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- Xref: sparky comp.periphs.scsi:5540 comp.periphs.printers:3363
- Newsgroups: comp.periphs.scsi,comp.periphs.printers
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!sgiblab!sgigate!sgi!twilight!story
- From: story@sgi.com (David (Duis) Story)
- Subject: Re: SCSI Printers
- Message-ID: <shg532c@twilight.wpd.sgi.com>
- Keywords: SCSI printers
- Sender: news@twilight.wpd.sgi.com ( CNews Account at twilight.wpd.sgi.com )
- Organization: Silicon Graphics, Inc.
- References: <BxsI3M.2FC@research.canon.oz.au>
- Date: Wed, 18 Nov 92 21:51:02 GMT
- Lines: 41
-
- In article <BxsI3M.2FC@research.canon.oz.au> andy@research.canon.oz.au (Andy Newman) writes:
- >
- >I'm interested in finding out about how printers operate over the SCSI
- >bus. I'm not talking about the use of SCSI for a printer's own use
- >(i.e. to support a disk for font and image storage) but as the main
- >interface to the printer. The only SCSI connected printer device's
- >that I know anything about use SCSI to transfer rasters (framebuffers)
- >from the RIP to the print engine. Is anyone aware of other uses of
- >SCSI in printers? For example are there any PostScript printers out
- >there that use SCSI as the main interface.
-
-
- Seiko ships several printers which use an SCSI-2 compliant interface,
- and which support their CHGL-2 printer control language (think of it
- as something like PCL).
-
- SRS Imaging ships several SCSI compatible printers which currently
- emulate tape devices in order to get around the very vague SCSI-2
- specification for printers.
-
- You should really get a copy of the SCSI-2 spec: you might try
- "Global Engineering Documents" in Los Angeles for a copy.
- (800)854-7179, Irvine, CA.
-
- For more information on a particular printer you can get a copy of the
- SCSI spec for their interfaces.
-
- In general, SCSI is just a bus with some messages defined. You still
- have to interpret the PostScript at one end or the other. If your
- target device interprets the PostScript then it's likely to be so slow
- that having the SCSI bus' extra bandwidth won't make a lot of
- difference. If your host does the RIP, the bandwidth is really
- necessary to keep up with a fast engine.
-
- Cheers,
-
- David Story Silicon Graphics, Inc.
- story@bent.wpd.sgi.com Mountain View, California
-
- I've changed my name, so duis@sgi.com may bounce, please use story@sgi.com.
-
-