Postscript hel p please?

R
Posted By
Ryadia_
Sep 24, 2004
Views
396
Replies
11
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Closed
I’ve just set up new workstation to drive a Xerox 410,"Docu-printer". It’s got Postscript option. When I send it output from Photoshop it has a different colour to the presently working system with calibrated monitor, inkjet and laser printer. Is there something I’ve missed here in the postscript driver?

PS CS Colour management is consistent across several printers so I presume it to be correct. I am using sRGB work space to narrow the contrast range closer to my Minolta 2300 laser and the print options are, "same as source", letting the Minolta driver use it’s ICC profile. The HP printer driver is mystery bag stuff right now. It does it’s own calibration for the paper used and is impeccable.

This gets me as close as I need to printing what is on the screen. When I set-up the Xerox with a generic Postscript driver, the colour is quite different, tending to yellow. If anyone with experience in this problem can guide me I would be grateful.

Ryadia

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H
Hecate
Sep 25, 2004
On Sat, 25 Sep 2004 06:54:17 +1000, Ryadia
wrote:

I’ve just set up new workstation to drive a Xerox 410,"Docu-printer". It’s got Postscript option. When I send it output from Photoshop it has a different colour to the presently working system with calibrated monitor, inkjet and laser printer. Is there something I’ve missed here in the postscript driver?

PS CS Colour management is consistent across several printers so I presume it to be correct. I am using sRGB work space to narrow the contrast range closer to my Minolta 2300 laser and the print options are, "same as source", letting the Minolta driver use it’s ICC profile. The HP printer driver is mystery bag stuff right now. It does it’s own calibration for the paper used and is impeccable.

This gets me as close as I need to printing what is on the screen. When I set-up the Xerox with a generic Postscript driver, the colour is quite different, tending to yellow. If anyone with experience in this problem can guide me I would be grateful.
I thought you already knew everything?

Anyway, sRGB isn’t the ideal colour space. Whilst it’s narrower than AdobeRGB, it doesn’t map as well to the CMYK colour space your printers use. Consequently, your out of gamut range is larger than if you used AdobeRGB. Try that and see if it helps.



Hecate – The Real One

veni, vidi, reliqui
R
Ryadia_
Sep 25, 2004
Hecate wrote:

On Sat, 25 Sep 2004 06:54:17 +1000, Ryadia

I thought you already knew everything?

Anyway, sRGB isn’t the ideal colour space. Whilst it’s narrower than AdobeRGB, it doesn’t map as well to the CMYK colour space your printers use. Consequently, your out of gamut range is larger than if you used AdobeRGB. Try that and see if it helps.

I know everything about what I know everything about and nothing about what I know nothing about. Your suggestion has worked, thank you. My problem now is the Minolta is off colour!

Ryadia
N
nomail
Sep 25, 2004
Ryadia wrote:

I’ve just set up new workstation to drive a Xerox 410,"Docu-printer". It’s got Postscript option. When I send it output from Photoshop it has a different colour to the presently working system with calibrated monitor, inkjet and laser printer. Is there something I’ve missed here in the postscript driver?

PS CS Colour management is consistent across several printers so I presume it to be correct. I am using sRGB work space to narrow the contrast range closer to my Minolta 2300 laser and the print options are, "same as source", letting the Minolta driver use it’s ICC profile. The HP printer driver is mystery bag stuff right now. It does it’s own calibration for the paper used and is impeccable.

This gets me as close as I need to printing what is on the screen. When I set-up the Xerox with a generic Postscript driver, the colour is quite different, tending to yellow. If anyone with experience in this problem can guide me I would be grateful.

If your source is sRGB and you send the image to the printer using "Same as source", it means you’ve effectively turned off color management in Photoshop completely, to leave it to the printer driver. You send unaltered sRGB data to the printer. If that works with the other two printers, that’s fine. If it doesn’t work with the Xerox printer, you should do a soft proof first and then (once you’re happy with the results) use your Xerox profile in stead of ‘Same as source".


Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
H
Hecate
Sep 26, 2004
On Sat, 25 Sep 2004 11:34:14 +1000, Ryadia
wrote:

Hecate wrote:

On Sat, 25 Sep 2004 06:54:17 +1000, Ryadia

I thought you already knew everything?

Anyway, sRGB isn’t the ideal colour space. Whilst it’s narrower than AdobeRGB, it doesn’t map as well to the CMYK colour space your printers use. Consequently, your out of gamut range is larger than if you used AdobeRGB. Try that and see if it helps.

