c71hc magenta toning

[qwertygro]

I have a problem with the c71hc printer. All prints have a magenta cast. Drum and develop have been replaced. When I perform an automatic gamma adjustment from service, the magenta values are much higher than the other colors. I have already performed profiling and linearization (already here the composite gray stripe has a magenta dominant) without success. What could it be? Thank you

WhatsApp Image 2023-12-27 at 12.03.54.jpg IMG_1147.jpg

[Synthohol]

Re: c71hc magenta toning

i would swap the magenta and cyan DV units. tape the toner holes and leave the toner bottle door open while testing so it wont try to add toner.
see if it follows the DV or the slot.

ive done this on the c6500 and up. it works on all models as a good test.

just to see if the cast goes away i mean.

[qwertygro]

Re: c71hc magenta toning

i would swap the magenta and cyan DV units. tape the toner holes and leave the toner bottle door open while testing so it wont try to add toner.
see if it follows the DV or the slot.

ive done this on the c6500 and up. it works on all models as a good test.

just to see if the cast goes away i mean.

initially the magenta had values around 750/800 and I did the test you suggested. I reversed cyan and magenta. when the developer is inserted into the cyan slot the values are slightly lower but still higher than the others (around 700). since they are high so I completely replaced the magenta developer (case and dust) but it didn't solve the problem because this is currently the situation.
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[Synthohol]

Re: c71hc magenta toning

But did you get the haze all over like befire?

[qwertygro]

Re: c71hc magenta toning

But did you get the haze all over like befire?

it's strange because for example if I have red text or vector graphics it is printed almost orange in all other cases the reproductions of the images are with a slightly red tone for example panoramas with a light blue sky become violet as well as beige tones become redder. if I print a face the skin becomes reddish as if it had gone to sea in the summer.

[qwertygro]

Re: c71hc magenta toning

879a64c0-57ad-48c5-b2cd-9d7de7683620.jpg2d98cd51-246e-443a-9d61-280e04aac1b0.jpg The text in this sample is orange and not red like in the file

[lartis.aineias]

Re: c71hc magenta toning

I have a problem with the c71hc printer. All prints have a magenta cast. Drum and develop have been replaced. When I perform an automatic gamma adjustment from service, the magenta values are much higher than the other colors. I have already performed profiling and linearization (already here the composite gray stripe has a magenta dominant) without success. What could it be? Thank you

[ATTACH=CONFIG]61018[/ATTACH] [ATTACH=CONFIG]61019[/ATTACH]

replace the M developer and your problem will be fixed!(I had this problem with Chinese torers and the only solution was to replace the developer)

[wjurls]

Re: c71hc magenta toning

Since the great toner shortage of 2021 I have seen a big problem with crap magenta toner for the C1060 series.

It's so bad that it was actually ruining the developing units as well as developer.

I'm still seeing it crop up from time to time. Just saw a new customer yesterday that is showing signs of it.

[qwertygro]

Re: c71hc magenta toning

replace the M developer and your problem will be fixed!(I had this problem with Chinese torers and the only solution was to replace the developer)

after having done the test of inverting the magenta and cyan developer (as was also suggested in another message), with the hope that the slightest drop in values was a clue, I replaced the magenta developer. but I didn't get any change.Ps. I only use genuine components and toners.

[qwertygro]

Re: c71hc magenta toning

Since the great toner shortage of 2021 I have seen a big problem with crap magenta toner for the C1060 series.

It's so bad that it was actually ruining the developing units as well as developer.

I'm still seeing it crop up from time to time. Just saw a new customer yesterday that is showing signs of it.

I think that this is also part of the problem... but since there is no difference despite the new drum and developer, this morning I replace the sensors bar, I have to do some tests in the next few days, but at moment the magenta values dropped to around 450/500. I hope this is the problem and I have solved it. I'll keep you up-to-date.

[wjurls]

Re: c71hc magenta toning

I think that this is also part of the problem... but since there is no difference despite the new drum and developer, this morning I replace the sensors bar, I have to do some tests in the next few days, but at moment the magenta values dropped to around 450/500. I hope this is the problem and I have solved it. I'll keep you up-to-date.

If it returns, you will need to change the developer AND developing unit.

[qwertygro]

Re: c71hc magenta toning

If it returns, you will need to change the developer AND developing unit.

the problem has already returned the magenta values again 780/800. Totally changed devoper cartridge with one taken from a working machine... same results, I still can't find the problem....

[tehrancopy.com]

try exchanging M drum unit with another color and check the difference in Gamma automatic adjustment . For reducing magenta from prints you can reduce it in expert adjustment , color balance .

[prakashshetty]

Kindly check the MDIA setting and adjust it accordingly. Print the highlight adjustment chart and check the magenta gradation. if its way out of specs Try resetting the quality adjustment setting to factory reset in service mode. Then perform the Highlight adjustment (printer gamma offset adjustment). Start with the printer gamma sensor adj > printer gamma auto adj > printer gamma manual adj. then carry out auto gamma adjustment. It should solve your magenta overtone issue. have personally faced and resolved this issue.

[lartis.aineias]

I would also change the toner!