User Manual

61
QL Series User Guide
Use the supplied cleaning pen or 70%
isopropyl alcohol on a cotton swab to
clean the print elements from end to end
(the print elements are located in the thin
gray line on the printhead).
Clean thoroughly with the cleaning pen
or 70% isopropyl alcohol and a cotton
swab.
Units with linerless platens: Rotate
media rollers & clean bearing points
only. Avoid use of alcohol on the surface
of the media rollers!
Clean thoroughly with the cleaning pen
or 70% isopropyl alcohol and a cotton
Rotate the platen roller and clean it
thoroughly with the cleaning pen or
70% isopropyl alcohol and a cotton
swab.
Units with linerless platens: Rotate
platen & clean bearing points only.
Avoid use of alcohol on the surface of
linerless platens!
Clean thoroughly with the cleaning pen or
70% isopropyl alcohol and a cotton swab.
Water-dampened cloth
Brush/air blow. Ensure the Bar Sensor, Gap
Sensor and Label Present Sensor windows
are free of dust.
Units with linerless platens:
Clean inside surfaces of edge guides &
media rollers with the supplied cleaning
pen or 70% isopropyl alcohol on a cotton
swab.
Printhead
Elements
Peeler Bar Rollers
Peeler Bar or
Scraper
Scraper used on units
with linerless platens
Platen surface
Avoid using alcohol on
linerless platen surface
Tear Bar
Label
Presence
Sensor
Gap
Sensor
Bearing Points
Linerless Platens only
Edge Guides,
Inner surfaces
on both sides.
Units with linerless
platens only.
Media
Roller
Media
Roller
Avoid using
alcohol on
linerless media
roller surfaces
Bearing Points
Linerless Platens only
Figure 22: Cleaning the QL 420
Bar Sensor