Ricoh PostScript3 Unit Type M41: Which Ricoh Printers Does It
If you have a Ricoh IM C300F or IM C400F color MFP and the genuine Adobe PostScript option is missing, the card you need is the PostScript3 Unit Type M41.
Type M41 comes in three EDP code variants depending on production batch and region: 418579, 418580, 418581. All are genuine Ricoh PostScript3 units and are functionally identical for the machines listed below.
Below is the full compatibility list, what the card does once installed, and what resellers should know.

Which Ricoh printers does Type M41 fit?
Type M41 is designed for Ricoh's IM C300F / C400F compact color MFPs:
| Machine Model |
Type |
EDP Code |
|
| Ricoh IM C300F |
Color MFP |
Type M41 |
418579 / 418580 / 418581 |
| Ricoh IM C400F |
Color MFP |
Type M41 |
418579 / 418580 / 418581 |
Do not confuse Type M41 with Type M52 (fits IM C2510–C6010, the larger office color line). They are different cards for different machine sizes.
What does Type M41 actually do?
- Adds a genuine Adobe PostScript 3 RIP, replacing the machine's default PS3 emulation.
- Color PDFs, marketing brochures and PDF/X jobs render exactly as designed — no color drift, no swapped fonts.
- Machine reports "PostScript3" as installed under User Tools → Machine Features → Option.
- Raises resale value: small offices, design studios and print-for-pay shops specifically ask for "PS3 enabled" Ricoh color MFPs.
Specifications
| Item |
Detail |
| Product Name |
PostScript3 Unit Type M41 |
| Ricoh EDP Code |
418579 / 418580 / 418581 |
| Form Factor |
SD card module |
| Type |
Genuine Adobe PostScript 3 |
| Compatible Machines |
IM C300F / IM C400F |
| Stock |
In stock for wholesale |
How to install Type M41
- Power the MFP off and unplug for 30 seconds.
- Open the controller-side cover; insert the SD card into the marked PS3 slot, label facing out.
- Power on and let the machine detect the option during boot.
- Confirm under User Tools → Machine Features → Option → PostScript3: "Installed".
FAQ
Q: What is the difference between the three EDP codes? A: They are the same Type M41 card from different production batches or regional packaging. All work on IM C300F and IM C400F.
Q: Does Type M41 work on IM C2510? A: No. IM C2510 belongs to the larger C-series and takes Type M52 instead.
Q: Do you sell in bulk? A: Yes. We supply distributors, refurbishers and copier dealers worldwide.
Contact ricohunit.com for wholesale pricing