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BXcjkjatype Package

LaTeX: Support for Japanese typesetting with pdfLaTeX and CJK package

This package provides working configuration of the CJK package suitable for Japanese typesetting of moderate quality. Moreover, it facilitates use of the CJK package for pLaTeX users, by providing commands that are similar to those used by the pLaTeX kernel and some other packages used with it.

Note that while the CJK package supports many input encodings, this package supports only UTF-8.

System requirement

  • TeX format: LaTeX.
  • TeX engine: pdfTeX (DVI or PDF mode).
  • DVI driver: Anything.
    • Non-default font settings require dvipdfmx or pdfTeX.
  • Dependent packages:
    • CJK, CJKutf8, CJKspace, CJKpunct, etoolbox;
    • ipaex-type1 (when using default font mapping);
    • zhmetrics (when using non-default font mapping).


  • *.sty → $TEXMF/tex/latex/BXcjkjatype


This package is distributed under the MIT License.

The bxcjkjatype Package

Package Loading


The available options are described hereafter.

Options for auto-wrapping

These options enable one to wrap the document body with a CJK(*) environemnt automatically and safely. They are suitable when a document contains much amount of CJK text, or some “moving arguemnts” hold CJK text.

  • whole, wholeCJK*: Wraps the whole document body with a CJK* environment (precisely speaking, with \begin{uCJK*} ... \end{uCJK*} ).
  • wholeCJK: Wraps the whole document body with a CJK environment (precisely speaking, with \begin{uCJK} ... \end{uCJK} ).
  • nowhole (default): Negation of wholeCJK* or wholeCJK.

Options for “auto-tilde”

The option autotilde triggers automatic invocation of \CJKtilde, which makes a tilde character (~) insert “shibuaki” (a thin space between alphabetic and ideographic letters) rather than a no-break space (standard). No-break spaces can still be inserted by the command \nbs, and \standardtilde cancels the effect of \CJKtilde. (The commands mentioned here belong to CJK package.)

  • autotilde: Makes \CJKtilde invoked at the beginning of every CJK(*) environemnt.
  • noautotilde (default): Negation of autotilde.

Options for font-mapping

One can use preset font mappings in the same way as in the pxchfon package. Please refer to the manual of that package for detailed explanation of this feature.

  • oneweight, nooneweight: The same as in pxchfon.
  • One can use font preset options (such as ms) which are available in pxchfon (except obsolete ones).
  • ttfname=<pattern>: Specifies the pattern of the TTF font names which are used when TTC substitution is employed. For example, when ttfname=*_1 is given, the font “index 0 of mogam.ttc” will map to “mogam_1.ttf”, and similarly, “index 1” to “mogam_2.ttf” and so on.
  • ipaex-type1: Disables the font management of this package and directly uses the families provided by the ipaex-type1 package, namely ipxm and ipxg. In this setting the value of \mcdefault is ipxm and the value of \gtdefault and \mgdefault is ipxg, so that the higher level commands (such as \sffamily and \gtfamily) can work correctly.

Options for CJK font scaling

  • scale=<real>: Sets the scaling factor for CJK fonts.

(With version 0.3 or later, one can employ the scaling even with the ipaex-type1 option.)

Other options

  • everypage: Outputs the font mapping information on every page of the resulted DVI document. Available only with dvipdfmx driver.
  • noeverypage (default): Negation of everypage.
  • driver options: pdftex, dvipdfmx, dvips and none are available. The driver setting is relevant only when using font mappings other than the default one (ipaex-type1 fonts), so one need not care of drivers in using default fonts. Moreover, non-default font mappings are supported only by pdftex and dvipdfmx, and these two values are auto-detected (pdftex is default in PDF mode and dvipdfmx in DVI mode). Thus one will never need to specify the driver.
  • substmingoth: Applies the substituion of families min, goth and maru (used conventionally for Japanese) with families mc, gt and mg (standard in this package).
  • nosubstmingoth (default): Negation of substmingoth.
  • boldbyembolden (default): Changes the implemention of \CJKbold (pseudo-bold) from “overstriking” to “synthetic emboldening”.
  • noboldbyembolden: Negation of boldbyembolden.


Selecting CJK fonts

The present package provides three “generic” CJK families in the same way as pLaTeX plus the japanese-otf package: Mincho family (\mcfamily), Gothic family (\gtfamily), and Maru-gothic family (\mgfamily). In default setting, the font set from the ipaex-type1 package are allocated; Mincho family uses IPAex Mincho font, and Gothic and Maru-gothic families use IPAex Gothic font. This allocation can be altered by users.

  • \mcfamily: Changes the CJK family to Mincho family. Equivalent to \CJKfamily{\mcdefault}.
  • \gtfamily: Changes the CJK family to Gothic family. Equivalent to \CJKfamily{\gtdefault}.
  • \mgfamily: Changes the CJK family to Maru-gothic family. Equivalent to \CJKfamily{\mgdefault}.

