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LASERJET.HLP
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1991-08-24
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HEWLETT PACKARD LASERJET, DESKJET, AND PAINTJET SERIES
GRAPHICS MODES--LASERJET AND DESKJET
The HP Laserjet is capable of printing raster graphics in
"resolutions" of 75, 100, 150, and 300 dots per inch. UNLIKE dot
matrix printers, the lower resolution mode yields IDENTICAL print
quality; the same number of dots are printed in all resolutions.
The difference is in the ADDRESSABLE resolution. For each 75 dpi
"dot" sent to the printer, 16 itty-bitty 300 dpi dots are actually
printed--a matrix of 4 horizontally by 4 vertically; hence it
takes 16 times less data to fill the same area in 75 dpi mode as
in 300 dpi.
Patternland supports all four HP modes and uses two alternative
methods for each mode--making 8 Patternland Graphics Print Modes
available.
In modes 0-3, Patternland automatically "magnifies" the image by a
factor of 8 and thereby avoids complicated "bit-level" computing
to create the image. These modes are fastest. In Modes 4-7
Patternland writes one addressable "dot" per Patternland dot; for
example, in mode 7, 1 Patternland dot equals 1 300 dpi HP dot.
The vertical and horizontal magnification factors apply to the
printout. Likewise, the individual symbol numbers 1-16 create a
variable magnification factor of 1 to 16 per dot.
NOTES: Raster Graphics must be printed in the default Portrait
orientation, so max dots are for an 8 inch print line. On the
Laserjet, the user must confine her/his vertical range to the size
of the paper in use; otherwise the printer will overflow and issue
an error message. (The Deskjet/Paintjet are not limited if using
continuous paper.) All horizontal vertical ratios are 1:1.
Modes: 0 1 2 3 4 5 6 7 8 9
Max Dots: 75 100 150 300 600 800 1200 2400 n/a n/a
DPI: 75 100 150 300 75 100 150 300
Ratio: 1:1 1:1 1:1 1:1 1:1 1:1 1:1 1:1
PAINTJET GRAPHICS MODES
PaintJet graphics function similarly to the LaserJet and Deskjet,
however only two resolutions are available in two Patternland
methods:
Modes: 0 1 2 3 4 5 6 7 8 9
Max Dots: 90 180 n/a n/a 720 1440 n/a n/a n/a n/a
DPI: 90 180 90 180
Ratio: 1:1 1:1 1:1 1:1 1:1 1:1 1:1 1:1
Modes 0 and 1 use the automatic magnification by eight method
described above; modes 4 and 5 are the "direct drive" modes that
access the most dots.
PAINTJET GRAPHICS COLORS
The PaintJet supports a palette of 330 colors in 90 dpi (Modes 0
and 4), but only 8 colors in 180 dpi. The 330 colors are created
by "dithering" (putting side by side) dots of the eight colors in
a matrix of 4 dots. The PaintJet graphics palette can be set
using Patternland's color palette editor by supplying RGB values
given in the manual. Alternatively, the palette can be set from
the current video palette by Patternland if AutoPalette is ON.
Thus by changing the EGA/VGA video palettes, you can automatically
create a new printer palette. Remember that only modes 0 and 4
use the full palette.
GRAPHICS MODE WEAVE DATA AND GRAPHPAPER--LASER/DESK/PAINT
Beginning with version 4.1 PWS can print the threading/treadling
information in the graphics mode pattern draft. PWS can also
interweave a graphpaper background at printing time. (See below
for discussion of Laserjet text-mode graphpaper.) Only the
"direct drive" modes 4 and above can produce graphpaper. Modes
below 4 will ignore the graphpaper setting. Weave Data and
Graphpaper are both selected from the main Weave menu.
TEXT MODE PRINTING--LASERJET AND DESKJET
The LaserJet and DeskJet are capable of very fine adjustments in
character and line spacing, and the LaserJet driver supports
numerous preprogrammed increments, plus the variable character
and line spacing options. These determine the text mode sett.
The HORIZONTAL increment is a 120th of an inch, e.g., 12/120ths
would yield 10 characters per inch.
The VERTICAL increment is a 48th of an inch, e.g., 8/48ths would
yield 6 lines per inch.
Both horizontal and vertical increments are accurate to 4 decimal
places, e.g. you could specify a horizontal increment of 15.3423 /
120ths of an inch!
