Replacing the Printer Ribbon
- Dot matrix printers use a continuous ink ribbon that gradually loses ink with use.
- Over time, printed output becomes lighter and harder to read, indicating the ribbon needs
replacement.
- The ribbon is housed in a modular cartridge designed for quick replacement.
- Replacement process is simple and typically takes less than a minute:
- Remove the old cartridge by pulling it out.
- Insert the new cartridge until it clicks into place.
- No tools are usually required.
Replacing the Print Head
- The print head is a mechanical component with tiny pins that strike the ribbon to
create text.
- Pins can wear out or stop working, requiring replacement.
- Safety precautions:
- The print head can become hot during use—allow it to cool before handling.
- The back of the print head includes a heat sink to dissipate heat.
- Replacement methods vary by model:
- Some printers require unscrewing the print head.
- Others use a release lever or bar for tool-free removal.
- Best practice: Replace the ribbon cartridge simultaneously to ensure optimal print
quality.
Loading Continuous-Feed Paper
- Dot matrix printers use continuous-feed paper with tractor feed holes on both
sides.
- Key considerations for proper alignment:
- Ensure the tractor feed holes align with the printer’s sprockets.
- For pre-printed forms, verify precise alignment to avoid misprints.
- Paper handling tips:
- Avoid obstructions in the paper path to prevent jams.
- Ensure the paper can move freely both into and out of the printer.