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Aged pre treatment and pigment inks

 
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Old June 12th, 2020 Jun 12, 2020 10:40:43 AM -   #1 (permalink)
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Default Aged pre treatment and pigment inks

I was just wondering.. with all this lock down, my stocks are aging as we speak. How valid are use by dates on inks and pretreatment. Furthermore, what would happen if they were used? Anyone know?
 
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Old June 12th, 2020 Jun 12, 2020 10:58:46 AM -   #2 (permalink)
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Default Re: Aged pre treatment and pigment inks

Quote:
Originally Posted by SHIMSTAR
I was just wondering.. with all this lock down, my stocks are aging as we speak. How valid are use by dates on inks and pretreatment. Furthermore, what would happen if they were used? Anyone know?
Coagulation. Not a good thing.
Not a big deal for the pretreatment, it may cause crystallization.
Old ink however is a problem. It will clog the filters, and possibly the printhead.
 
Old June 12th, 2020 Jun 12, 2020 8:35:57 PM -   #3 (permalink)
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Default Re: Aged pre treatment and pigment inks

Quote:
Originally Posted by SHIMSTAR
I was just wondering.. with all this lock down, my stocks are aging as we speak. How valid are use by dates on inks and pretreatment. Furthermore, what would happen if they were used? Anyone know?
The white ink should be turned weekly, if you don’t do this the components will split and do not go back correctly no matter what you do. The CMYK and PT will be fine until past the expiry dates.

Using out of date inks is a bit like playing Russian roulette with your print head, if replacing the ink is cheaper than a new print head & dampers that is what you should do to be safe.

Regards

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Old June 13th, 2020 Jun 13, 2020 5:12:57 AM -   #4 (permalink)
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Default Re: Aged pre treatment and pigment inks

I hope a ink manufacture will respond with information as it relates to the chemistry of the ink as well as with impact of storage that is not dark and conditioned. I know this may compromise the planned obsolesce strategy, but this is a great opportunity for ink providers to distinguish their product.

As users we tend to think all things that go wrong is related to something we did. Consequently, we make conclusions that are anecdotal. I been running Cobra Ink expiry Dec 2019. Agitated every other month. Stored in the dark in office environment.
 
Old June 14th, 2020 Jun 14, 2020 9:36:15 PM -   #5 (permalink)
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Default Re: Aged pre treatment and pigment inks

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Originally Posted by LancerFlorida
I hope a ink manufacture will respond with information as it relates to the chemistry of the ink as well as with impact of storage that is not dark and conditioned.
I did, the white ink should be sold in a light safe bottle, but it still needs turning on a regular basis. The CMYK should not be in direct sunlight And not stored above 20c.

Regards

Colin
 






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