HP PCL/PJL reference - PCL 5 Comparison Guide

ENWW Printer-Specific Differences 2-5
Table 2-3. PCL Feature Additions for HP LaserJet 4
Feature/Command Support Comments
Adaptive Compression System New Adaptive compression system enables the printer to
compress internal raster data when memory becomes
low. This operation occurs automatically; there are no
PCL commands for this feature (refer to Chapter 5 for
ADC information).
Configuration Command New Allows PCL jobs to be printed (using LocalTalk or
EtherTalk MIO) using AppleTalk protocol.
Number of Copies Modified Supports 1-32,767 copies as does the HP LaserJet IIISi
printer.
Units of Measure Command New Allows selection of the units of measure for cursor
moves, drawing rules, and for character spacing (font
metrics).
Page Size Modified A parameter value is added for B5 envelope size; the
HP LaserJet 4 printer supports the four standard paper
sizes and five envelope sizes.
Bitmap Font Support New Header Printer will expand 300 dpi bitmap fonts to 600 dpi. A
new 300/600 dpi bitmap font descriptor has been added
to allow bitmap fonts to be created that work at either
1/300 or 1/600 inch printer resolution.
Scalable Font Support New Header A new Universal header has been added to allow
design of typefaces of different scaling technologies to
be supported by one header. This header is used to
support TrueType on the HP LaserJet 4 printer. (This
header will be used to support any other new scaling
technologies HP may add in the future).
TrueType New TrueType scaling technology support has been added to
the printer.
Internal Typefaces New Several new Intellifont and TrueType internal typefaces
(and supporting symbol sets) are now provided in the
printer.
Raster Resolution Command Modified Parameter values have been added to support raster
resolutions of 200 dpi and 600 dpi.
User-defined Pattern New Header A new 300/600 dpi user-defined pattern header has
been added to support patterns that work at either
1/300 or 1/600 inch printer resolution.
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