bizhub 223 deveroper unit question

[cbalin]

Re: bizhub 223 deveroper unit question

There are specific steps in all this. You just can't stick these parts in the machine and it work. What did you order exactly, the developer unit?. I hope you also have a package of developer. And usually you replace drum same time as developer. You have to clear the life counters, install the unit then you have to run TCR adjustment in service mode.

Sent from my Galaxy Nexus using Tapatalk 2

Thanks for quick reply. I ordered dv411 and the drum unit with the blade, I can see where the drum unit goes but couldnt locate where I need to put/refill the developer unit. I searched online but couldnt find anything but you guys seem helpful.
Thanks again.
If there are steps somewhere you can direct me to, ill look into that too.
Thanks again

[wseyller]

OK so you are going to change drum and developer. The developing unit itself last much longer. So you first need to reset the life counters in service mode for the drum rotation time, developer use time, and the paper dust collector assuming your drum comes with one. Turn off copier and open right door. You may have to remove a small cover (one screw) on the right side of the image unit to access the connector. Unplug connector and pull out entire image unit. Remove two silver screws from each side and separate the drum unit from the developing unit. On the developing unit there are three non magnetic screws in top to remove the lid. Dump out all the developer. Get as much out as possible. I rotate the roller forward to help convey it into the reservoir and keep dumping it out. Fill with new developer and put it all back together. Turn on copier. Asap go to service mode - image adjustment - trc adjust. Select black and press start. Wait couple minutes for it to finish and exit service mode. Personally I suggest you have someone experienced do it but otherwise good luck.

Sent from my Galaxy Nexus using Tapatalk 2

[Hansoon]

Re: bizhub 223 deveroper unit question

If you are not a tech you most likely will need one. This kind of work usually cannot be done by endusers.

Hans

[brent]

Re: bizhub 223 deveroper unit question

Quick question. I ran into a situation that I need a drum unit and I won't have any for a few days. Feasibly could I reuse a drum unit and just replace starter. And do the functions that I normally would? It will it cost me? How about resetting the drum and developer counters will that throw a atdc code? I know there is firmware for this. Thanks
brent

[Copier Addict]

Re: bizhub 223 deveroper unit question

Quick question. I ran into a situation that I need a drum unit and I won't have any for a few days. Feasibly could I reuse a drum unit and just replace starter. And do the functions that I normally would? It will it cost me? How about resetting the drum and developer counters will that throw a atdc code? I know there is firmware for this. Thanks
brent

If it isn't producing lines, just let it run until you get the new drum. It won't shut down on you.
Yes there is firmware to shut off the messages and and it will run until drum and dev are truely cooked. If you are authorized KonMin tech you can find it on MyKonicaMinolta.com.

[JR2ALTA]

Re: bizhub 223 deveroper unit question

The basic science is dual-component machines (separate toner-developer) should have the drums and dev. replaced at the same time.

This is because the machine lays a "patch" of black on the drum and scans it's density. During this, it takes into account the counter of each unit.

So, new dev on and old drum or vice versa can cause codes because the machine considers it too weak to continue.

Real machines , like Kyocera, use pre-mixed toner. No science, no codes.

[Copier Addict]

Re: bizhub 223 deveroper unit question

The basic science is dual-component machines (separate toner-developer) should have the drums and dev. replaced at the same time.

This is because the machine lays a "patch" of black on the drum and scans it's density. During this, it takes into account the counter of each unit.

So, new dev on and old drum or vice versa can cause codes because the machine considers it too weak to continue.

Real machines , like Kyocera, use pre-mixed toner. No science, no codes.

BH223 doesn't use a patch. It uses an ATDC sensor to determine toner ratio

[Hansoon]

Re: bizhub 223 deveroper unit question

Real machines , like Kyocera, use pre-mixed toner. No science, no codes.

Hans

[savi0r]

Re: bizhub 223 deveroper unit question

Hi guys. I didn't want to open a new thread, since my question is related to the developer section of a bizhub 250. Quick story : customer calls and says that the copier is leaving stripes on paper. Got there, noticed that the black stripes on paper is really developer material. I proceded to the developer unit ( which btw i changed the developer material and roller spacers a short while ago) and noticed that the side seals got torn somehow. The drum was exfoliated by about 1,2 mm in the left area. I managed to produce the side seals from some duck tape and the problem was gone. My question is : what exactly is the role of those side seals? If the drum is exfoliated at one end and the side seals are missing, can those stripes that i was talking about be the result?

[blackcat4866]

Re: bizhub 223 deveroper unit question

This is called hi-jacking someone else's thread, but I'll answer.

The developing seals perform two purposes:
Firstly, the seals act as insulators to prevent arcing, which is most likely why that fixed your problem.
Secondly, the seals prevent toner and developer from contaminating the developer spacers.

Since the seals make physical contact with the drum they must be soft enough that they don't damage the drum coating. If they wear through the drum coating, even outside the imaging area, you can get drum grounding bars on your prints. =^..^=

[CraigW]

Re: bizhub 223 deveroper unit question

Anyone seen the white factory DS rollers crack ???

BH223, 3rd PM @ 243K Life gauge shows around 25% still left on developing unit.

Noticed the drum was to metal at the rear side at 80k.

Gave dev unit a good inspection and found both front and rear had cracked. (replaced the developing unit to be safe)

[allan]

Re: bizhub 223 deveroper unit question

Jip almost all of them. I just leave them like that. Tired of changing the collar kits.
Does not seem to affect things to much.

Now i just cut the spring on the transfer roller 2 turns shorter and break and file the white plastic guide that runs against the drum on the rear side flush with the metal guide.
Don't do it if they run thick stock.
Now no more scratched drums or worn dev seals.

Do this at your own risk.

[Hansoon]

Re: bizhub 223 deveroper unit question

Does not seem to affect things to much.

It causes jitter in the prints Allan and there is much more strain on the gears.

Since years we are manufacturing those collars way before KonicaMinolta s̶t̶o̶l̶e̶ copied the idea from us. (See my avatar). Our collars will not crack and have life time guarantee. Send me one of our collars with a crack and you get 10 pcs for free in return.

touchpanel[at]rex-technika.com



Hans

[allan]

Re: bizhub 223 deveroper unit question

I have noticed some jitter.

May be we should get some of those collars from you guys.
No one here supplies anything to fix that problem here.

I could try some engineering plastics and make some.

They break when the machine are really young and none of the customers complained about the pitch lines yet.
Well it pisses me of when i look at test prints. But the machines and drive trains make it well past there engine life.
The way we are going thru these machines and replacing them with the new B227 generation we would not have too many of them to worry about soon.


That could also be the reason some of the drum gears break??
For that i remove the shear points on the gear by chamfering the edge and they don't break after that.

I will tell an importer here of your product if he is interested i will ask him to send you a visitors message if that is ok with you.

Does that collars have race bearings in them?

[Hansoon]

Re: bizhub 223 deveroper unit question

Those are selected bearings with a special clearance. Also the type of plastic and especially the way of manufacturing is critical.

We sell worldwide also in smaller quantities.

Hans