If you need a specific file because you are using legacy Roland Cutters, Plotters, or CNC machines (which sometimes label their internal firmware fonts as F1, F2, F3, F4), please refer to your machine’s manual. Those are hardware-specific bitmaps, not standard CID fonts.
In the world of PDFs, "CID" stands for . CID-keyed fonts are a sophisticated technology developed by Adobe to handle large, complex character sets—specifically for East Asian languages like Chinese, Japanese, and Korean (CJK). Cid Font F1 F2 F3 F4 Free Download
Since you can't download "CIDFont F1" as a standard font file, you can try these workarounds to fix missing font errors: If you need a specific file because you
You are likely searching for these files because you opened a PDF or AI file and received an error: Cid Font F1 F2 F3 F4 Free Download