Oce Arizona T220 User Manual page 61

Situation
Avoid Printing Large
White Space Areas
Imaging on a new
media
Imaging off the
media
Additional drying,
printing uni-
directional vs. home/
away carriage
delays.
10/16/03
Recommendation
Do not add white space to an image to center it on the media,
instead use the center media option in the PosterShop Layout
Preview dialog to center the image. Adding white space to the
image increases the print time and may dry out the nozzles
resulting in over-spray and banding. Turning on the regular
stripe on the away side of the image, will help prevent the
nozzles from over-spraying.
When imaging on a new media for the first time (i.e., you do not
have a media model for the media), we recommend that you
guess at an appropriate ink restriction level and heater duty
cycle. Then print either a test image or the job to be printed prior
to doing linearization. Once reasonable ink restriction values
and heater duty cycles are selected, linearization and ICC
profiling can be done, if required.
If anything is printed off the media (e.g., diagnostic stipe or a
bleed) use a sacrificial scrap piece of media - either the same
height or up to 1 mm less. Failing to do so causes ink to
accumulate on the nozzle plate and banding and over-spray.
In general, it is better to print uni-directional instead of adding
home and away carriage delays.
Reasons: drying uniformity, speed and image quality.
Drying: unidirectional printing has uniform drying while the ends
of a bidirectional print always have less drying time than the
middle of the print in the carriage direction.
Speed: the carriage prints at 34"/sec and retracts at 40"/sec
when printing unidirectional. This means that for a 40" print a
home/away delay totaling more than a second would be slower
than printing unidirectional. Image quality is better with uni-
directional as no bi-directional alignment is required.
Application Hints and Tips |
3-49