iRC 4080i autogradation

**teckat** · 12-15-2013, 07:42 PM

Re: iRC 4080i autogradation

Originally posted by vlad_robas

Hello,

I have this machine in wich we are currently using Katun toner's on the 3 color's and oem for bk. I have replaced bk drum unit and the other 3 color's are at ~200% used.
Today i had to print few hundred pages and I had this briliant ideea to use full autogradation for heavy paper (wich I'll be using) and now my colors are very light. I'm looking in SM for autogradation term buc I can't figure how can I revert the setting's or full the machine to go back. I don't work on this model of Canon, I'm only used with Sharp, where i have trained.
I have cleaned atdc sensor's an dev station's but no succes there. Pascal setting's aren't hellping either.
Waiting for advised advice.
Thank you.

-----------------------------------------------------------------------------------------
Tech Tip
when u use Heavy Paper > "Do Not Select Heavy on Control Panel"
i always tell customer to never select Heavy----------------on this model------------

do u have a H1 Fiery connected ?? is so did u calibrate it ? using Kodak Gray Scale ?
-----------------------------------------------------------------------------------------------------------------------------------
First thing is to REGISTER ALL PAPER FEED AREAS AS "PLAIN PAPER" THEN RUN AUTO CALIBRATION from Cassettes & the Bypass--

Are Copies and Prints both washed out, when selecting the Heavy Stock mode setting

Does the problem occur from all cassette ports and the bypass unit.
Have u tested in Plain Paper Mode and is it worked fine, when Copying and Printing to Heavy Media.

If so>check the image on the ITB Belt Assembly when selecting HEAVY> IF WASHED OUT> u may need to replace ITB Drive Motor

see pdf---

--

Attached Files

Color Calibration.pdf (243.9 KB, 35 views)

**vlad_robas** · 12-16-2013, 03:40 PM

Re: iRC 4080i autogradation

Hi,
I don't have fiery on machine.
I did the first calibration on heavy paper feed from bypass.
I don't think it is a fizical problem since it was working just fine before this process.
I have tryied to autocalbration on normal paper, glossy, heavy... color's aren't the same anymore... black isn't so black and the other color's are the same ...

Paper used for this job are Colotech+ glosy 160gsm. But it doesen't really mather since the colors aren't the same anymore. I'm guesing that maybe one of the sensor's used in the autogradation proces is dirty so in the result I get this.

**teckat** · 12-16-2013, 05:40 PM

Re: iRC 4080i autogradation

Originally posted by vlad_robas

Hi,
I don't have fiery on machine.
I did the first calibration on heavy paper feed from bypass.
I don't think it is a fizical problem since it was working just fine before this process.
I have tryied to autocalbration on normal paper, glossy, heavy... color's aren't the same anymore... black isn't so black and the other color's are the same ...

Paper used for this job are Colotech+ glosy 160gsm. But it doesen't really mather since the colors aren't the same anymore. I'm guesing that maybe one of the sensor's used in the autogradation proces is dirty so in the result I get this.

----------------------------------------------------------------
Forget about calibration for now---
are all Glass Copies washed out as well as Test Prints/Network Prints ??

or is issue on Glass copies only ? (all starts with the Reader>original exposure> )
if Calibration measurement pages are good >then placed on glass>CCD>Analog AD Conversion>Reader pcb>Digital Process

image data (RGB data) collected by the CCD is processed by the main controller PCB (sub SJ-A, sub R-A, sub PDRM-PE-A).
Main Controller Circuit Board (SUB PDRM-EFA)[gradation conversion]

1-how does the PG10 Test print look ? post it here

2-did u check the images on ITB before Secondary transfer roller ?

3-on the Calibration sheet< are the colors washed out ?

**vlad_robas** · 12-16-2013, 06:15 PM

Re: iRC 4080i autogradation

I'm mainly intrested in printing quality, I did a few copies and they are the same (or almost) as print.

1. I don't know how to execute PG10 test, please explain.
2. I didn't check that yet
3.
first 2 pages are realative ok

**Gamut** · 12-16-2013, 06:22 PM

Re: iRC 4080i autogradation

"I'm mainly intrested in printing quality, I did a few copies and they are the same (or almost) as print"

If you want long term quality don't use Katun toner it kills the drums prematurely.

**vlad_robas** · 12-16-2013, 06:50 PM

Re: iRC 4080i autogradation

Originally posted by Gamut

"I'm mainly intrested in printing quality, I did a few copies and they are the same (or almost) as print"

If you want long term quality don't use Katun toner it kills the drums prematurely.

When I did put the katun toner's drum's life where over 180% but that is not the major problem, problem is that afther I did the gradation color's wheren't that good anymore.

**teckat** · 12-16-2013, 10:12 PM

Re: iRC 4080i autogradation

Originally posted by vlad_robas

I'm mainly intrested in printing quality, I did a few copies and they are the same (or almost) as print.

