Re: Xerox and Phasermatch
Re: Xerox and Phasermatch
- Subject: Re: Xerox and Phasermatch
- From: Marco Ugolini <email@hidden>
- Date: Fri, 13 Jan 2006 02:22:53 -0800
In a message dated 1/12/06 10:55 PM, Thomas Holm/pixl wrote:
>
> Guys
>
> A prospective customer asks if I can improve his simulations
> (newsprint on Xerox Phaser 7550) as they have trouble with the
> graybalance. The guy has profilemaker himself and have built custom
> profiles on the Phaser which is linked together with the official
> IFRA newspaper profile. The problem is the grays ( a 35% black source
> will become brown).
> They have tried to build a devicelink in Phasermatch from the printer
> profile to the printer profile (which should be a null transform) but
> this ends up making things bluish. This of course makes Phasermatch
> a likely suspect.
>
> The question I guess, is whether it's possible to upload custom
> devicelink profiles to Phaser Match (apparently the software says it
> can only use Phasermatch built profiles)?
> A bi question is if this isn't possible; can you edit a source
> profile and have the edit carry over when it's is made into a
> devicelink in Phasermatch?!?
>
> I only have limited knowledge about Phasermatch, so don't know the
> limitations/problems.
>
> Any hints are most welcome...
Hi Thomas.
I was able to profile the Phaser 7750 for 2 of my clients by first using the
calibration tool in Phaser Match to linearize the device (print a
linearization target, measure it, send the patch data to the printer).
After that, I would use the printer driver (Mac OS X) in conjunction with
Photoshop to print a CMYK test chart (ECI2002CMYK) on the client's paper of
choice, making sure to turn off all color controls in the driver. In the
"Image Quality" submenu within the printing dialog box, I chose "Standard"
in the "Print Quality" entry: that was my best guess of a non-active choice
color-wise. Judging from the results, I believe I was correct.
After the test chart was printed, I would measure it with my EyeOne Pro
using ProfileMaker with the "Correct for Optical Brightener" option checked.
(With laser printers, I am of the opinion that the appearance of a print
does not drift enough --if at all-- to warrant waiting before measuring, as
is instead necessary to do with inkjet printers.)
As Karsten also says in another message on this forum, as a general rule
it's not a good idea to use Phaser Match to generate and/or activate the
printer profile for this printer. The quality obtained by using ProfileMaker
in conjunction with the system driver is far superior. And since you say
that your client has ProfileMaker, I see that as a far wiser choice.
The results I obtained with my clients were good, and the neutrals, both by
my estimation and the clients' own, were within acceptable tolerances,
though not perfect. I believe that laser printers are generally not as
accurate in their color results as inkjets are capable of being. To that one
must also add the fact that they are far more susceptible to factors like
ambient temperature and humidity.
Inkjets are more stable. Keeping a laser printer in good working order, on
the other hand, requires daily controls, and is definitely harder than is
the case with most inkjet printers, though I have a feeling that more recent
laser devices like the 7750 are somewhat better in that respect than
previous ones.
As for the use of device links, I am not able to help you there. I have not
entered that field yet, and I am unable to contribute.
Good luck.
--------------
Marco Ugolini
Mill Valley, CA
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden