Product details
- Brand
- For Monarch
- Resolution
- 300 dpi
- Product type
- Replacement thermal printhead
Description
This replacement thermal printhead is advertised for 300 dpi versions of the Monarch/Paxar 9825, 9850 and 9855 label printers. It is a service component for an existing compatible printer, rather than a complete printer or a resolution-upgrade kit.
The catalog lists the references 12055201, 12678401 and KPA-106-12TAF1-MM2. Avery Dennison’s Monarch 9855 documentation identifies 12678401 as a 300 dpi printhead reference. Match the physical part label and printer configuration before ordering; similar printer names do not establish compatibility.
Features
- 300 dpi specification: intended for the listed 300 dpi printer configurations.
- Three listed printer families: Monarch/Paxar 9825, 9850 and 9855, subject to exact configuration.
- Part-reference checks: catalog references help compare the replacement with the installed component.
- Replacement component: for servicing an existing print system, not changing the printer’s native resolution.
- Protected packaging: the supplied listing describes a carton with foam protection.
Specifications
- Resolution
- 300 dpi
- Listed printer families
- 3 models
- Item type
- 1 printhead
| Printer families listed | Monarch/Paxar 9825, 9850 and 9855 |
|---|---|
| Resolution | 300 dpi |
| Manufacturer-confirmed reference | 12678401 is identified for a 300 dpi Monarch 9855 printhead |
| Other catalog references | 12055201; KPA-106-12TAF1-MM2 — verify against the installed part |
| Not listed as compatible | 203 dpi configurations and other printer models |
| Brand status | Third-party replacement; not represented as genuine Avery Dennison OEM |
| Condition stated by supplier | New |
| Package | Replacement printhead in protective packaging |
Compatibility checklist
Check the printer’s model plate and configuration report before removing any parts. If the printer has previously been converted or repaired, the installed assembly can be a more useful reference than a sales name alone.
| Printer model | Confirm 9825, 9850 or 9855 on the actual unit |
|---|---|
| Resolution | Confirm 300 dpi; 203 dpi is not interchangeable |
| Part label | Compare the full part reference, connectors and mounting layout |
| Purpose | Replacement of a matching head; not a standalone resolution conversion |
What's included
- Replacement thermal printhead
Printer, labels, ribbon, tools and conversion components are not included.
Common questions
Will it turn a 203 dpi printer into 300 dpi?
No. A replacement printhead alone is not a verified conversion kit. Use only with the correct printer configuration and follow the manufacturer’s service requirements.
Is it a genuine Monarch/Avery Dennison part?
The supplied catalog presents it as a replacement for Monarch printers. It is not represented here as genuine Avery Dennison OEM stock.
Will a new head fix every print-quality problem?
No. Media, ribbon selection, contamination, pressure and settings can also affect output. Follow the printer’s troubleshooting procedure before deciding that the head needs replacement.
How should it be installed?
Power down and unplug the printer, let the head cool and follow the model-specific service instructions, including electrostatic precautions. Avoid touching the printing surface; use a qualified technician if you are unfamiliar with the procedure.
Product information & sources
Printer resolution and the 12678401 reference were checked against Avery Dennison documentation. Compatibility with the other listed models remains the replacement supplier’s claim and requires an exact part match. Avery Dennison Monarch 9855 operator handbook. Reviewed September 2026.
Need help choosing? Contact Eco Home Office. See our shipping details and returns policy.