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Toner Ink Separation

Toner Ink Separation

2019-01-01 by peterdesmidt@...

I'm trying to get a 4880 up with Carbon 6 VT. The other day, I mixed up the Canon toner, but I used the old lighter version by mistake. I mixed the inks with a magnetic stirrer for about 10 minutes, and I used MIS's version C6c, as that's what I had on hand. In the process of working everything out, I wasn't getting very much blue. I figured out my strength mistake, and so I mixed up a new batch. When I took the old toner cartridge out, I noticed that all of the pigment had separated from the base and settled on the bottom of the cartridge, the latter is a brand new Inkjetmall cartridge. The ink was in the cartridge for at most 3 days. Any ideas?


Re: [Digital BW] Toner Ink Separation

2019-01-01 by Paul Roark

I'm not sure what would cause that. I've been using the toner mix for several years with very consistent results. I use c6b base version (home mixed), but I doubt the minor difference between the two would cause any difference is settlement rates. Some time ago I did a centrifuge test of one of the thermal pigments (I forget if it was HP or Canon) in the base, and it settled less in the generic base than it it's native base. I assume the reason was that the generic base is more viscous due to it being made for Epson printers as opposed to the thermal head printers.

I hope the MIS mixed base uses the correct formula. I think they post the formula on their web page (but that does not guarantee the employee did it right)

I'll probably do a centrifuge test of the current toner & base just to be sure. I'll post what I find.

Over the years you've had more problems than anyone else I know of with these inks. I've wondered if your water is a source of the problems, but if this base was shipped from MIS, that would exclude that potential cause.

Paul
www.PaulRoark.com
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On Tue, Jan 1, 2019 at 2:42 PM peterdesmidt@... [DigitalBlackandWhiteThePrint] <;DigitalBlackandWhiteThePrint@yahoogroups.com> wrote:

I'm trying to get a 4880 up with Carbon 6 VT. The other day, I mixed up the Canon toner, but I used the old lighter version by mistake. I mixed the inks with a magnetic stirrer for about 10 minutes, and I used MIS's version C6c, as that9;s what I had on hand. In the process of working everything out, I wasn't getting very much blue. I figured out my strength mistake, and so I mixed up a new batch. When I took the old toner cartridge out, I noticed that all of the pigment had separated from the base and settled on the bottom of the cartridge, the latter is a brand new Inkjetmall cartridge. The ink was in the cartridge for at most 3 days. Any ideas?


Current variable tone inkset - "7800 Glossy Carbon Variable Tone"

2019-01-02 by Paul Roark

This is the inkset that I have used very successfully since 2016:

http://www.paulroark.com/BW-Info/7800-Glossy-Carbon-Variable-Tone-2016.pdf

It will soon be in both my 7800 and 9800. (A failed monotone inkset currently in the 7800 is going down the drain.) I keep looking and trying approaches that might seem easier, but so far this one continues to be the best performing one I've used. Profiles for it are in a zip file that is linked to the PDF.

Note that there is no longer any advantage to using dilute Eboni for matte printing. The new Eboni is not more neutral than the glossy compatible inks. As such, I no longer use Eboni-6. The Glossy Carbon VT can do it all (for B&W, of course).

Paul
www.PaulRoark.com &
http://www.paulroark.com/BW-Info/


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Re: [Digital BW] Toner Ink Separation

2019-01-03 by peterdesmidt@...

Thanks, Paul. Before I had problems with organic growth in the inks. That's why I switched to buying the base instead of making it.

Regarding the toner ink: is it visible with a nozzle check? Mine isn't, but that might be due to the previous settled pigment clogging that channel of the head.

Re: [Digital BW] Toner Ink Separation

2019-01-03 by Paul Roark

I think the blue toner shows up OK in the nozzle check.  Below (but it
might be deleted on the forum) and at
http://www.paulroark.com/BW-Info/GCVT-9800-nozzle-chk.jpg I have put a scan
of a nozzle check of my 9800 that has the Glossy Carbon Variable Tone
inkset in it.  The toner pattern is on the right.  All the other inks are
100% carbon.

Paul
www.PaulRoark.com


[image: image.png]

On Thu, Jan 3, 2019 at 12:35 PM peterdesmidt@...
[DigitalBlackandWhiteThePrint] <DigitalBlackandWhiteThePrint@yahoogroups.com>
wrote:

>
>
> Thanks, Paul.  Before I had problems with organic growth in the inks.
> That's why I switched to buying the base instead of making it.
>
> Regarding the toner ink: is it visible with a nozzle check?   Mine isn't,
> but that might be due to the previous settled pigment clogging that channel
> of the head.
> 
>


[Non-text portions of this message have been removed]

Re: [Digital BW] Toner Ink Separation

2019-01-04 by peterdesmidt@...

Thanks, Paul. Yeah, I'm not getting that. That channel, the LLK, appears to be clogged. I've installed cleaning cartridges, and hopefully after a few days of soaking, it'll clear up. If not, I'll put the toner in a different channel.

Re: [Digital BW] Toner Ink Separation

2019-01-04 by Paul Roark

I recall some years ago a member of this forum who lived in a very dry climate had more than the usual issues. What is the humidity in your area? (I live in a moderate climate, so I don't experience super-dry-climate inkjet problems.)

It sounds, however, like you might be having separation issues. I don't see how that would relate to humidity.

Paul
www.PaulRoark.com
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On Fri, Jan 4, 2019 at 8:21 AM peterdesmidt@charter.net [DigitalBlackandWhiteThePrint] <DigitalBlackandWhiteThePrint@yahoogroups.com> wrote:

Thanks, Paul. Yeah, I'm not getting that. That channel, the LLK, appears to be clogged. I've installed cleaning cartridges, and hopefully after a few days of soaking, it'll clear up. If not, I'll put the toner in a different channel.

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