Canon iR Advance C5035i Print Fading Problem

[malwatson]

I'm hoping someone can help me with this. I have attached two print outs of 100% Yellow and 100% Magenta.
Please note the attached print outs colours are weaker than they actually are on screen, in otherwards
in the attached files the centre of the yellow print out looks orange while in real life the print out that was
scanned is just a darker shade of yellow.

The YELLOW is running very rich horizontally through the centre, while the MAGENTA is faded towards the lower
horizontal end. The CYAN and BLACK print outs are perfect.

Parts which were replaced and can be ruled out:
i) Registration Patch Sensor
ii) ITB Belt
iii) Toner Drums
iv) 2 New Laser Drums

I have tried running:
1) Colour mismatch
2) Auto Adjust Gradation
3) INIT ITB (Service Mode Level 1)
4) Laser Skew Adjustments
5) Machine is completely level and within the ITB POS tolerance range

Thank you all in advance

magenta_output.jpgyellow_output.jpg

[teckat]

Re: Canon iR Advance C5035i Print Fading Problem

[OEM DRUMS - & TONER & PARTS

What is machine enviorment ?
Did u change paper ?
Paper Type using ?
Did u check image before transfer ?
And after transfer ?
Did u stop to check image on Drum before ITB ?

[malwatson]

Re: Canon iR Advance C5035i Print Fading Problem

[OEM DRUMS - & TONER & PARTS

1) What is machine enviorment ?
2) Did u change paper ?
3) Paper Type using ?
4) Did u check image before transfer ?
5) And after transfer ?
6) Did u stop to check image on Drum before ITB ?

1) The machine's environment is perfect, humidity, temperature etc.
2) No
3) Happens on thin and heavy paper and all weights
4) No.
5) No.
6) No. But as I said the ITB and the 4 Drums are new, so these suggestions are not really valid.

[teckat]

Re: Canon iR Advance C5035i Print Fading Problem

1) The machine's environment is perfect, humidity, temperature etc.

2) No
3) Happens on thin and heavy paper and all weights
4) No.
5) No.
6) No. But as I said the ITB and the 4 Drums are new, so these suggestions are not really valid.

================================================== ======================
there is no perfect environment ( unless u/customer had a special print room built that monitors conditions with expensive equipment)

They are all VALID / especially about ORIGINAL CANON PRODUCTS =OEM

New means nothing in the world of printers> especially with Canon/

Inspection during the copy process is a procedure needed to troubleshoot a problem?
it's called isolation & possible discovery of the problem at hand /

If u expect a Miracle solution here> without some effort on your part> u are in wrong forum
================================================== =========

TIP:
The secondary transfer roller holders causes many fade issues in this series.

[malwatson]

Re: Canon iR Advance C5035i Print Fading Problem

================================================== ======================
there is no perfect environment ( unless u/customer had a special print room built that monitors conditions with expensive equipment)

They are all VALID / especially about ORIGINAL CANON PRODUCTS =OEM

New means nothing in the world of printers> especially with Canon/

Inspection during the copy process is a procedure needed to troubleshoot a problem?
it's called isolation & possible discovery of the problem at hand /

If u expect a Miracle solution here> without some effort on your part> u are in wrong forum
================================================== =========

TIP:
The secondary transfer roller holders causes many fade issues in this series.

The environment is carefully controlled and has not changed (temperature, humidity, power voltages etc) from when the problem started and at the beginning when it wasn't a problem. Please be fair and respectful, I didn't disrespect you but you have disrespected me in saying "If you expect a miracle etc".
I don't and that's unfair of you.

I am simply keeping to the facts and have already tried many options and looking for fresh ideas, I have already spent hours trying to isolate the problem, I haven't just uploaded my problem and sitting back now. I appreciate forums like this and I don't intend on wasting any persons time here.

I have checked all rollers, ITB assembly, bearing, transfer arms, bushings etc, they all check out fine. Everything is sitting correctly, this problem gradually occurred hence the difficulty narrowing the cause down.

Please note: Cyan and Black print perfectly.

Hopefully someone has experienced a similar problem and can help.