I know everything about what I know everything about and nothing about what I know nothing about. Your suggestion has worked, thank you. My problem now is the Minolta is off colour!
LOL!

It’s a common error to think that sRGB will fit better because it’s narrower. I made the same mistake myself when I first started.

OK. With the Minolta – I assume because it’s a postscript printer (and I may be wrong here) it doesn’t require an RGB image the same as an inkjet. If so, when you’ve finished working on the image try converting it to CMYK. With four colours you have more chance of getting it right. (And yes, for anyone about to say so, I know black isn’t really a colour <g>).

If you don’t want to do that, make sure you soft proof first so you can see where the problems are and adjust for them. If the adjustments are consistent you can set up a custom print for that particular printer.



Hecate – The Real One

veni, vidi, reliqui
F
Frans
Sep 26, 2004
"Hecate" wrote…
On Sat, 25 Sep 2004 11:34:14 +1000, Ryadia
wrote:

Hecate wrote:

On Sat, 25 Sep 2004 06:54:17 +1000, Ryadia

I thought you already knew everything?

Anyway, sRGB isn’t the ideal colour space. Whilst it’s narrower
than
AdobeRGB, it doesn’t map as well to the CMYK colour space your printers use. Consequently, your out of gamut range is larger than
if
you used AdobeRGB. Try that and see if it helps.

I know everything about what I know everything about and nothing
about
what I know nothing about. Your suggestion has worked, thank you. My problem now is the Minolta is off colour!
LOL!

It’s a common error to think that sRGB will fit better because it’s narrower. I made the same mistake myself when I first started.
OK. With the Minolta – I assume because it’s a postscript printer (and I may be wrong here) it doesn’t require an RGB image the same as an inkjet. If so, when you’ve finished working on the image try converting it to CMYK. With four colours you have more chance of getting it right. (And yes, for anyone about to say so, I know black isn’t really a colour <g>).

Within the printer is a RGB-to-CMYK converter always active. So converting an illustration into CMYK will result into RGB-conversion to make printing possible.
Better sugestion is to get the proper driver inf-file for the Minolta

Frans
R
Ryadia_
Sep 26, 2004
Johan W. Elzenga wrote:

Ryadia wrote:

If your source is sRGB and you send the image to the printer using "Same as source", it means you’ve effectively turned off color management in Photoshop completely, to leave it to the printer driver. You send unaltered sRGB data to the printer. If that works with the other two printers, that’s fine. If it doesn’t work with the Xerox printer, you should do a soft proof first and then (once you’re happy with the results) use your Xerox profile in stead of ‘Same as source".
So you haven’t really given up on me at all, Johan? Thanks.

Ryadia
N
nomail
Sep 26, 2004
Ryadia wrote:

Johan W. Elzenga wrote:

Ryadia wrote:

If your source is sRGB and you send the image to the printer using "Same as source", it means you’ve effectively turned off color management in Photoshop completely, to leave it to the printer driver. You send unaltered sRGB data to the printer. If that works with the other two printers, that’s fine. If it doesn’t work with the Xerox printer, you should do a soft proof first and then (once you’re happy with the results) use your Xerox profile in stead of ‘Same as source".
So you haven’t really given up on me at all, Johan? Thanks.

I’m too good for this world… 😉


Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
R
Ryadia_
Sep 26, 2004
Frans wrote:
Within the printer is a RGB-to-CMYK converter always active. So converting an illustration into CMYK will result into RGB-conversion to make printing possible.
Better sugestion is to get the proper driver inf-file for the Minolta
Frans

What is missing here Fran, is that I have a calibrated system, driving a Minolta laser, an Epson r310 and a HP designjet wide format printer. Up to the point I introduce a Xerox digital printer (basically a laser printer) the system works fine. As soon as I want to print to this postscript printer, I get a colour imbalance in that printer. If I follow Hecate’s advise I can improver the colour of the output but not as much as I’m looking for… Doing that, breaks the previous harmonious system.

The real solution is to hook up yet another computer and dedicate it to this printer. What I am trying to avoid is buying another Photoshop license because I has all my licenses working. So… To avoid spending a couple of grand, I’m trying to make it all happen with what I currently have. Hecate’s suggestion while getting further along the track, is not an eloquent enough one. It requires the swapping between profiles.

It seems to me that the postscript printer driver of Xerox’s is not happy with sRGB input. It is happier with AdobeRGB input but not happy enough. There are about 25 postscript drivers in Win2k for Xerox Docu-printers. I will if I have to, try each one but my OP was in the hope someone might know which one to use under my circumstances.

