QL 420 Plus Cleaning

Area

Method

Interval

Printhead (Figure 24)

Platen Roller (Figure 24)

Peel bar (Figure 24)

Scraper, Linerless units only (Figure 24))

Tear bar (Figure 24) Exterior

Interior (Figure 24)

Media Rollers (Figure 24)

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).

 

After every five rolls of

Rotate the platen roller and clean it

 

media (or more often, if

 

needed),

thoroughly with the cleaning pen or

 

 

Linerless media requires

70% isopropyl alcohol and a cotton

 

 

more frequent cleaning

swab.

 

 

 

 

 

 

Units with linerless platens: Rotate

 

 

platen & clean bearing points only.

 

 

Avoid use of alcohol on the surface

 

 

of linerless platens

 

 

 

 

 

 

 

As needed

Clean thoroughly with the cleaning

 

After every five rolls of

pen or 70% isopropyl alcohol and a

 

media (or more often, if

cotton swab.

 

needed)

Water-dampened cloth

 

 

Brush/air blow. Ensure the Bar

 

As needed

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.

 

 

Clean thoroughly with the cleaning

 

After every five rolls of

 

media (or more often, if

pen or 70% isopropyl alcohol and a

 

needed)

cotton swab.

 

 

 

 

 

Units with linerless platens: Rotate

 

 

media rollers & clean bearing points

 

 

only. Avoid use of alcohol on the

 

 

surface of the media rollers!

 

 

56

QL Plus Series User Guide