Chapter 11 — Maintenance
98 EasyCoder PM4i Printer User’s Guide (Fingerprint Version)
Printhead Cleaning
Cleaning the printhead on a regular basis is important for the life
of the printhead and for the printout quality. You should clean
the printhead each time you replace the media. This section
describes how to clean the printhead using cleaning cards. If
additional cleaning is required, for example removing adhesive
residue from the platen roller or tear bar, use a cotton swab
moistened with isopropyl alcohol.
To clean the printhead
1 Open the front and side doors.
Isopropyl alcohol [(CH 3)2CHOH; CAS 67-63-0] is a highly
flammable, moderately toxic, and mildly irritating substance.