In addition, combined horizontal/vertical spacings are provided
with the <S11> and <S18>. These spacings are exactly square and
designed to fill in all the gaps when the block character ASCII
code 252 is used. The square spacing <S11> is 11.4 characters per
inch and works well with ASCII #252 in the default font: Courier
<FC>. <S18> works well when the Font LinePrinter is selected with
<FL>. You can put these commands in the Printer Recorder and save
them with the weaving to automate your printer setup.
You can also select top and left margins, the number of copies,
letter or legal size paper, etc.
GRAPHPAPER BACKGROUND FOR LASERJET TEXT MODE
Beginning with V. 5.0 PWS creates a full page of graphpaper 10
squares per inch when you print in text mode with the
graphpaper background option selected. The line spacing is
automatically set to 10 lines per inch. For other setts you
would need to use the LASRGRID program described below. This
option is not available for Deskjet and Paintjet text modes.
PATTERNLAND LASERGRID FOR LASERJET (TYPE <LASRGRID> FROM DOS)
To produce graphpaper for text mode printing using other
spacings besides 10x10 per inch, a separate program, PATTERNLAND
LASRGRID, is provided on the supplementary files disk. With
LaserGrid you can print or download as a form a graphpaper
background with any spacing and highlight you require. Five
preset backgrounds are provided: 10 x 10 squares and 18 x 18
squares per inch, both in portrait and landscape modes and
highlighting--and one 10x10 without highlighting. These five
graphpapers are designed to be used with H10 x V10 and H18 x V18
spacing setups. Note that other spacings will NOT match the
graphpaper. In order to align the characters within the squares,
and so that the Title line sits on top in Formats 2 & 3, the
graphpaper begins 0.08" down vertically for the 10x10 options, and
0.04" down for the 18x18 options. The beginning horizontal
position is 0 for all four options. THESE FIGURES WILL BE USEFUL
if you use the sixth LaserGrid option: a Custom Grid. For
example, you could make the graphpaper only 5" x 5" square instead
of 8 x 10". Include the LF (linefeed) command in
Print/Define/Setup if you use Formats 1 or 4. This will push the
pattern down one line onto the graphpaper.
MEMORY LIMITATIONS: The size of the graphpaper your LaserJet can
produce depends on the number of squares per inch, the area of
graphpaper, and the amount of memory installed. The preset
options 1-4 were tested on a LaserJet Series II with a 1 meg
memory upgrade installed. The 18-square graphpaper is only 6
inches on each side because out-of-memory errors occurred in
multiple copy printing of larger areas. If your printer cannot
produce results with options 1-4, use the Custom Grid option to
reduce the number of squares per inch or the area to be printed.
You will probably also want to consider adding a memory upgrade to
your LaserJet.
YOU MUST RUN LASERGRID BEFORE WEAVE SIMULATOR. Then print from
Weave Simulator in text mode only using the characters you select:
the block characters <252>, <127>, and the <space>, <*>, and <x>
are especially useful.
Note that LASERGRID is a utility program which will simply stop
with an error message if your input does not match what is being
asked for: e.g., you CANNOT highlight every 8.5 lines, but you CAN
set a square spacing to 8.5 per inch. If you make an error,
simply reload the program.
TEXT MODE PRINTING--PAINTJET
The PaintJet is more limited in its ability to adjust the
character pitch and line spacing. H10 (the default 10 characters
per inch) combined with the V9 setup option provide a reasonably
square setup for ASCII character 252 to create a Pattern draft
with numerical data. A graphpaper background is not supported.
Color Mixed Printing IS supported, however the standard PaintJet
330-color palette is NOT available in text mode so the Color Mix
Printer Palette is created by overstriking Yellow, Magenta, Cyan,
and Black up to 4 times (See Dot Matrix Help and Color Mix
Printing help). Palettes created in this way are vibrant and rich
but do not match the graphics palette and do not allow for the
variation of hue available with the dithering method mentioned
earlier. Also, the video palette can NOT create a Color Mix
Palette for text mode printing. You must use the Rainbow printout
option to create a color key chart containing all possible mixes
and match the color to the video palette yourself.
HEWLETT PACKARD JET SERIES FILES ON THE DRIVERS DISK ARE:
HPLaserJ.pdv ; LaserJet Series II or DeskJet driver
HPPaintJ.pdv ; PaintJet driver
HPDeskJ.pdv ; DeskJet driver
LasrGrid.exe ; stand alone program to make graphpaper
overlays on the LaserJet
LaserJet text mode samples for graphpaper overlay form:
BirdGrid.pwv &
BirdGrid.ptl ; sample birdseye weaving that uses 10x10
spacing with a LaserJet/EGA system.
BirdComp.pwv &
BirdComp.ptl ; compressed birdseye for 18x18 spacing.