Using a CMap with a non-embedded font

I would like to (for example) use MS Arial without embedding it. I can do this just fine if I use the Arial internal CIDs with /Encoding /Identity-H, but that is not what I want to do - I want to use /Encoding 123 0 R to refer to a CMap so that I can use Unicode code points in my text like this: (^@H^@e^@l^@l^@o^@ ^@W^@o^@r^@l^@d^@!)Tj<br /><br />I have the CMap working perfectly if I embed the font. However, if I do not embed the font, I get an error saying that Acrobat "Cannot find or create" the font. As noted above, the external font works OK if I use /Identity-H instead of my CMap. Is it simply not possible to use a CMap with an external font, or am I missing some vital step?<br /><br />Here's a simplified excerpt from my PDF document:<br /><br /><code><br />100 0 obj<br />&lt;&lt;<br />/Type /Font<br />/Subtype /Type0<br />/BaseFont /Arial,Bold<br />/DescendantFonts [ 101 0 R ]<br />/Encoding 200 0 R<br />%/Encoding /Identity-H<br />/ToUnicode /Identity-H<br />&gt;&gt;<br />endobj<br /><br />101 0 obj<br />&lt;&lt;<br />/Type /Font<br />/Subtype /CIDFontType2<br />/BaseFont /Arial,Bold<br />/Encoding 11 0 R<br />/FontDescriptor 102 0 R<br />/CIDSystemInfo << /Registry (Adobe) /Ordering (Identity) /Supplement 0 >><br />/DW 1050<br />&gt;&gt;<br />endobj<br /><br />102 0 obj<br />&lt;&lt;<br />/Type /FontDescriptor<br />/Ascent 1069<br />/CapHeight 0<br />/Descent -271<br />/Flags 32<br />/FontBBox [ -1000 -308 2231 1077 ]<br />/FontName /Arial,Bold<br />/ItalicAngle 0<br />/StemV 0<br />/AvgWidth 442<br />/MaxWidth 1000<br />/MissingWidth 1000<br />&gt;&gt;<br />endobj<br /><br />200 0 obj<br />&lt;&lt;<br />/Type /CMap<br />/CMapName /UniAC-UCS2-8-H<br />/CIDSystemInfo<br />&lt;&lt;<br />/Registry (Adobe)<br />/Ordering (Identity)<br />/Supplement 0<br />&gt;&gt;<br />/WMode 0<br />/Length 0<br />&gt;&gt;<br />stream<br />%!PS Adobe 3. 0 Resource CMap<br />%% DocumentNeededResources: ProcSet (CIDInit)<br />%%IncludeResource: ProcSet (CIDInit)<br />%BeginResource: CMap (UniAC-UCS2-8-H)<br />%Title: ( UniAC-UCS2-8-H Adobe Identity 0)<br />%% EndComments<br />/CIDInit /ProcSet findresource begin<br />12 dict begin<br />begincmap<br />/CIDSystemInfo<br />3 dict dup begin<br />/Registry (Adobe) def<br />/Ordering (Identity) def<br />/Supplement 0 def<br />&gt;&gt;<br />end def<br />/CMapName /UniAC-UCS2-8-H def<br />/CMapVersion 10. 001 def<br />/CMapType 1 def<br />/UIDOffset 950 def<br />/XUID [ 1 10 25343] def<br />/WMode 0 def<br />1 begincodespacerange<br /><0000> <FFFF><br />endcodespacerange<br />1 beginnotdefrange<br /><0000> <001F> 0<br />endnotdefrange<br />1 begincidrange<br /><0020> <007e> 3<br />endcidrange<br />endcmap<br />CMapName currentdict /CMap defineresource pop<br />end<br />end<br />%%EndResource<br />%%EOF<br />endstream<br />endobj