[trankhanh_cr]

Hi, everyone. Now, i have a problem. I need change printing ink in printer by conductive electric ink (by i do) (it is nano silver + CNT - carbon nano tube), but i don't know information about viscosity and density of printing ink. So, i need values viscosity and density of printing ink. And size sprinkler in printer.
Printer used inkjet printer, use piezo.
Thanks.

[Borek]

This is probably a proprietary information and I doubt it is freely available. Chances are someone has already checked, but if you are not able to google it most likely the simplest approach is to measure these things by yourself.

[billnotgatez]

I did a GOOGLE on
ink viscosity
and had several hits
This url is just one of the hits that seemed interesting
http://www.viscopedia.com/viscosity-tables/substances/ink/
especially this portion

Reference
Measured with DMA 4500 M Density Meter and Lovis 2000 ME Microviscometer.

[Arkcon]

Also, if you've formulated your own ink, with conducting additives, then you've likely changed its properties, and will again, have to redetermine.

One wonders how uniform your formulation is, and how well it can stay mixed.  Or if the piezo isn't altering the distribution as it sprays.

Even before testing, you may want to try it and see.  WHat actually happens when you put your ink formulation into the cartridge and try to print.

[trankhanh_cr]

Thank you....

[Enthalpy]

The density and viscosity of liquids are easy to measure, and you'll probably need to do it yourself since you formulate the conductive ink.

Machine a funnel (rather a set of funnels with different sizes) with a known capacity and a known exit diameter an length. The flow speed can be computed when the flow is laminar. With a chronometer, measure the speed, deduce the viscosity. Formulas even exist on the Web. I did that, it works; pay attention to have the exit already in the liquid to avoid the effect of surface tension.

To promote the contact between the silver particles, hammering the tracks may help:
http://www.chemicalforums.com/index.php?topic=71947.0