Oce Arizona T220UV User Manual - page 79
Application Hints and Tips |
6/2/04
3-67
Thermal Expansion
of Media
Some media, such as Styrene, Fome-Cor, or plexiglass, is
subject to expansion when subjected to heat.
If multiple pieces of these media are used, allow enough space
between the pieces to allow for thermal expansion. Placing tape
on the table prior to laying down the media will prevent ink from
being imaged onto the table.
When overprinting on media that will expand when heat is
applied, we recommend that you group the desired image with a
preceding image so the printer is a consistent temperature when
starting to print the desired image.
Note that color-to-color registration may be affected if the media
expands significantly between printing the first and last colors.
Using a generic ICC
Profile
If an ICC profile is not available for a particular media and it is
not possible/convenient to create one specifically for that media,
determine the ink restriction values required to achieve Dmax for
that media. Then select an ICC profile for another media that
uses the same ink restriction values and has similar dot gain
characteristics and the result may be satisfactory.
Imaging on Fome-
Cor
Fome-Cor has a tendency to warp when heat is applied.
However it will go back to it’s original shape once cooled.
Media Holder Strips (aluminium bars) with a 45 degree chamfer
are available to hold down the Fome-Cor. The bars are 2” wide
and 32” long.
Imaging on
Coreplast - avoiding
warping
When imaging on Coreplast set Full Carriage Travel to On in the
Operator/Maintenance/Print. This reduces the tendency of the
media to turn warp near the outer edges from excessive heat
generated by the UV lamps. By having it travel beyond the edge
of the media during each swath there is less concentration of
heat from the UV light during the time the carriage changes
direction. Also consider lower the power level of the UV lamps.
The power level must be set only high enough to cure the ink.
Situation
Recommendation