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  1. #11
    Service Manager 2,500+ Posts
    What happens to the developer?


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    Re: What happens to the developer?

    Yanni is right. Developer is not "consumed", it just "carries" the toner. The consumable life % doesn't mean the developer was removed from dev unit it just means that's how much it's carried the toner in it.

  2. #12
    Service Manager 2,500+ Posts
    What happens to the developer?

    Synthohol's Avatar
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    Re: What happens to the developer?

    you are seeing the % of life left on the DV units themselves.
    We know a thing or two because we've seen a thing or two.

  3. #13
    Master Of The Obvious 10,000+ Posts
    What happens to the developer?

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    Re: What happens to the developer?

    Quote Originally Posted by yianni View Post
    Just for my curiosity, for which modes are you interested for? I suppose for desktop KM machines, I'm correct?

    > I have 2 copiers that came with 60%, 70% developer. Can I pour the 60% developer from the first copier in
    > the developing unit of the second copier?

    70% means that the developer unit worked 30% of its life. It may contains 100% of the developer powder.
    Exactly how will you determine the toner density, and or the proper quantity of developer? =^..^=
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

  4. #14
    Senior Tech 250+ Posts
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    Re: What happens to the developer?

    Quote Originally Posted by copyman View Post
    Great explanation BC of the science with developers, toners. I think the original poster was talking about a bag of aftermarket developer which is being sold now. I tried the kon/min "4" series aftermarket developer but didn't work well.
    I am using C8000 developers in low speed machines, cheap but ORIGINAL option, & works very much fine.

  5. #15
    Trusted Tech 50+ Posts
    What happens to the developer?

    Boltaction's Avatar
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    Re: What happens to the developer?

    Quote Originally Posted by copyman View Post
    I would not reuse the developer. I sell a lot of Kon/Min off lease machines. I sell with full toners but if other consumables are over 50% (usually are over 50% because I only buy low meter machines) I sell the machines without replacing any of the consumables. Before selling I make sure to turn off the warnings for the consumables. They can run way past their life with no quality drop off. By the time you replace all the consumables your profit is gone!
    In my experience, as I have a lot of these machines in the field, running drums past life is fine but if they go too far they will begin to deplete developer prematurely. We used to set the machines up in the shop with all consumable reminders off until we started to notice c-255x codes relating to undertonned/overtonned developer units, to which the only cure is replacing an $800 developer unit (sometimes multiple). Because the genuine Konica Minolta drum units run for so long before showing lines/streaking, the risk of the drums zapping developer units increase. We have since turned the drum reminder on at the expense of maintenance customers calling for us to replace the drum units.

  6. #16
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    Re: What happens to the developer?

    I hope you've solved your problem! I also sell printers. I have been in this business for several years and a colleague of mine advised me to start selling second hand printers. I have always sold only new printers but now during the crisis, my sales have declined and it seems to me that new customers are not ready to spend a lot of money on new printers now. In addition, I want to develop my own website and maybe even an app so that every new customer can find my products and services online. I would like to know the software engineer hourly rate? Perhaps you can help me with your advice? Thank you in advance!

  7. #17
    Service Manager 2,500+ Posts
    What happens to the developer?

    BillyCarpenter's Avatar
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    Re: What happens to the developer?

    This thread was an interesting read...even if it was from 2018.

  8. #18
    RTFM!! 2,500+ Posts allan's Avatar
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    Re: What happens to the developer?

    Yea and i am the guilty one reusing the developer....
    Whatever

  9. #19
    RTFM!! 2,500+ Posts allan's Avatar
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    Re: What happens to the developer?

    Can't help it i have to spill.

    Developer does get #u&ed in more than one way. The sharp corners for the grains gets warn down and your nice and puffy mag brush is not the same anymore and these rounded grains have a way of breaking free from the magnetic field. Toner gets impacted onto the grains also making it less attracted to the magnetic field, it gets heavier and the extra weight is not magnetic. With the impacted toner machines using toner to carrier ratio sensors will count the toner stuck to the developer as part of the toner concentration and will read a higher TCR value leading to less toner supplied and resulting in light prints. Eventually a lot of the developer would have escaped from the tank and some machines have a minimum value of toner it will add counted by hopper rotations. If there is still enough developer in the tank to cover the mag roller the set amount of toner added will be too much overshooting the TCR target leading to over-toning. Then there is paper dust, its got a way of getting into the dev tank and then just accumulates in there. The paper dust is added to the toner side of the ratio and leads to the machine not adding enough toner.

    You can setup a bench tool to read TCR value of a dev toner mix if you really want to.
    Its amazing to see that most of the developer used by the OEM's are the same stuff regardless if its color or not.
    Whatever

  10. #20
    Service Manager 10,000+ Posts
    What happens to the developer?

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    Re: What happens to the developer?

    Quote Originally Posted by ford2019 View Post
    I hope you've solved your problem! I also sell printers. I have been in this business for several years and a colleague of mine advised me to start selling second hand printers. I have always sold only new printers but now during the crisis, my sales have declined and it seems to me that new customers are not ready to spend a lot of money on new printers now. In addition, I want to develop my own website and maybe even an app so that every new customer can find my products and services online. I would like to know the software engineer hourly rate? Perhaps you can help me with your advice? Thank you in advance!
    your comment does not pertain to this thread... please post it here ---> https://www.copytechnet.com/forums/business-talk/

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