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Using QTR to print color with defective head

Using QTR to print color with defective head

2015-02-01 by Bart Wybouw

Hi all,

someone pointed me to QTR and this forum for the following question.

Apparently I would be able to use QTR to „reconfigure the colors” on a print head.

What I mean with that is this :

On a head with a defective color/nozzle set, I could redirect that color to another set of nozzles.
e.g. when the Cyan is defective, I could choose to stop using the orange and green channels and use one of those to print the cyan color.

Any pointers on any procedures or documentation in that direction would be welcomes.

Kindest regards,

Bart

Re: [QuadtoneRIP] Using QTR to print color with defective head

2015-02-01 by Paul Roark

This works only for black and white. QTR converts the color image to B&W.

Paul
www.PaulRoark.com
Show quoted textHide quoted text
On Sun, Feb 1, 2015 at 6:26 AM, Bart Wybouw bart.wybouw@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
Hi all,

someone pointed me to QTR and this forum for the following question.

Apparently I would be able to use QTR to „reconfigure the colors” on a print head.

What I mean with that is this :

On a head with a defective color/nozzle set, I could redirect that color to another set of nozzles.
e.g. when the Cyan is defective, I could choose to stop using the orange and green channels and use one of those to print the cyan color.

Any pointers on any procedures or documentation in that direction would be welcomes.

Kindest regards,

Bart

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Re: Using QTR to print color with defective head

2015-02-02 by jon@...

Hi Bart,

We met at Photokina! It may have been me that suggested this to you. We are mapping out bad channels on X900 and X890 printers by customizing our K7 and K6 curves. But - you can not recover the X900 print head with a bad Cyan channel to print with color.

For your 9900 with a bad Cyan channel - that is normally where we put shade 2. We would map shade 2 to the orange or green channel instead and just null out the Cyan channel.

A lot of Piezography options remain for these printers when you have as few as 5 or 6 working channels.


regards,

Jon Cone
Piezography

Re: [QuadtoneRIP] Re: Using QTR to print color with defective head

2015-02-02 by Mark Savoia

I have been down this road. Jon set me up on my 4900 with only 5 good nozzles for digital negs. It works fine.

Mark
www.stillrivereditions.com
Show quoted textHide quoted text
> On Feb 2, 2015, at 8:50 AM, jon@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
> 
> 
> 
> Hi Bart,
> 
> We met at Photokina! It may have been me that suggested this to you. We are mapping out bad channels on X900 and X890 printers by customizing our K7 and K6 curves. But - you can not recover the X900 print head with a bad Cyan channel to print with color.  
> 
> For your 9900 with a bad Cyan channel - that is normally where we put shade 2. We would map shade 2 to the orange or green channel instead and just null out the Cyan channel. 
> 
> A lot of Piezography options remain for these printers when you have as few as 5 or 6 working channels.
> 
> 
> regards,
> 
> Jon Cone
> Piezography
> 
> 
> 
>

Re: [QuadtoneRIP] Using QTR to print color with defective head

2015-02-04 by William Moritz

Since this has been brought up, I have a 4000 Pro with a clogged/bad yellow head. I have tried all of the usual steps to get it working all to no avail. That being said this is a spare printer and I was thinking of converting it to B&W. If I am understanding correctly I should be able to use this printer for Piezography. This leads to a couple of questions. How do I determine what inks to buy from Cone (I have been a long time user of their color inks in my 9800 and other 4000). Since the 4000 has both Matte and Photo Black channels with the missing yellow do I have 7 channels to work with or only 6 if I wanted to print on glossy/luster.


Thanks in advance for any advice.


Bill
Show quoted textHide quoted text
> On Feb 2, 2015, at 8:56 AM, Mark Savoia mark@stillrivereditions.com [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
>
> I have been down this road. Jon set me up on my 4900 with only 5 good nozzles for digital negs. It works fine.
>
> Mark
> www.stillrivereditions.com <http://www.stillrivereditions.com/>
>
> > On Feb 2, 2015, at 8:50 AM, jon@inkjetmall.com <mailto:jon@...> [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com <mailto:QuadtoneRIP@yahoogroups.com>> wrote:
> >
> >
> >
> > Hi Bart,
> >
> > We met at Photokina! It may have been me that suggested this to you. We are mapping out bad channels on X900 and X890 printers by customizing our K7 and K6 curves. But - you can not recover the X900 print head with a bad Cyan channel to print with color.
> >
> > For your 9900 with a bad Cyan channel - that is normally where we put shade 2. We would map shade 2 to the orange or green channel instead and just null out the Cyan channel.
> >
> > A lot of Piezography options remain for these printers when you have as few as 5 or 6 working channels.
> >
> >
> > regards,
> >
> > Jon Cone
> > Piezography
> >
> >
> >
> >
>
>
>

Re: [QuadtoneRIP] Using QTR to print color with defective head

2015-02-04 by John Labovitz

I’ve got a 4000 that I bought used for $100 because it had a bad magenta channel. I used it for years with a 4- or 5-tone QTR setup, and mostly it worked well. But finally it got to the point where it would no longer perform a nozzle/head alignment, due to the fact that the optical sensor couldn’t deal with the bum channel and would try but fail with the alignment. So this is something to be aware of. Remapping to avoid the bad channels is certainly worth a try if you’ve already got the printer (and don’t mind messing with profiling), but don’t assume that you’ll get indefinite life out of it.

—John
Show quoted textHide quoted text
On Feb 3, 2015, at 9:54 PM, William Moritz wmoritz@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:

> 
> 
> Since this has been brought up, I have a 4000 Pro with a clogged/bad yellow head. I have tried all of the usual steps to get it working all to no avail. That being said this is a spare printer and I was thinking of converting it to B&W. If I am understanding correctly I should be able to use this printer for Piezography. This leads to a couple of questions. How do I determine what inks to buy from Cone (I have been a long time user of their color inks in my 9800 and other 4000). Since the 4000 has both Matte and Photo Black channels with the missing yellow do I have 7 channels to work with or only 6 if I wanted to print on glossy/luster.
> 
> Thanks in advance for any advice.
> 
> Bill
> 
>> On Feb 2, 2015, at 8:56 AM, Mark Savoia mark@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
>> 
>> I have been down this road. Jon set me up on my 4900 with only 5 good nozzles for digital negs. It works fine.
>> 
>> Mark
>> www.stillrivereditions.com
>> 
>> > On Feb 2, 2015, at 8:50 AM, jon@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
>> > 
>> > 
>> > 
>> > Hi Bart,
>> > 
>> > We met at Photokina! It may have been me that suggested this to you. We are mapping out bad channels on X900 and X890 printers by customizing our K7 and K6 curves. But - you can not recover the X900 print head with a bad Cyan channel to print with color.  
>> > 
>> > For your 9900 with a bad Cyan channel - that is normally where we put shade 2. We would map shade 2 to the orange or green channel instead and just null out the Cyan channel. 
>> > 
>> > A lot of Piezography options remain for these printers when you have as few as 5 or 6 working channels.
>> > 
>> > 
>> > regards,
>> > 
>> > Jon Cone
>> > Piezography
>> > 
>> > 
>> > 
>> > 
>> 
>> 
> 
> 
> 
>

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