More advanced commands:

  • \mcdefault/\gtdefault/\mgdefault: The names of CJK families corresponding to the three generic families. In the standard allocation their values are mc/gt/mg respectively and the allocation is used as default.

  • \setCJKfamilydefault{<CJK-family>}: Declares the default CJK family. This default value is used when family names are missing in some commands, such as \CJKfamily{} and \begin{CJK}{UTF8}{}. The (redefined) \normalfont also switches the CJK family to the family specified by this command.

    The default value of this default family is the “counterpart” of the alphabetic font family which is in effect at the beginning of the document body. (See the next subsection.)

Synchronization of CJK and non-CJK families

The CJK package (and pTeX engine) manages separate “current families” for CJK and alphabetic (non-CJK) families. While this treatment has its merit, synchronization of the two “current families” is convenient in many cases. Accordingly, tHe present package redefines some of the LaTeX commands that switches current alphabetic font families so that the CJK family will be switched to the counterpart of the current alphabetic family, where the “counterpart” is defined as follows:

  • \rmfamily (Serif) → \mcfamily (Mincho)
  • \sffamily (Sans-serif) → \gtfamily (Gothic)
  • \ttfamily (Monospace) → \gtfamily (Gothic)
  • The counterpart of the other families is \mcfamily.

Redefined commands:

  • \rmfamily/\sffamily/\ttfamily: Changes the CJK family to the counterpart of the alphabetic font family after executing the original function.
  • \normalfont: Changes the CJK family to the default CJK family specified by \setCJKfamilydefault command.

There are shorthand forms of CJK/CJK* environemnts:

  • \begin{uCJK*}...\end{uCJK*}: Equivalent to:


    where counterpart means the counterpart of the current alphabetic font family.

    Note that this is not equivalent to


    structure, which uses the default CJK family.

  • \begin{uCJK}...\end{uCJK}: Equivalent to:


Font mapping

The usage of these commands are the same as in the pxchfon package. Please refer to the manual of that package for detail.

  • \setminchofont[<id>]{<font-file>}
  • \setgothicfont[<id>]{<font-file>}
  • \setmarugothicfont[<id>]{<font-file>}
  • \setmediumminchofont[<id>]{<font-file>}
  • \setboldminchofont[<id>]{<font-file>}
  • \setmediumgothicfont[<id>]{<font-file>}
  • \setboldgothicfont[<id>]{<font-file>}
  • \setxboldgothicfont[<id>]{<font-file>}

However there is a major limitation as to the use of font mapping with the pdfTeX engine. One can use only TrueType fonts and moreover TTC format is not allowed. (One can use any flavor of OpenType fonts when using dvipdfmx.)

Note: The present package does not support the light-weight Mincho font, and thus \setlightminchofont does nothing useful.

Other commands

  • \UTF{<hexadecimal-number>}: Inputs a CJK character through Unicode codepoint value. \UTF{5B57} is equivalent to \Unicode{"5B}{"57}.

  • \CJKforce{<character>...}: Afterwards Treats the characters given in the argument as CJK characters (printed using CJK fonts).

  • \CJKunforce{<character>...}: Cancels the effect of the \CJKforce command.

  • \@<character>: Treats the next character (only that occurrence) as a CJK character, when the character is outside ASCII; othersize the normal meaning of \@ is retained.

  • \CJKecglue: Insers a “shibuaki” space. This will be invoked by ~ when \CJKtilde is in effect. This command can be redefined by users to adjust the value of shibuaki space, just as \CJKglue can be redefined to adjust inter-ideographic space.

    For example:

    \renewcommand{\CJKecglue}{\hspace{0.125em minus 0.125em}}


  • The standard font families provided by this package does not support vertical writing, even when using default ipaex-type1 font set. However, the families provided by ipaex-type1 (ipxm and ipxg) do support vertical writing, and one can utilize these families directly by specifying ipaex-type1 option.

Revision History

  • Version 0.3 ‹2016/10/15›

    • Made the vertical writing work well (with CJKvert).
    • Avoided garbling of PDF strings created by hyperref.
    • Allowed font scaling even when ipaex-type1 is set.
    • Added boldbyembolden feature.
    • Added ttfname option.
    • Added substmingoth option.
  • Version 0.2c ‹2013/10/18›

    • Added support of CJK font scaling.
    • Added \CJKforce, \CJKunforce, \@.
  • Version 0.2b ‹2013/09/28›

    • Added \UTF, \CJKecglue.
  • Version 0.2a ‹2013/08/08›

    • Added autotilde option.
  • Version 0.2 ‹2013/08/08›

    • The first public version.

Takayuki YATO (aka. "ZR")


LaTeX: Support for Japanese typesetting with pdfLaTeX and CJK package







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