Date: Tue, 5 May 2020 09:56:57 +0200 From: Polytropon <freebsd@edvax.de> To: Kurt Hackenberg <kh@panix.com> Cc: freebsd-questions@freebsd.org Subject: Re: Brother HL-L2340D printer and lpd? Message-ID: <20200505095657.b436931b.freebsd@edvax.de> In-Reply-To: <9992c5ca-fdac-7a62-b0e4-d33afaeb042d@panix.com> References: <20200503171259.GA48627@admin.sibptus.ru> <20200503192444.2d700440.freebsd@edvax.de> <ec10816a-15d1-e947-e032-9ad024c044d6@pinyon.org> <20200503185521.GB52059@admin.sibptus.ru> <20200504085053.9bcf8d9d.freebsd@edvax.de> <9992c5ca-fdac-7a62-b0e4-d33afaeb042d@panix.com>
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On Mon, 4 May 2020 15:10:58 -0400, Kurt Hackenberg wrote: > On 2020-05-04 02:50, Polytropon wrote: > > > However, it's really scary that a printer like the one mentioned > > here does not seem to understand ASCII text, even though it > > supports PCL standard (as shown on the specification page). > > > PCL was originally ASCII with proprietary escape sequences mixed in, but > that spec page says that printer understands PCL 6, which apparently is > a stack-based graphics language like PostScript, except binary. It's > supposed to include backward compatibility with PCL 5, but doesn't > always. So possibly what that printer understands has nothing to do with > ASCII. > > https://en.wikipedia.org/wiki/Printer_Command_Language > > I don't like it either, but there is heavy pressure to hold down the > cost of printers. Thank you, that is an important note! PCL backward compatibility might be the reason why the printer accepts PCL intended for a Laserjet 4 (I don't know, maybe PCL 3?), but doesn't actually print anything. So the printer filter will have to explicitely output PCL 6. That could be achieved using a different output device for gs, or using CUPS in combination with the PPD file provided by Brother. This of course brings you all the "joy" of using CUPS... ;-) Maybe this thread can also help: https://lists.freebsd.org/pipermail/freebsd-questions/2017-July/277994.html -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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