Ryadia
F
Frans
Sep 26, 2004
"Ryadia" wrote:
Within the printer is a RGB-to-CMYK converter always active. So converting an illustration into CMYK will result into RGB-conversion
to
make printing possible.
Better sugestion is to get the proper driver inf-file for the
Minolta
Frans

What is missing here Fran, is that I have a calibrated system, driving
a
Minolta laser, an Epson r310 and a HP designjet wide format printer.
Up
to the point I introduce a Xerox digital printer (basically a laser printer) the system works fine. As soon as I want to print to this postscript printer, I get a colour imbalance in that printer. If I follow Hecate’s advise I can improver the colour of the output but not as much as I’m looking for… Doing that, breaks the previous
harmonious
system.

The real solution is to hook up yet another computer and dedicate it
to
this printer. What I am trying to avoid is buying another Photoshop license because I has all my licenses working. So… To avoid spending
a
couple of grand, I’m trying to make it all happen with what I
currently
have. Hecate’s suggestion while getting further along the track, is
not
an eloquent enough one. It requires the swapping between profiles.
It seems to me that the postscript printer driver of Xerox’s is not happy with sRGB input. It is happier with AdobeRGB input but not happy enough. There are about 25 postscript drivers in Win2k for Xerox Docu-printers. I will if I have to, try each one but my OP was in the hope someone might know which one to use under my circumstances.
Ryadia

Test the PS-output with Acrobat distiller. When the colors in the pdf look fine, the PostScript-out is good and so should the printer’s output be. When not, it is the driver. Ask the Xerox representative. But don’t sent RGB to a PS-printer and expect anything good from this, I think.

Frans
N
nomail
Sep 26, 2004
Ryadia wrote:

What is missing here Fran, is that I have a calibrated system, driving a Minolta laser, an Epson r310 and a HP designjet wide format printer. Up to the point I introduce a Xerox digital printer (basically a laser printer) the system works fine. As soon as I want to print to this postscript printer, I get a colour imbalance in that printer. If I follow Hecate’s advise I can improver the colour of the output but not as much as I’m looking for… Doing that, breaks the previous harmonious system.

Not necessarily. You could use AdobeRGB *only* if you intend to print to the Xerox printer. Just use "Convert to profile". There is no reason to change your entire workflow to AdobeRGB if you have a good working system based on sRGB.

The real solution is to hook up yet another computer and dedicate it to this printer.

That would be overkill. If you can setup a good workflow on that new computer, you can also set that up on the old one. Again, don’t change your entire workflow, just use different ones for different printers.


Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
MR
Mike Russell
Sep 27, 2004
Ryadia wrote:
I’ve just set up new workstation to drive a Xerox 410,"Docu-printer". It’s got Postscript option. When I send it output from Photoshop it has a different colour to the presently working system with calibrated monitor, inkjet and laser printer. Is there something I’ve missed here in the postscript driver?

PS CS Colour management is consistent across several printers so I presume it to be correct. I am using sRGB work space to narrow the contrast range closer to my Minolta 2300 laser and the print options are, "same as source", letting the Minolta driver use it’s ICC profile. The HP printer driver is mystery bag stuff right now. It does it’s own calibration for the paper used and is impeccable.
This gets me as close as I need to printing what is on the screen. When I set-up the Xerox with a generic Postscript driver, the colour is quite different, tending to yellow. If anyone with experience in this problem can guide me I would be grateful.

Hecate is certainly someone to listen to carefully. but I doubt that switching your working space from sRGB to Adobe RGB would get rid of a color cast.

If you are using PhotoShop’s "Same as Source" option when printing, the postscript driver needs to be configured either to use a profile itself, or leave color management to the printer driver. If neither of these is true, you could get uncalibrated output. Or you could be double profiling, applying the correct profile both in PhotoShop and by the printer driver after PostScript interpretation.

The test for both of these is to print from Photoshop with appropriate options to simulate the problem, and see if the printout matches what you get when printing via PostScript. To check for no profile at all, print using no color management from your working color space. To test for double profiling, manually convert to the printer profile, assign your working space, print using Printer Color Management, and see if it matches the PostScript output.

There are other possibilities – for example are you using PostScript in order to print directly from CMYK?

Try sending your question to comp.publish.prepress and see if anyone there is familiar with this printer.

All that said, if switching to Adobe RGB fixes your problems, you do have a solution that works, and more power to you.


Mike Russell
www.curvemeister.com
www.geigy.2y.net

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