1. I don't know how to execute PG10 test, please explain.
2. I didn't check that yet
3. [ATTACH]23274[/ATTACH]
first 2 pages are realative ok

-------------------------------------------------------

those gradation test prints are perfect/ that means your Laser is point on (good)
also means ITB is working -transfer is working-& fuser is good

next thing to focus on is the READER operation (OPTICS) original exposure system> when u scan those into Printer for Gradation > the Lamp moves under to read> sends to CCD> to main pcb's>to DCpcb

SCANNER.JPG

**charm5496** · 12-17-2013, 07:34 PM

Re: iRC 4080i autogradation

what happens when you run the same job on plain paper with the drawer set to plain? Is the print quality back to the normal density or is it still light?

**Smartmind** · 01-03-2014, 07:57 AM

Re: iRC 4080i autogradation

Originally posted by teckat

----------------------------------------------------------------
Forget about calibration for now---
are all Glass Copies washed out as well as Test Prints/Network Prints ??

or is issue on Glass copies only ? (all starts with the Reader>original exposure> )
if Calibration measurement pages are good >then placed on glass>CCD>Analog AD Conversion>Reader pcb>Digital Process

image data (RGB data) collected by the CCD is processed by the main controller PCB (sub SJ-A, sub R-A, sub PDRM-PE-A).
Main Controller Circuit Board (SUB PDRM-EFA)[gradation conversion]

1-how does the PG10 Test print look ? post it here

2-did u check the images on ITB before Secondary transfer roller ?

3-on the Calibration sheet< are the colors washed out ?

Hello guys!
We have the exactly same problem in our office with an iRC4080. All colors prints are very light on any glossy 11x17 inch page, plus 1 inch wide multi-color line(Yellow, Cyan an Magenta) in the middle of the page on any color copies or prints.
when we do black & white letter size copies the first five pages has the multicolor line, and some others yellow lines on the sides especially when we do auto-gradation, after that all our black & white copies are good.
I think that our colors drums are close to it life end.
by the way, we gently cleaned up the transfer belt.
our question is:
Can this lightly printing problem be caused by a faulty drum?
another curiosity:
Some times the last color image print, Come over the next print or copy we can see an almost transparent yellow image over the new print, is this caused by a faulty ITB Belt?
Thanks in Advance for helping us.

**teckat** · 01-03-2014, 03:41 PM

Re: iRC 4080i autogradation

Originally posted by Smartmind

Hello guys!
We have the exactly same problem in our office with an iRC4080. All colors prints are very light on any glossy 11x17 inch page, plus 1 inch wide multi-color line(Yellow, Cyan an Magenta) in the middle of the page on any color copies or prints.
when we do black & white letter size copies the first five pages has the multicolor line, and some others yellow lines on the sides especially when we do auto-gradation, after that all our black & white copies are good.
I think that our colors drums are close to it life end.
by the way, we gently cleaned up the transfer belt.
our question is:
Can this lightly printing problem be caused by a faulty drum?
another curiosity:
Some times the last color image print, Come over the next print or copy we can see an almost transparent yellow image over the new print, is this caused by a faulty ITB Belt?
Thanks in Advance for helping us.

----------------------------------------------------------------------------------------

1-? are u a qualified tech -if so are u trained on this model ? sounds like NO ~~~~~~~~~~~~~
2-has anyone removed the ITB Unit > (how old, when replaced ? )then removed the ITB Sheet to inspect & clean underside & black rubber roller & to inspect the position of the PRIMARY Roller for Yellow

all of the rollers must be in place on both ends (the small black holders can crack & springs come off> will cause a roller to push up underneath belt and drag on it's drum surface > that can cause yellow band)

3-? how old are DRUM UNITS (% AMT )
4-how much color coverage is present on 11x17 glossy paper ?
5-has anyone removed fix unit to inspect ( major issue in these models )

**Smartmind** · 01-03-2014, 07:31 PM

Re: iRC 4080i autogradation

Originally posted by teckat

----------------------------------------------------------------------------------------

1-? are u a qualified tech -if so are u trained on this model ? sounds like NO ~~~~~~~~~~~~~
2-has anyone removed the ITB Unit > (how old, when replaced ? )then removed the ITB Sheet to inspect & clean underside & black rubber roller & to inspect the position of the PRIMARY Roller for Yellow

all of the rollers must be in place on both ends (the small black holders can crack & springs come off> will cause a roller to push up underneath belt and drag on it's drum surface > that can cause yellow band)

3-? how old are DRUM UNITS (% AMT )
4-how much color coverage is present on 11x17 glossy paper ?
5-has anyone removed fix unit to inspect ( major issue in these models )

Hello Teckat!
Well, I have not much experience with this canon iRC machines, but we have someone in charge on this issue but he doesn't have a solution yet, so I'm trying to help to fix this color printing problem. we already checked the ITB assy everything is ok. we will proceed to inspect the fixing unit.

**teckat** · 01-03-2014, 08:02 PM

Re: iRC 4080i autogradation

Originally posted by Smartmind

Hello Teckat!
Well, I have not much experience with this canon iRC machines, but we have someone in charge on this issue but he doesn't have a solution yet, so I'm trying to help to fix this color printing problem. we already checked the ITB assy everything is ok. we will proceed to inspect the fixing unit.

-----------------------
person in charge ? is that a tech ?
this model requires some hands on experience > especially with the fix unit

u also need to inspect the DRUMS----

iRC 4080i autogradation

iRC 4080i autogradation

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