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QL Series User Guide
After every five
rolls of media
(or more often,
if needed)
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!
Printhead
(Figure 22)
Peel bar
(Figure 22)
Clean thoroughly with the cleaning pen
or 70% isopropyl alcohol and a cotton
Area Method Interval
As needed
Media Rollers
(Figure 22)
After every five
rolls of media
(or more often,
if needed)
Platen
Roller
(Figure 22)
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!
Tear bar
(Figure 22)
Scraper,
Linerless units
only (Figure 22)
Clean thoroughly with the cleaning pen or
70% isopropyl alcohol and a cotton swab.
Clean thoroughly with the
cleaning pen or 70% isopropyl
alcohol and a cotton swab.
Exterior
Water-dampened cloth
Interior
(Figure
22)
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.
As needed
After every five
rolls of media
(or more often,
if needed)
After every five
rolls of media
(or more often,
if needed)
Linerless media
requires more
frequent
cleaning
QL 420 Cleaning