lead to missing dots or reduced printing
quality.
Is the media loaded and set up correctly?
If the media is not loaded and set up correctly, media feed
may not be smooth, or printing may be adversely affected.
☞ P. 135, "Media Wrinkles or Shrinks, or Feed Is Unstable"
Are the settings for the [PRESET] menu item ap-
propriate?
If the settings selected with the [PRESET] menu item are not
suitable for the type of media, printing may be adversely
affected. Choose settings optimized to the media you're us-
ing.
☞ P. 114, "Saving Optimized Media Settings As Preset Val-
ues"
☞ P. 116, "Loading a Saved Preset"
Colors Are Unstable or Uneven
Is the media wrinkled?
If the media is wrinkled and comes loose from the platen,
colors may be uneven or printing reduce may suffer.
☞ P. 135, "Media Wrinkles or Shrinks, or Feed Is Unstable"
Did you shake the ink cartridges gently before in-
stalling them?
Before you install a new ink cartridge, gently shake the car-
tridge.
Was printing paused partway through?
When printing is paused, the coloring at the seam may be
altered when printing resumes. Avoid pausing printing. By
default, printing pauses when ink remaining inside the ma-
chine runs out. Before you perform lengthy printing, check
the amount of ink remaining in the ink cartridges.
Printing may also pause when data is not sent from the com-
puter quickly enough.
Are the operating parameters set to appropriate
values?
Depending on the settings for such menu items as [FULL
WIDTH S] and [PERIODIC CL.], uneven colors may occur.
If the settings have been changed, try restoring them to their
default values.
☞ P. 88, "Speeding Up Printing for Narrow Media"
☞ P. 88, "Keeping Media from Being Soiled by Ink Drops"
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, ensure
that the printing heads are not exposed to wind or blown
air. These factors may lead to missing dots or reduced print-
ing quality.
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