Yahoo Groups archive

QTR-Quadtone RIP

Index last updated: 2026-04-28 23:12 UTC

Thread

Gloss Optimizer - MPS Process -

Gloss Optimizer - MPS Process -

2014-03-28 by <rgm0923@...>

I am looking for any hints to get consistent results for the gloss optimizer process using QTR. The GO process is randomly covering all or parts of the print. It will not work consistently. Although tonight, o na print with mostly mid and light tones, it worked perfectly. Then on a print with deep blacks, it was not working again.

Does anyone have any experience and / or solutions for the GO-MPS process using QTR?

Regards

Ralph

Re: Gloss Optimizer - MPS Process -

2014-03-28 by <kendoophoto@...>

Ralph---if you happen to be using a more recent Epson printer such as a 4900, 7890, 7900, 9890, or 9900---it is a known issue with difficulty applying the GO on some prints, particularly in the darker tones. These printers have a sensor that makes it difficult to print over areas that have been printed on before, and stops the printer from applying the GO. Typically, the printer will coat the GO about one half or two thirds the way and then stop. I have found it best to feed the darkest part of the print in first to apply the GO---this is so far the best solution, and sometimes requires several attempts. Paper curl seems to exacerbate the problem. I have not found any other workaround. ken

Re: Gloss Optimizer - MPS Process -

2014-03-28 by R Gregory

Hi ken, thank you for the reply. Our testing is a little different. Last night i successfully applied go to a very light to mid-tone image and had no issues. I kept printing and applying GO and it worked all night. Then I tried an image with a lot of deep black and GO wouldn't work.
Has anyone talked to Epson about removing the sensor in the new models like the 7890?
R

RE: [QuadtoneRIP] Re: Gloss Optimizer - MPS Process -

2014-03-28 by R Gregory

Thank you Bob. I'm starting to wonder if there are different ways to apply GO - like a spray. Thanks for sharing your insights.

R

Sent from Yahoo Mail for iPhone

From: R Gregory To: ;
Subject: [QuadtoneRIP] Re: Gloss Optimizer - MPS Process -
Sent: Fri, Mar 28, 2014 1:48:01 PM

Hi ken, thank you for the reply. Our testing is a little different. Last night i successfully applied go to a very light to mid-tone image and had no issues. I kept printing and applying GO and it worked all night. Then I tried an image with a lot of deep black and GO wouldn't work.
Has anyone talked to Epson about removing the sensor in the new models like the 7890?
R

Re: [QuadtoneRIP] Re: Gloss Optimizer - MPS Process -

2014-03-28 by Ernst Dinkla

On 28-03-14 14:48, R Gregory wrote:
> Hi ken, thank you for the reply.  Our testing is a little different.  Last night i successfully applied go to a very light to mid-tone image and had no issues.  I kept printing and applying GO and it worked all night.  Then I tried an image with a lot of deep black and GO wouldn't work.
>
> Has anyone talked to Epson about removing the sensor in the new models like the 7890?
>
> R
>

A redesign towards an infra red sensor solution would be wiser. Like the 
HP Zs have. Less sensitive to the ink colors but with blacks it still 
can go wrong. That sensor is needed to scan the paper edges so you can 
not go without it.


-- 
Met vriendelijke groet, Ernst

http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
January 2014, 600+ inkjet media white spectral plots.

Re: Gloss Optimizer - MPS Process -

2014-03-28 by <kendoophoto@...>

You have described the issue exactly. There is not a problem with K7 MPS GO when over printing onto lighter or midtones. The sensor only balks when it hits larger areas of deep dark tonalities. My suggestion here is to feed the darker tone side of the image into the printer first. This seems to "get past" that sensor issue, though it is not a 100% solution and sometimes requires multiple attempts and hair-pulling.

You might want to visit the inkjetmall piezography forum where you can find discussion with Jon Cone and Dana C that is helpful is this regard. Dana reports that there is a possible new RIP workaround, but nothing so far as to its feasibility on these new printers.

My guess is that an Epson firmware update could bypass the sensor, but doubtful that Epson would be inclined to do so. Afterall, I doubt they want to help end-users print with 3P inks other than their own, not to mention that K7 Piez B&W printing is an awfully small fine art printing niche.

ken

RE: [QuadtoneRIP] Re: Gloss Optimizer - MPS Process -

2014-03-28 by Elliot Puritz

Yes, there is indeed a spray that one can use.



http://www.hahnemuehle.com/en/digital-fineart/hahnemuehle-protective-spray.html



Although I have not used the product, a very experienced and knowledgeable digital photographer I know has used the product to good advantage.  He tells me that the bronzing and metamerism is removed.  Moreover, there is no possible damage to the print that can occur when feeding the print back through the printer for the GO to be applied.



Elliot
Show quoted textHide quoted text
From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On Behalf Of R Gregory
Sent: Friday, March 28, 2014 10:34 AM
To: QuadtoneRIP@yahoogroups.com
Subject: RE: [QuadtoneRIP] Re: Gloss Optimizer - MPS Process -






Thank you Bob. I'm starting to wonder if there are different ways to apply GO - like a spray. Thanks for sharing your insights.

R <https://overview.mail.yahoo.com?.src=iOS>

Sent from Yahoo Mail for iPhone



  _____

From: R Gregory <rgm0923@...m>;
To: <QuadtoneRIP@yahoogroups.com>;
Subject: [QuadtoneRIP] Re: Gloss Optimizer - MPS Process -
Sent: Fri, Mar 28, 2014 1:48:01 PM






Hi ken, thank you for the reply.  Our testing is a little different.  Last night i successfully applied go to a very light to mid-tone image and had no issues.  I kept printing and applying GO and it worked all night.  Then I tried an image with a lot of deep black and GO wouldn't work.



Has anyone talked to Epson about removing the sensor in the new models like the 7890?



R

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.