grolj4(1) — Linux manual page

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grolj4(1)                General Commands Manual               grolj4(1)

Name         top

       grolj4 - groff output driver for HP LaserJet 4 and compatible

Synopsis         top

       grolj4 [-l] [-c num-copies] [-d [n]] [-F font-directory]
              [-p paper-format] [-w line-width] [file ...]

       grolj4 --help

       grolj4 -v
       grolj4 --version

Description         top

       This GNU roff output driver translates the output of into a PCL5
       format suitable for an HP LaserJet 4 printer.  Normally, grolj4
       is invoked by when the latter is given the “-T lj4” option.  (In
       this installation, ps is the default output device.)  Use groff's
       -P option to pass any options shown above to grolj4.  If no file
       arguments are given, or if file is “-”, grolj4 reads the standard
       input stream.  Output is written to the standard output stream.

       grolj4 supports the standard four styles: R (roman), I (italic),
       B (bold), and BI (bold-italic).  Fonts are grouped into families
       A, C, G, O, T, TN, U, and UC having members in each style.

              AB     Arial Bold
              ABI    Arial Bold Italic
              AI     Arial Italic
              AR     Arial Roman
              CB     Courier Bold
              CBI    Courier Bold Italic
              CI     Courier Italic
              CR     Courier Roman
              GB     Garamond Halbfett
              GBI    Garamond Kursiv Halbfett
              GI     Garamond Kursiv
              GR     Garamond Antiqua
              OB     CG Omega Bold
              OBI    CG Omega Bold Italic
              OI     CG Omega Italic
              OR     CG Omega Roman
              OB     CG Omega Bold
              OBI    CG Omega Bold Italic
              OI     CG Omega Italic
              OR     CG Omega Roman
              TB     CG Times Bold
              TBI    CG Times Bold Italic
              TI     CG Times Italic
              TR     CG Times Roman
              TNRB   M Times Bold
              TNRBI  M Times Bold Italic
              TNRI   M Times Italic
              TNRR   M Times Roman
              UB     Univers Bold
              UBI    Univers Bold Italic
              UI     Univers Medium Italic
              UR     Univers Medium
              UCB    Univers Condensed Bold
              UCBI   Univers Condensed Bold Italic
              UCI    Univers Condensed Medium Italic
              UCR    Univers Condensed Medium

       The following fonts are not members of a family.

              ALBB   Albertus Extra Bold
              ALBR   Albertus Medium
              AOB    Antique Olive Bold
              AOI    Antique Olive Italic
              AOR    Antique Olive Roman
              LGB    Letter Gothic Bold
              LGI    Letter Gothic Italic
              LGR    Letter Gothic Roman

       The special font is S (PostScript Symbol); SYMBOL (M Symbol), and
       WINGDINGS (Wingdings) are also available but not mounted by

   Paper format and device description file
       grolj4 supports paper formats “A4”, “B5”, “C5”, “com10”, “DL”,
       “executive”, “legal”, “letter”, and “monarch”.  These are matched
       case-insensitively.  The -p option overrides any setting in the
       device description file DESC.  If neither specifies a paper
       format, “letter” is assumed.

   Font description files
       grolj4 recognizes four font description file directives in
       addition to those documented in

       pclweight n
              Set the stroke weight to n, an integer in the range -7 to
              +7; the default is 0.

       pclstyle n
              Set the style to n, an integer in the range 0 to 32767;
              the default is 0.

       pclproportional n
              Set the proportional spacing Boolean flag to n, which can
              be either 0 or 1; the default is 0.

       pcltypeface n
              Set the typeface family to n, an integer in the range 0 to
              65535; the default is 0.

   Drawing commands
       An additional drawing command is recognized as an extension to
       those documented in

       \D'R dh dv'
              Draw a rule (solid black rectangle) with one corner at the
              drawing position, and the diagonally opposite corner at
              the drawing position +(dh,dv), at which the drawing
              position will be afterward.  This generates a PCL fill
              rectangle command, and so will work on printers that do
              not support HP-GL/2, unlike the other \D commands.

       Nominally, all Hewlett-Packard LaserJet 4-series and newer
       printers have the same internal fonts: 45 scalable fonts and one
       bitmapped Lineprinter font.  The scalable fonts are available in
       sizes between 0.25 points and 999.75 points, in 0.25-point
       increments; the Lineprinter font is available only in 8.5-point

       The LaserJet font files included with groff assume that all
       printers since the LaserJet 4 are identical.  There are some
       differences between fonts in the earlier and more recent
       printers, however.  The LaserJet 4 printer used Agfa Intellifont
       technology for 35 of the internal scalable fonts; the remaining
       10 scalable fonts were TrueType.  Beginning with the
       LaserJet 4000-series printers introduced in 1997, all scalable
       internal fonts have been TrueType.  The number of printable
       glyphs differs slightly between Intellifont and TrueType fonts
       (generally, the TrueType fonts include more glyphs), and there
       are some minor differences in glyph metrics.  Differences among
       printer models are described in the PCL 5 Comparison Guide and
       the PCL 5 Comparison Guide Addendum (for printers introduced
       since approximately 2001).

       LaserJet printers reference a glyph by a combination of a
       256-glyph symbol set and an index within that symbol set.  Many
       glyphs appear in more than one symbol set; all combinations of
       symbol set and index that reference the same glyph are
       equivalent.  For each glyph, searches a list of symbol sets, and
       selects the first set that contains the glyph.  The printing code
       generated by hpftodit is an integer that encodes a numerical
       value for the symbol set in the high byte(s), and the index in
       the low byte.  See for a complete description of the font file
       format; symbol sets are described in greater detail in the PCL 5
       Printer Language Technical Reference Manual.

       Two of the scalable fonts, Symbol and Wingdings, are bound to
       256-glyph symbol sets; the remaining scalable fonts, as well as
       the Lineprinter font, support numerous symbol sets, sufficient to
       enable printing of more than 600 glyphs.

       The metrics generated by hpftodit assume that the DESC file
       contains values of 1200 for res and 6350 for unitwidth, or any
       combination (e.g., 2400 and 3175) for which
       res × unitwidth = 7620000.  Although HP PCL 5 LaserJet printers
       support an internal resolution of 7200 units per inch, they use a
       16-bit signed integer for positioning; if devlj4 is to support
       U.S. ledger paper (11 in × 17 in; in = inch), the maximum usable
       resolution is 32767 ÷ 17, or 1927 units per inch, which rounds
       down to 1200 units per inch.  If the largest required paper
       dimension is less (e.g., 8.5 in × 11 in, or A5), a greater res
       (and lesser unitwidth) can be specified.

       Font metrics for Intellifont fonts were provided by Tagged Font
       Metric (TFM) files originally developed by Agfa/Compugraphic.
       The TFM files provided for these fonts supported 600+ glyphs and
       contained extensive lists of kerning pairs.

       To accommodate developers who had become accustomed to TFM files,
       HP also provided TFM files for the 10 TrueType fonts included in
       the LaserJet 4.  The TFM files for TrueType fonts generally
       included less information than the Intellifont TFMs, supporting
       fewer glyphs, and in most cases, providing no kerning
       information.  By the time the LaserJet 4000 printer was
       introduced, most developers had migrated to other means of
       obtaining font metrics, and support for new TFM files was very
       limited.  The TFM files provided for the TrueType fonts in the
       LaserJet 4000 support only the Latin 2 (ISO 8859-2) symbol set,
       and include no kerning information; consequently, they are of
       little value for any but the most rudimentary documents.

       Because the Intellifont TFM files contain considerably more
       information, they generally are preferable to the TrueType TFM
       files even for use with the TrueType fonts in the newer printers.
       The metrics for the TrueType fonts are very close, though not
       identical, to those for the earlier Intellifont fonts of the same
       names.  Although most output using the Intellifont metrics with
       the newer printers is quite acceptable, a few glyphs may fail to
       print as expected.  The differences in glyph metrics may be
       particularly noticeable with composite parentheses, brackets, and
       braces used by A script, located in /usr/local/share/groff/
       1.23.0/font/devlj4/generate, can be used to adjust the metrics
       for these glyphs in the special font “S” for use with printers
       that have all TrueType fonts.

       At the time HP last supported TFM files, only version 1.0 of the
       Unicode standard was available.  Consequently, many glyphs
       lacking assigned code points were assigned by HP to the Private
       Use Area (PUA).  Later versions of the Unicode standard included
       code points outside the PUA for many of these glyphs.  The HP-
       supplied TrueType TFM files use the PUA assignments; TFM files
       generated from more recent TrueType font files require the later
       Unicode values to access the same glyphs.  Consequently, two
       different mapping files may be required: one for the HP-supplied
       TFM files, and one for more recent TFM files.

Options         top

       --help displays a usage message, while -v and --version show
       version information; all exit afterward.

       -c num-copies
              Format num-copies copies of each page.

       -d [n] Use duplex mode n: 1 is long-side binding (default), and
              2 is short-side binding.

       -F font-directory
              Prepend directory font-directory/devname to the search
              path for font and device description files; name is the
              name of the device, usually lj4.

       -l     Format the document in landscape orientation.

       -p paper-format
              Set the paper format to paper-format, which must be a
              valid paper format as described above.

       -w line-width
              Set the default line thickness to line-width thousandths
              of an em; the default is 40 (0.04 em).

Environment         top

              lists directories in which to seek the selected output
              device's directory of device and font description files.
              See and

Files         top

              describes the lj4 output device.

              describes the font known as F on device lj4.

              defines macros for use with the lj4 output device.  It is
              automatically loaded by troffrc when the lj4 output device
              is selected.

Bugs         top

       Small dots.

See also         top

       HP PCL/PJL Reference: PCL 5 Printer Language Technical Reference
       Manual, Part I

COLOPHON         top

       This page is part of the groff (GNU troff) project.  Information
       about the project can be found at 
       ⟨⟩.  If you have a bug report
       for this manual page, see ⟨⟩.
       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2022-12-17.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2022-12-14.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

groff 1.23.0.rc1.3569-94746-d1i4rtDyecember 2022                   grolj4(1)