[teckat]

Re: Canon iR Advance C5035i Print Fading Problem

Parts u replaced have nothing to do with your issue.

That is why I talk about procedure to isolate the situation.
U have not answered ? if issue is before transfer or after transfer.

I respect all posted issues, from techs ,& key operators.
I have been a tech, teacher,& troubleshoter on Color Canon products for over 25 yrs.

Transfer inspection question isolates issue.

Peace

[Canuck]

Re: Canon iR Advance C5035i Print Fading Problem

What is common to yellow and magenta? Laser. Remove laser assembly, remove cover and clean the polygon mirror assembly. The edges get dirty and cause light area on edge

[THUK]

Re: Canon iR Advance C5035i Print Fading Problem

Hi i would do a PG 10 and PG 16 Test pages and if you can see it on them then it should be the Lasers.

I'm hoping someone can help me with this. I have attached two print outs of 100% Yellow and 100% Magenta.
Please note the attached print outs colours are weaker than they actually are on screen, in otherwards
in the attached files the centre of the yellow print out looks orange while in real life the print out that was
scanned is just a darker shade of yellow.

The YELLOW is running very rich horizontally through the centre, while the MAGENTA is faded towards the lower
horizontal end. The CYAN and BLACK print outs are perfect.

Parts which were replaced and can be ruled out:
i) Registration Patch Sensor
ii) ITB Belt
iii) Toner Drums
iv) 2 New Laser Drums

I have tried running:
1) Colour mismatch
2) Auto Adjust Gradation
3) INIT ITB (Service Mode Level 1)
4) Laser Skew Adjustments
5) Machine is completely level and within the ITB POS tolerance range

Thank you all in advance

[ATTACH=CONFIG]25727[/ATTACH][ATTACH=CONFIG]25728[/ATTACH]

[freebyrd116]

Re: Canon iR Advance C5035i Print Fading Problem

Canuck is right on this one. Yellow/Magenta laser assy should be removed and disassembled and the polygon mirror should be inspected for dust buildup. Very common issue on these machines. See attached picture. The arrows indicate the dirty areas on the polygon mirror assy. Make sure to clean the surface of EACH of the 6 facets. Keep in mind that this can also occur in the Black/Cyan Assy.

polygon mirror.jpg

[malwatson]

Re: Canon iR Advance C5035i Print Fading Problem

Thank you all I will check the polygon mirrors and post back results.

[dan7777]

Re: Canon iR Advance C5035i Print Fading Problem

We have had to replace the laser units. I also got a reconditioned laser unit that did not work and finally my boss ordered a new one. On some colors the color faded in areas, not the same color across the page. I was able to get over a million copies at a print shop until they upgraded. It went through two sets of lasers. They are not hard to replace, just make sure they are seated correctly and be careful with the connectors. Remove the drum drawer and transfer belt assembly to get to them. You can clean the mirrors and polygon mirror in the laser but that does not always fix it. In some cases it does but not all.

[onlyinnewfoundland]

Re: Canon iR Advance C5035i Print Fading Problem

Haven't had too many of these problems, but like everyone has said...definitely laser related if it's only occuring in magenta and yellow. By the way these lasers are interchangable (I mean from left to right)..or at least I have had to troubleshoot by swapping. They will work if you just want to see if it's a laser issue.

I have to take these suckers apart on a semi-regular basis for a customer of ours who smokes in the same room as the machine. Oh joy, oh bliss.

Hope you got it working.

[Canuck]

Re: Canon iR Advance C5035i Print Fading Problem

Read this..N08-041-2-soiled mirror.pdf

[malwatson]

Re: Canon iR Advance C5035i Print Fading Problem

I cleaned the polygon mirror and it did improve slightly, however it didn't go entirely.
I have to-date only changed one laser and after swapping lasers the problems goes,
so the yellow and magenta laser was the problem.

Thank you all for your contributions I really appreciate your help.

[roho]

Re: Canon iR Advance C5035i Print Fading Problem

If I'm not mistaken, the other thing common to both yellow and magenta is the bias plate found on the base of the magenta hopper. That might be worth checking out for dust, dirt, or poor contact.