Hi Myron,
> 1) Am I correct that these percentages can be applied to volume rather than weight?
The ratios are based on weight.
However, the only time this makes a significant difference is when then generic base is mixed. In that mix, the glycerol is too heavy, with a specific gravity of about 1.25. So, after converting all to volumes, if for example the glycerol would be 10 ml, you'd want to divide 10 by 1.25. This gets you 8. So the glycerol measure would be 8 instead of 10.
> With various syringes it is easier to be precise with volume.
If you are mixing to 100 ml of total volume or more, syringes are good enough.
>; 2) Is there any disadvantage to mixing significantly more toner (or any of the black dilutions) than needed to fill my cartridges? (220ml 3880)
Probably not. Just as a matter of convenience, I find the 220 carts large enough that I mix to that amount and do not bother with storage.
> Are the mixtures/dilutions more likely to “go bad” in some way than the undiluted inks? Assume that I would agitate the stock (mixed) inks every week or so.
Probably not.
I suspect aside from the need to agitate, things that affect the rate of oxidation (mostly of the dispersant coating) are the issues. So, a large bottle with a small volume in it would probably have a shorter shelf life. However, the current dispersion technology is good enough that I have not found it to be a significant issue.
Good luck with the system.
Paul
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On Tue, Sep 13, 2016 at 9:26 AM, Myron Gochnauer
goch@... [DigitalBlackandWhiteThePrint]
<DigitalBlackandWhiteThePrint@yahoogroups.com> wrote:
Paul’s latest ink mixtures use a blue+cyan toner to cool the pure-carbon blacks. The blacks are various dilutions of carbon-black (MK or PK).
My questions prior to getting my hands dirty:
1) Am I correct that these percentages can be applied to volume rather than weight? With various syringes it is easier to be precise with volume.
2) Is there any disadvantage to mixing significantly more toner (or any of the black dilutions) than needed to fill my cartridges? (220ml 3880) Are the mixtures/dilutions more likely to “go bad” in some way than the undiluted inks? Assume that I would agitate the stock (mixed) inks every week or so.
Thanks for the help.
Myron (Gochnauer)
PS: Do any of you have a strong opinion on whether it would be better to use one or the other of the Epson 4880 or 3880 for a b&w-only printer? The other would be preserved for colour. Assume that I use only cut paper (3880 does not handle roll paper as does the 4880).
Roll paper aside, the 3880 seems less prone to clogging, but it more difficult to flush and clean the lines and heads with cleaning solution (in cartridges). I cannot see any difference in output quality.