Cleaning your Zebra GK420 Printer
Regular cleaning of your Zebra GK420 printer will help extend it life cycle. The table below will help you with the cleaning process.
| Printer Part | Method | Interval |
| Printhead | Let the printhead cool for a minute, then use a new cleaning pen to swab the dark line on the printhead, cleaning from the center to the outside edges of the printhead. | When using a ribbon: after every roll of ribbon. When using direct thermal: after every roll of media. |
| Platen Roller | Remove the platen roller to clean. Clean the roller thoroughly with 90% medical grade alcohol and a cleaning swab or lint free cloth. | As needed. |
| Peel Bar | Clean thoroughly with 90% medical grade alcohol and a fiber free cleaning swab. Let the alcohol dissipate and the printer to dry completely before use. | As needed. |
| Media Path | Clean thoroughly with 90% medical grade alcohol and a fiber free cleaning swab. Let the alcohol dissipate and the printer to dry completely before use. | As needed. |
| Exterior | Water dampened cloth. | As needed. |
| Interior | Gently brush out printer. | As needed. |
Caution: Adhesives and media material can over time transfer onto the printer components along the media path including the platen and printhead. This build-up can accumulate dust and debris. Failure to clean the printhead, media path and platen roller could result in inadvertent loss of labels, label jams and possible damage to the printer.