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- From: carlip@oucsace.cs.ohiou.edu (Walter C3arlip)
- Newsgroups: comp.sys.mac.misc
- Subject: Laser printers
- Message-ID: <1993Jan7.014407.14128@oucsace.cs.ohiou.edu>
- Date: 7 Jan 93 01:44:07 GMT
- Organization: Ohio University Mathematics
- Lines: 31
-
- Anyone out there know the details of laser printer workings?
-
- I've been considering getting an HP Laserjet 4m and am curious:
-
- * Allegedly the 4m uses a new Cannon engine (the BX maybe?) that
- provides 'true' 600 x 600 dpi resolution [though Macworld lists
- it as 600 x 300 dpi].
-
- * The two new Apple Laserwriters advertise that they also provide
- 600 x 600 dpi printing with '91 grayscales' resulting in apparant
- resulation of 1000 dpi. I'm suspicious, though, since the engine
- used is the Cannon EX (which I thought was 300dpi) and the upgrade from
- 3000 to 6000 dpi seems to involve only memory and software.
-
- I'm interested in what is really going on here.
- Can the apple printers actually produce different grays of dots or are
- the grays created in the usual way by mhalftone grids? If so,
- wouldn't the additional gray shades by countered by the larger size
- of the basic gray dot?
- If the old 300dpi laser engines could be made to generate 600dpi (allegedly
- by adjusting placement of the lasers more carefully?) what is really
- different in the new engine?
-
- Thanks for any information you might have!
-
- --Walter
- --
- _____________________________________________________________________________
- Walter C3arlip **** carlip@ace.cs.ohiou.edu ****
- (the "3" is silent)
- _____________________________________________________________________________
-