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- From: neuss@igd.fhg.de (Christian Neuss )
- Newsgroups: comp.sys.next.hardware
- Subject: Re: HP LaserJet IIP/IIIP Printer confusion
- Message-ID: <neuss.713626500@carioca>
- Date: 12 Aug 92 13:35:00 GMT
- References: <1992Aug9.231425.5494@tamsun.tamu.edu>
- Sender: news@igd.fhg.de
- Lines: 61
-
- wolter@cs.tamu.edu (Jan Wolter) writes:
-
- >I shopping for a printer for my NeXT, and have been digging through my
- >archives of old comp.sys.next articles and have turned up plenty of
- >confusion on the HP LaserJet Printers. There is lots of reasonably
- >consistant information on cables and printcaps, but there is also talk
- >of a filter called "djf" that had be written for the DeskJet printer
- >but could be modified to work with the LaserJet. This included claims
- >of print speeds like 10 minutes per page which did not impress me. I
- >tried to follow up on this by getting "djf" from the archives, but it
- >appears no longer to be there.
-
- >Can someone clarify this? Do I need more than the proper cable and
- >printcap to attach a LaserJet IIP or IIIP to my slab? Can I get reasonable
- >print quality and speed?
- Yes. No. No. :-)
-
- OK.
- As far as I know, the IIP and the IIIP have identical hardware.
- The difference is the PCL level (which is the HP page description
- language): The IIIP has scaleable builtin fonts, which is useless
- for us NeXTers.
- The main (software) difference between the DeskJet and the LaserJet
- is that the LaserJet has to store the complete Bitmap in main
- memory, while the DeskJet can directly print it line for line.
- The DeskJet is (due to a lack of mem) not able to download fonts,
- which the LaserJet can do. And this is the key to the speed
- problems: A program which uses the DeskJet has to transfer the whole
- page as a bitmap, while a program for the LaserJet can upload
- the fonts that it needs and thus speed up the Transfer. This approach
- works fine with some TeX drivers, since TeX uses bitmapped fonts. When
- printing out a document, these fonts are downloaded first. After that,
- printing is extremely fast. But unless you intend to print out standard
- TeX docs, this doesn't help you much. If you use a non-PS printer,
- the bottleneck for the printing speed the serial interface, not the
- printer hardware. So, using a LaserJet instead of a DeskJet will
- give you absolutely *no* *speedup*.
-
- Another thing. You will have to upgrade your IIP/IIIP's memory, if
- you print complex pages. This adds to the price!
-
- My advice is to buy a PostScript printer or the NeXT printer, if you
- need high quality, and to go for the DeskJet if you need a low cost,
- acceptable quality solution. Buing the LaserJet will leave you
- unhappy in the long run: It costs more, but printing is still very slow.
-
- BTW, the djf package is still on the archives. Get DeskJet2.01.tar.Z
- from sonata.cc.purdue.edu, in /pub/next/2.0-release/source. It works
- fine, but please play around with printing grey shades. I suspect
- that they don't look identical to what a PostScript printer will
- produce (a very coarse dithering). But maybe there are options
- to control this behavior, I will have to take a closer look.
- Can someone on the net help?
-
- Hope that helped,
- [ Hi bbum! You out there? ;-) ]
-
- Chris
- /*
- * Christian Neuss % neuss@igd.fhg % ..in the humdrum
- */
-