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- From: casseres@apple.com (David Casseres)
- Newsgroups: comp.sys.mac.system
- Subject: Re: (Q) Fonts/Stylewriter
- Message-ID: <casseres-181292100427@missmolly.apple.com>
- Date: 18 Dec 92 18:24:12 GMT
- References: <1992Dec8.161452.1@esat.kuleuven.ac.be> <1992Dec8.164054.3459@nic.csu.net>
- Sender: usenet@goofy.apple.COM
- Followup-To: comp.sys.mac.system
- Organization: Apple Computer Inc.
- Lines: 43
-
- In article <1992Dec8.164054.3459@nic.csu.net>, marc@csufres.CSUFresno.EDU
- (Marc Matteo) wrote:
- >
- > That's why!. Screen fonts are just that, there set up for a 72 dpi (or there
- > abouts) screen. They need either a TT or Postscript counterpart to look
- > right.
-
- Sigh.
-
- This is off the topic of the original post but...
-
- The term "screen font" is *extremely* misleading and has caused a whole lot
- of confusion ever since PostScript first appeared. "Screen fonts" are NOT
- just that. They are bitmap fonts and are suitable for display or printing
- on *any* 72 dpi (or thereabouts) imaging device, including the Mac screen
- and also including the ImageWriter printer and numerous third-party
- dot-matrix printers.
-
- In addition, a bitmap font (that's the right thing to call it) can be used
- on a device with some other dot density to print at some other size -- this
- is how the LaserWriter IISC worked, and this is how the ImageWriter worked
- in its 144 dpi and 160 dpi modes. Of course this is all different since
- TrueType appeared.
-
- TrueType and PostScript fonts, on the other hand, are curve descriptions
- that can be used to display or print characters on *any* imaging device
- regardless of dot density, assuming the necessary software is present.
- This includes the Mac screen and also the ImageWriter, the StyleWriter, the
- LaserWriters, and many other devices.
-
- Incidentally, most of the imaging devices we computer geeks use are bitmap
- devices, and that means that TrueType and PostScript work by generating
- bitmap fonts from their curve descriptions -- or, under some circumstances,
- using an existing bitmap font to get the best quality.
-
- There's no such thing as a "printer font" or a "screen font," unless you
- define them by how they happen to be used in a particular set of
- circumstances on a particular system.
-
- --
-
- David Casseres
- Exclaimer: Wow!
-