Printing and Plotting

Printing and Plotting

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*Jussi
Message 1 of 4 (1,027 Views)

HP-GL/2, HP-RTL - what's the difference?

1027 Views, 3 Replies
10-19-2003 10:37 PM
If I ask others to send plt's as HP-GL/2, never mind what driver, do sheets
print ok?
Should I specify HP DJ xxx or Oce 9800x ?
- What's HP RTL? How is it different from HP-GL/2?

Thanks,
Jussi
*Knopper, Govert J.
Message 2 of 4 (1,027 Views)

Re: HP-GL/2, HP-RTL - what's the difference?

10-19-2003 11:11 PM in reply to: *Jussi
If your plotter or the front-end software for your plotter would be 100%
HPGL/2 compatible (language fully and correctly implemented), the answer
could be a careful "yes". As most non-HP devices have a limited HPGL/2
implementation, it's best to keep the HPGL/2 as simple as possible if you
want a more or less "universal" format. To get the simplest HPGL/2 you
should take take one of AutoCAD's own HDI DesignJet drivers - or if the
device you are using is Oce, an HDI driver for that Oce machine.

HP-RTL is the raster image extension to HPGL/2 which can not handle raster
data itself. Note however that sometimes vector drawings may be printed as
RTL, depending on the driver, or selected settings.

Govert

"Jussi" schreef in bericht
news:E89EBE64B496A5A96B2A68A9107A9244@in.WebX.maYIadrTaRb...
> If I ask others to send plt's as HP-GL/2, never mind what driver, do
sheets
> print ok?
> Should I specify HP DJ xxx or Oce 9800x ?
> - What's HP RTL? How is it different from HP-GL/2?
>
> Thanks,
> Jussi
>
>
*Jussi
Message 3 of 4 (1,027 Views)

Re:

10-20-2003 05:58 AM in reply to: *Jussi
Ok, thanks.

Jussi

"Govert J. Knopper" kirjoitti viestissä
news:1FFD08F0857CE2C605D4CEED05B5DC75@in.WebX.maYIadrTaRb...
> If your plotter or the front-end software for your plotter would be 100%
> HPGL/2 compatible (language fully and correctly implemented), the answer
> could be a careful "yes". As most non-HP devices have a limited HPGL/2
> implementation, it's best to keep the HPGL/2 as simple as possible if you
> want a more or less "universal" format. To get the simplest HPGL/2 you
> should take take one of AutoCAD's own HDI DesignJet drivers - or if the
> device you are using is Oce, an HDI driver for that Oce machine.
>
> HP-RTL is the raster image extension to HPGL/2 which can not handle raster
> data itself. Note however that sometimes vector drawings may be printed as
> RTL, depending on the driver, or selected settings.
>
> Govert
>
> "Jussi" schreef in bericht
> news:E89EBE64B496A5A96B2A68A9107A9244@in.WebX.maYIadrTaRb...
> > If I ask others to send plt's as HP-GL/2, never mind what driver, do
> sheets
> > print ok?
> > Should I specify HP DJ xxx or Oce 9800x ?
> > - What's HP RTL? How is it different from HP-GL/2?
> >
> > Thanks,
> > Jussi
> >
> >
>
>
Contributor
BluScarab
Posts: 13
Registered: ‎12-05-2003
Message 4 of 4 (1,027 Views)

Re: HP-GL/2, HP-RTL - what's the difference?

10-30-2003 11:31 AM in reply to: *Jussi
HP-GL/2 is a vector language driveer for HP plotters. HP-GL/2 can do raster images but the spool file must be downloaded into the plotter entirely before it starts plotting because the print data is not sent in order. Once it is completely downloaded in the plotter, the GL/2 data is then rasterized in the correct order so the plotter can plot the sheet.

HP-RTL is a raster language driver that rasterizes the plot in the workstation and then sends the spool to the plotter. And because the RTL is already rasterized in the proper printing order, the plotter can start plotting while it is still receiving the spool file - sort of like "streaming" the plot file to the plotter. If you have very large color aerial photos to plot, you will never have an out of memory problem on the plotter because the RTL spool file is "streamed" to the plotter as it plots.
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