Cidfont F1 Normal Fixed -

Example of correct CIDFont creation (Python pdfrw style pseudo):

font_dict = 
    '/Type': '/Font',
    '/Subtype': '/CIDFontType2',
    '/BaseFont': '/NotoSansCJKjp-Regular',
    '/CIDSystemInfo': 
        '/Registry': '(Adobe)',
        '/Ordering': '(Japan1)',
        '/Supplement': 6
    ,
    '/DW': 1000,
    '/W': []   # explicit widths

Do not put /Ordering (Normal) or /Fixed unless you are building a diagnostic tool.

cidfont

f1

normal

fixed

CIDToGIDMap (for Type 2 CIDFonts): Direct mapping or identity

Font Matrix: [1000 0 0 1000 0 0] (typical)

Bounding Box: Fixed for all glyphs (e.g., [-100 -300 1100 900])

Embeddable: Yes

Subsettable: Yes (for PDF optimization)

First, forget everything you know about simple fonts like Type 1 (.pfb) or TrueType (.ttf). A CIDFont (Character Identifier Font) is a font format designed for large character sets—specifically for CJK (Chinese, Japanese, Korean) scripts. cidfont f1 normal fixed

| Property | Value / Meaning | |----------|----------------| | /DW (default width) | Same for all glyphs (e.g., 600 for 10‑point fixed at 600 units/em) | | /W array | Often absent or redundant for pure fixed‑pitch | | /WMode | 0 (horizontal) | | /CIDToGIDMap | May be Identity for direct mapping |

In Ghostscript’s source file gs_cidfn.ps, you will find:

/CIDFont /F1 /Normal /Fixed

That is a built-in fallback for when no real CIDFont is available. It activates the “CIDFallback” mechanism with Normal registry/ordering. Example of correct CIDFont creation (Python pdfrw style

Used in PDF / PostScript font dictionaries:

/F1 << /Type /Font /Subtype /Type0
      /BaseFont /Courier /Encoding /Identity-H
      /DescendantFonts [ /CIDFont /F1 ]
>>
/CIDFont /F1 << /Type /Font /Subtype /CIDFontType0
               /BaseFont /Courier
               /CIDSystemInfo << /Registry (Adobe) /Ordering (Identity) /Supplement 0 >>
               /DW 600   % Default width for all glyphs (fixed pitch)
               /W [ ... ]
            >>

Context: PostScript Language & PDF Architecture Category: Font Definitions / Descriptors