[comp.sys.mac] Imagewriter II vs. LQ

granston@uicsrd.csrd.uiuc.edu (07/19/89)

Can someone post a comparison of the Imagewriter LQ to the Imagewriter
II? How does the Imagewriter LQ compare to the Imagewriter II
in terms of both quality and speed? I have a sample of Imagewriter II
output, but I can't find an Imagewriter LQ to try out.
How much better is the LQ printing quality? I've heard rumors
that the LQ in it's highest quality printing mode is "virtually
too slow to be usable"? Can anyone confirm or deny this?

I couldn't find a previous notestring discussing this.
However, if there has been a recent discussion on this topic,
could someone please e-mail me a copy of the notestring?

Thanks in advance!

Lani Granston
granston@uicsrd.csrd.uiuc.edu

steve@violet.berkeley.edu (Steve Goldfield) (07/20/89)

In article <43100013@uicsrd.csrd.uiuc.edu> granston@uicsrd.csrd.uiuc.edu writes:
#>
#>Can someone post a comparison of the Imagewriter LQ to the Imagewriter
#>II? How does the Imagewriter LQ compare to the Imagewriter II
#>in terms of both quality and speed? I have a sample of Imagewriter II
#>output, but I can't find an Imagewriter LQ to try out.
#>How much better is the LQ printing quality? I've heard rumors
#>that the LQ in it's highest quality printing mode is "virtually
#>too slow to be usable"? Can anyone confirm or deny this?

#>Lani Granston

I've only used an Imagewriter II a couple of times and haven't
experimented a lot with its quality. The LQ when it's working
right is almost as good as a LaserWriter, over 200 elements
per inch. It isn't terribly slow in highest quality mode; it's
slower for graphics than for text, but then so is any other
printer.

Steve Goldfield

jb28+@andrew.cmu.edu (Jeffrey Joseph Barbose) (07/22/89)

Lani,

The Imagewriter II, in Best mode, uses screen fonts which are twice the
displayed size, scaling them down.  In other words, normally, screen fonts
have a resolution of 72 dots per inch.  2X fonts, scaled down, have a printed
resolution of 144 dpi.

The Imagewriter LQ, in Best mode, uses 3X fonts and scales them down to a
third.

E.g., to Print 24-pt characters, you'd need a 72-pt size of the same font.
The printed image (LQ) will be 24-pt characters, but with a resolution of
216 dpi.  The Apple Laserwriters have a resolution of 300 dpi, so this may
give you some idea of the quality of the LQ. (about half-way between IW II
best mode and LaserWriter output).

As for speeds, I'm not really sure, but I think that in printer draft mode,
the IW II, is about 180 char per sec., and the LQ might be about 300 cps.

Hope this helps,

Jeff