Developer in toner

[wjurls]

Re: Developer in toner

Maybe experiment with it? Take out a measured amount of toner (say 100 grams) and dispense it into a small plastic cup. Then run a magnet through it repeatedly until you no longer get any iron oxide sticking to it. Figure out the percentage of weight of developer to toner.

[tsbservice]

Re: Developer in toner

Bear in mind, that color toners lasts for 26k pages, and black lasts for 29k - that's the main source of weight difference (in theory).

This may be or may not be the case. In example TN324K lasts 28k and weight 547 grams and TN324M/C/Y lasts 26k and weights 513 grams, basically 2000 pages more are due 33 grams more in black cartridge. Both contain developer.
TN216 C/M/Y weights 437 grams and TN216K - 524 grams, after some maths it appears toner in K cartridge should be 487 grams and and rest to 524 is developer - 37 grams developer per 524 cartridge.

[jotunn]

Re: Developer in toner

K toner for C220 weights about 50 grams more than color toners so maybe that's the value I will need.

Bear in mind, that color toners lasts for 26k pages, and black lasts for 29k - that's the main source of weight difference (in theory).

[tsbservice]

Re: Developer in toner

...
MSDS will not help you in any way - the percentages described there are very generous (1-10%).

True...percentages are between 2 - 20% (iron + manganese oxid). That means in grams between 10 - 100 grams.
K toner for C220 weights about 50 grams more than color toners so maybe that's the value I will need.

[Copier Addict]

Re: Developer in toner

Hi folks, anyone knows how much developer is in one standart KM toner which weighs about 500 grams. Machines for example would be 4e, 8 series and latest.
Will check later toner data sheets to find if any calculations can be approximated but any input is appreciated.

It's a long time ago, but I believe in training the instructor told us it was around 10% developer in the toners

[jotunn]

Re: Developer in toner

About 7 grams - based on simple calculations for C220 toners (because only black is mixed with developer), and it should be close enough to real value.
MSDS will not help you in any way - the percentages described there are very generous (1-10%).

[allan]

Re: Developer in toner

You have got me curious. What are you trying to do? The devtank will discard excess developer through the waste port. I would guess about a teaspoon full per bottle.

[tsbservice]

Hi folks, anyone knows how much developer is in one standart KM toner which weighs about 500 grams. Machines for example would be 4e, 8 series and latest.
Will check later toner data sheets to find if any calculations can be approximated but any input is appreciated.