Kyocera 3551ci cyan bands

[BillyCarpenter]

I stopped by a customer's office to drop off toner on Friday. They were about to close but I did a quick check of the machine and noticed cyan bands. The bands get progressively lighter from the top of the page to the bottom until they fade away. I measured the repetitive bands : 1 9/16. It's kind of difficult to get a precise measurement because part of the bands fade from the first to second band and the circumference of the PCR is 1 1/2 and that's only 1/16in. difference from the mag roller.

Thoughts? See image below.


Edit: The page count on the cyan DV & PCR is 94k.


doc00000820210130194242.pdf

[JR2ALTA]

Re: Kyocera 3551ci cyan bands

Given the curve and distance I would guess the mag roller and to replace the dev unit.

[blackcat4866]

Re: Kyocera 3551ci cyan bands

Given the curve and distance I would guess the mag roller and to replace the dev unit.

+1

Did you notice the spots from the cyan primary charge roller?
=^..^=

[BillyCarpenter]

Re: Kyocera 3551ci cyan bands

I'd feel much better if you guys told me it was the PCR. Can you lie to me?


Thanks for the advice guys.

[blackcat4866]

Re: Kyocera 3551ci cyan bands

I'd feel much better if you guys told me it was the PCR. Can you lie to me?


Thanks for the advice guys.

That wouldn't account for the curve to the line. Sorry. =^..^=

[JR2ALTA]

Re: Kyocera 3551ci cyan bands

I'd feel much better if you guys told me it was the PCR. Can you lie to me?


Thanks for the advice guys.

doubt it. you could have swapped them to be sure, tho.

[Phil B.]

Re: Kyocera 3551ci cyan bands

I'd feel much better if you guys told me it was the PCR. Can you lie to me?


Thanks for the advice guys.

do you want the truth and a way to fix it?

or do you wants lies and a warm fuzzy feeling?

mag roller my dude

[BillyCarpenter]

Re: Kyocera 3551ci cyan bands

+1

Did you notice the spots from the cyan primary charge roller?
=^..^=

First off, I believe both of you that it's the mag roller. But would you like educate me on you line of thinking? I'd appreciate it.


Both the mag. roller and the pcr are round rollers. How can you determine that it's the mag. roller and not the PCR from looking at the curve of the cyan band? I need to know these things.


Edit: I didn't notice the spots from the PCR until you just pointed it out.

[BillyCarpenter]

Re: Kyocera 3551ci cyan bands

do you want the truth and a way to fix it?

or do you wants lies and a warm fuzzy feeling?

mag roller my dude

LOL

I was joking.

[Phil B.]

Re: Kyocera 3551ci cyan bands

First off, I believe both of you that it's the mag roller. But would you like educate me on you line of thinking? I'd appreciate it.


Both the mag. roller and the pcr are round rollers. How can you determine that it's the mag. roller and not the PCR from looking at the curve of the cyan band? I need to know these things.

because of the TYPE of defect

are you measuring from beginning of band *darker lead edge* to the same

or darker to fade?

[BillyCarpenter]

Re: Kyocera 3551ci cyan bands

because of the TYPE of defect

are you measuring from beginning of band *darker lead edge* to the same

or darker to fade?

Phil,

I measuring from the beginning of the band - darker lead edge. Yes, from darker lead edge from the 1st band to the same point on the 2nd band.

[JR2ALTA]

Re: Kyocera 3551ci cyan bands

First off, I believe both of you that it's the mag roller. But would you like educate me on you line of thinking? I'd appreciate it.


Both the mag. roller and the pcr are round rollers. How can you determine that it's the mag. roller and not the PCR from looking at the curve of the cyan band? I need to know these things.


Edit: I didn't notice the spots from the PCR until you just pointed it out.

Repeating drum defects (not talking about blade streaks) tend to be cleaner and sharper. The curved smudgey blobs appear to be developer built up in a cruder manner.

[BillyCarpenter]

Re: Kyocera 3551ci cyan bands

Repeating drum defects (not talking about blade streaks) tend to be cleaner and sharper. The curved smudgey blobs appear to be developer built up in a cruder manner.

That makes sense. Thank you.

[blackcat4866]

Re: Kyocera 3551ci cyan bands

I've seen the curved bands crossfeed on Toshiba 2550C when the developer bearings are seizing. I think you'll find that the cyan developing unit is difficult to turn. The developing cylinder counter-rotates against the drum, so the interval does not directly reflect the diameter of the developing cylinder.

I would not recommend taking apart the Kyocera developing unit. I always end up with a pile of pieces that cannot be re-assembled. =^..^=

[BillyCarpenter]

Re: Kyocera 3551ci cyan bands

I've seen the curved bands crossfeed on Toshiba 2550C when the developer bearings are seizing. I think you'll find that the cyan developing unit is difficult to turn. The developing cylinder counter-rotates against the drum, so the interval does not directly reflect the diameter of the developing cylinder.

I would not recommend taking apart the Kyocera developing unit. I always end up with a pile of pieces that cannot be re-assembled. =^..^=

Very interesting. I learn something new on here every day. I've seen bands similar to these when the DV spacers get worn. But I can't say that I've seen the curved aspect or I just didn't notice. I'll be sure to check if the DV bearings are seizing.