Article View: comp.lang.postscript
Article #7754Re: what about color laser printers?
From: Jack Slingerland
Date: Tue, 20 Dec 1988 18:16
Date: Tue, 20 Dec 1988 18:16
35 lines
2054 bytes
2054 bytes
Curtis Jackson (jackson@adobe.COM) states:
> Just a bit of picky education: There is no such thing as "Color Postscript".
> The Postscript [tm] Language from Adobe has always had full color support
> from Day 1.
If we take the red book as the definition of the language at "Day 1", then
at Day 1 the language allowed for setting a current painting color
(setrgbcolor and sethsbcolr), and for querying the interpreter for the
current color setting (currentrgbcolor and currenthsbcolor). There was
no provision for color in the raster operators.
In 1988 ("Day 1" + 3 years), Adobe published "PostScript Language Color
Operator Definitions" which defined a new color model (cmyk) and the
following new operators:
setcmykcolor currentcmykcolor
setcolortransfer currentcolortransfer
setblackgeneration currentblackgeneration
setundercolorremoval currentundercolorremoval
setcolorscreen currentcolorscreen
colorimage (in 5 flavors)
It is this version of PostScript [tm] (implemented in version 49),
which is meant when it is said that Tektronix's Phaser Interpreter is
compatible with Color PostScript [tm].
-----------------------------------------------------------------
Jack Slingerland (503) 685-3985
Graphics Printing & Imaging Division
Tektronix, Inc (MS 63-356)
PO Box 1000; Wilsonville, Oregon 97070
jacks@pogo.GPID.TEK.COM ...tektronix!pogo!jacks
Technical Details
Message-ID:
<6505@pogo.GPID.TEK.COM>Path:
arc1-ca.pugleaf.net!utzoo!attcan!uunet!tektronix!pogo!jacksReferences:
<1667@valhalla.ee.rochester.edu> <113@adobe.COM>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!tektronix!pogo!jacks From: jacks@pogo.GPID.TEK.COM (Jack Slingerland) Newsgroups: comp.lang.postscript Subject: Re: what about color laser printers? Summary: "color" as defined in version 49 Keywords: LaserWriter, PostScript Message-ID: <6505@pogo.GPID.TEK.COM> Date: 20 Dec 88 18:16:40 GMT References: <1667@valhalla.ee.rochester.edu> <113@adobe.COM> Organization: Tektronix Inc., Beaverton, Or. Lines: 35