Lexmark Optra S 1250, User Manual

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135
Using Print Materials
Using
P
rint
Materials
Using Your Printer
Polyester Labels
Polyester labels are less heat sensitive than vinyl labels but are also
non-absorbing. Liners for polyester labels can be thinner, but
requirements for topcoats and printer maintenance are similar to
those for vinyl labels.
Topcoats
Topcoats for non-paper labels are generally water based or solvent
based. Care should be taken to avoid topcoats containing
chemicals that emit hazardous fumes when heated or put under
pressure. Topcoats affect the print quality and adhesion of toner to
the label (fuse grade). To prevent fuser damage, topcoats must be
able to withstand temperatures up to 212°C (414°F) and pressure
up to 25 psi for one second.
Water-based topcoats tend to be higher in electrical conductivity
than solvent-based topcoats. When using some water-based
topcoats with heavy liners, the fuse grade (how well the toner
adheres to the page) may fall below acceptable levels. Print quality
may degrade with heavier liners. Using a lighter liner may reduce
the appearance of splatter. Print quality with some water-based
topcoats may not be acceptable for all applications.
Solvent-based topcoats tend to be lower in electrical conductivity
than water-based topcoats. When using some solvent-based
topcoats with heavy liners, fuse grade may fall within acceptable
levels. Print quality may degrade with heavier liners. Using a
lighter liner may reduce the appearance of splatter. Print quality
with some solvent-based topcoats may not be acceptable for all
applications.
Perforations
If the liner is perforated, make sure that no adhesive accumulates
on the top or back of the label sheet. The perforation line should
stop 1.6 mm (0.06 in.) from the edge of the sheet to prevent jams
and tearing of the sheet within the printer path. Perforations