White lines @ magenda 3551ci

[BillyCarpenter]

On fill areas >65% you'll see bubbly voids, either to the front or to the back of the page. It's rare to have both developer spacers fail at the same time. Early on, Kyocera came out with a bulletin that future developing units would have the heavier duty developer spacers found on the KM-6551ci (though you could not purchase them separately).

This is one of my major complains with Kyocera's color sample page: only very small areas of the sample page have anything but 30% fill. I very nicely hides the developer spacer failure.

Attachment 48455

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Man, those void areas that you circled were bugging the hell out of me. I knew it was the DV unit but I couldn't put my finger on the exact cause. That would have bugged me forever it you wouldn't have told me what it was. That DV unit was out of an old 3550ci so I'm sure they had the old style spacers that you're talking about.

PS - I've started using the test charts that you sent me. Thanks for that, also.

[tonerleak]

That's why I always run U89 using 11x17 paper, that way you get a complete picture of what's going on. This has been an ongoing issue with these models, we've replaced countless dev units, was ok when they were under warranty, not so much after. The new models seem to have the issue resolved.

[BillyCarpenter]

The more experience I get on the Kyocera 1-series, the more I'm getting familiar with their weaknesses. I mean, all copiers have weak areas and I really don't have anything to compare them to in terms of other manufacturers. Not hands on experience, anyway.


Today I encountered another failing DV unit. This time it was the black one. The black coating had worn off the mag. roller at 256k. That's about half of the rated yield. The most pages I've ever gotten from one of the DV units is a little over 400k.


For the most part, I find the machines to be reliable. But the DV units are one of the weak area if you're expecting to get the rated yield. Disappointing.

[blackcat4866]

I'm not sure how Kyocera calculates their consumable yields, but they are optimistic at best.

Here's another little thing to watch for on this series: If you reach for the primary charge unit, and you notice rust dust on the handle, most likely the drum ground contact/drum shaft needs conductive grease. I can produce some intermittent strange quality issues.
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