Ferrite particle size

[blackcat4866]

This last week I was in a situation that required collecting dumped developer. It's not one of my favorite activities, but with a good strong magnet, I can get most of it. The problem is that I got more that the developer. I collected some toner rocks, which came back the next day as void lines at the doctor blade.

My question is, what is the current particle size of the toner and ferrite we're using on current models? I'd like to filter out the oversized particles. I just need a target value. The most recent machine that I have documentation on is the Kyocera Saturn, with toner particles around 5μm. Does anybody have data on MFP's of the last 8 years?

=^..^=

[NeoMatrix]

This last week I was in a situation that required collecting dumped developer. It's not one of my favorite activities, but with a good strong magnet, I can get most of it. The problem is that I got more that the developer. I collected some toner rocks, which came back the next day as void lines at the doctor blade.

My question is, what is the current particle size of the toner and ferrite we're using on current models? I'd like to filter out the oversized particles. I just need a target value. The most recent machine that I have documentation on is the Kyocera Saturn, with toner particles around 5μm. Does anybody have data on MFP's of the last 8 years?

=^..^=

What are you up to BC...? Are you pressing sulphur, polymer binder and ferrite powder into a mould and making fridge magnets or RF chokes?
The magnetizer power unit would be the most interesting part of project though...

Used FE powder can be recycled\re-used into many interesting projects.

Sorry I don't have any micron data for FE powders. I'll let you know if I find any info...

[Larhal]

Hey Blackcat,

Most of the ferrites used today are in the 30- 60 micron range.

We purchased a lab sieve with a 100 micron opening and use that to screen the lumps out of the carrier. Works a charm.

Larhal

[Larhal]

One other thing BC,

The toner particle size is 7 microns +/-.

Larhal

[NeoMatrix]

Hang five will I drag my Verniers/Micrometer out of the box.
I should have some very very old Toshiba BD 58, BD 88 ferrite developer laying around, I'll see if I can find it.

.... Ok I'm back....

I measured both developer particle size at 0.016-0.018 mm = ~18 um.


I have some old Xerox developer laying around somewhere , would you like me to measure that for use as an overall average ?

HTH

[blackcat4866]

Hey Blackcat,

Most of the ferrites used today are in the 30- 60 micron range.

We purchased a lab sieve with a 100 micron opening and use that to screen the lumps out of the carrier. Works a charm.

Larhal

This is exactly what I was thinking of. Can you share the source of the lab sieve? Thanks in advance.

One other thing BC,

The toner particle size is 7 microns +/-.

Larhal

That's about what I would expect.

Hang five will I drag my Verniers/Micrometer out of the box.
I should have some very very old Toshiba BD 58, BD 88 ferrite developer laying around, I'll see if I can find it.

.... Ok I'm back....

I measured both developer particle size at 0.016-0.018 mm = ~18 um.


I have some old Xerox developer laying around somewhere , would you like me to measure that for use as an overall average ?

HTH

That's the problem. The last data I had goes back to the old BD days. Thanks for taking the time. =^..^=

[NeoMatrix]

This is exactly what I was thinking of. Can you share the source of the lab sieve? Thanks in advance.



That's about what I would expect.



That's the problem. The last data I had goes back to the old BD days. Thanks for taking the time. =^..^=

You might be able to use a Petroleum funnel with a micro-gauss water filter in situ.
You can purchase in-the-tank micro-guass filters for small petrol motors. They are a cylindrical funnel that sits in place at the fuel cap opening, and filters water and rubbish from the fuel source.

It should remove the toner out of the developer at the very least.

[blackcat4866]

Maybe something like this?:

Cole Parmer 3 Diameter Sieve Full Height Stainless Steel No 200 75 from Cole-Parmer

59987_19 No200 Sieve.jpg
=^..^=

[NeoMatrix]

Maybe something like this?:

Cole Parmer 3 Diameter Sieve Full Height Stainless Steel No 200 75 from Cole-Parmer

59987_19 No200 Sieve.jpg
=^..^=

Yeah, I was think more about the plastic ones in general.
The metal item shown in the image should do the job...
Nice price$ though....

[NeoMatrix]

I just had a light bulb moment.....

What about a hobby screen printing frame ?
You can purchase screen printing frames from any arts and crafts store.
They are a A4 or bigger wooden frame with a polymer micro-screen stretched over the frame .

You could ask IowaTech if he has an old RisoGraph drum laying around. You might be able to use the metal micro-screen in one of those ?