IRC-4080 Registration problem

[jose antonio]

Hi,

Please help..see attached pdf for a copy quality issue with the registration on a canon IRC-4080.

What i did so far: removed ITB belt, inspect and cleaned inside belt checked all rollers, everything looks OK on ITB, performed Registration clear as per service mode REG-CLR,+ LD-ADJ-Y,M,C all passed with OK. I even removed the BK laser to make sure the lens is centered. Also checked each laser values on the units labels are set correctly in service mode.

lastly performed a DC-CON clear and input all settings from a P-print, but problem stayed.

As you can see on the attachment the registration varies from top to bottom.

MN-Cont version 79.01.

I am really clueless with this,.. any help much appreciated.

Jose Antonio

[teckat]

Re: IRC-4080 Registration problem

Hi,

Please help..see attached pdf for a copy quality issue with the registration on a canon IRC-4080.

What i did so far: removed ITB belt, inspect and cleaned inside belt checked all rollers, everything looks OK on ITB, performed Registration clear as per service mode REG-CLR,+ LD-ADJ-Y,M,C all passed with OK. I even removed the BK laser to make sure the lens is centered. Also checked each laser values on the units labels are set correctly in service mode.

lastly performed a DC-CON clear and input all settings from a P-print, but problem stayed.

As you can see on the attachment the registration varies from top to bottom.

MN-Cont version 79.01.

I am really clueless with this,.. any help much appreciated.

Jose Antonio

Did u remove the patch read unit ?
Inspect \ take apart clean
Make sure it's sitting correct

I would Make sure all Lasers are in there home position manually.


After removing the laser from the machine remove the two black screws from the metal cover. Turn the cam gear until you hear the mirror pop.
Turn the gear 1/2 of a rotation to center the mirror. To check if the mirror is centered correctly look through the small hole in the metal plate above the white gear.
Make sure the cam on the gear is centered in the hole. Reassemble the laser and install it back in the machine. After the machine comes to ready run an Auto Gradation Quick Adjust.

U also need update Firmware to v.94

Another point to note;
Make sure your ITB UNIT is caming up level.
Gut out ITB, FUSER, & Drums\dev. , look inside while turning bed handle,

also check Both of the side rails(front -rear) that ITB slides onto for damage./
inspect that GEAR UNIT for damaged/worn Helical Teeth (////) --they sometimes look good at an angle/ but they will walk over each other when printing kicks in--- can cause miss registration with out error codes

ITB RAIL.jpg

[jose antonio]

Re: IRC-4080 Registration problem

Did u remove the patch read unit ?
Inspect \ take apart clean
Make sure it's sitting correct

I would Make sure all Lasers are in there home position manually.


After removing the laser from the machine remove the two black screws from the metal cover. Turn the cam gear until you hear the mirror pop.
Turn the gear 1/2 of a rotation to center the mirror. To check if the mirror is centered correctly look through the small hole in the metal plate above the white gear.
Make sure the cam on the gear is centered in the hole. Reassemble the laser and install it back in the machine. After the machine comes to ready run an Auto Gradation Quick Adjust.

U also need update Firmware to v.94

Another point to note;
Make sure your ITB UNIT is caming up level.
Gut out ITB, FUSER, & Drums\dev. , look inside while turning bed handle,

also check Both of the side rails(front -rear) that ITB slides onto for damage./
inspect that GEAR UNIT for damaged/worn Helical Teeth (////) --they sometimes look good at an angle/ but they will walk over each other when printing kicks in--- can cause miss registration with out error codes

[ATTACH=CONFIG]31027[/ATTACH]

Checked the gears on the belt drive plus lift mechanism..all looked okay, one thing though i noticed after close inspection.. the belt is traveling to one side and the inside edge is jumping over the roller end. I am trouble shooting this issue now and will get back soon.

jose antonio

[teckat]

Re: IRC-4080 Registration problem

Checked the gears on the belt drive plus lift mechanism..all looked okay, one thing though i noticed after close inspection.. the belt is traveling to one side and the inside edge is jumping over the roller end. I am trouble shooting this issue now and will get back soon.

jose antonio

Few things can cause this===
-Old Belt (interior slick/stretched), that interior black rubber roller has a slick surface (use a non-scratch pad to clean)

Occasionally, the Intermediate Transfer Belt (ITB) Assembly becomes out of alignment. ITB Assembly misalignment is largely due to the misalignment of the front and rear ITB rails. If misalignment occurs, the
ITB Assembly may lean to one side.

see attach ===adjustment helps with drift & tears of belt

[teckat]

Re: IRC-4080 Registration problem

added in v79.01.

REG-SPD, REG-SPD2 and REG-SPD3

Service Mode settings that have been introduced to improve Front to Rear Trail Edge Blur and Second Side Mis-Registration image shift. The details of each
Service Mode setting are described as follows:
SERVICE MODE (Level 2) > COPIER > OPTION > BODY
REG-SPD2: REG-SPD3: "Fine adjustment (Transparency/Glossy paper) of the registration roller speed.
Execute the fine adjustment of Registration Roller speed in this mode to improve:
- Front to Rear Trail Edge Blur (approximately 120mm from the trail edge) that may appear on the image due to the paper tension or paper arch between the Registration Roller and the Secondary
Transfer Roller.
- The second side of a printed or copied document has shifted out of specification (2.5 +/- 2.0mm leading edge margin on the 2nd side).
Use this mode when adjusting the process speed for transparency/glossy paper.
Setting values
- 5 to + 5
- Default (factory) setting/ value after RAM clear: 0
Increasing (decreasing) the setting value by ""1"" accelerate (decelerate) the delivery speed of the roller by ""0.5%"". (Example: Changing the value from 0 to - 2 decelerate the speed by 1.0 %.)

[jose antonio]

Re: IRC-4080 Registration problem

Few things can cause this===
-Old Belt (interior slick/stretched), that interior black rubber roller has a slick surface (use a non-scratch pad to clean)

Occasionally, the Intermediate Transfer Belt (ITB) Assembly becomes out of alignment. ITB Assembly misalignment is largely due to the misalignment of the front and rear ITB rails. If misalignment occurs, the
ITB Assembly may lean to one side.

see attach ===adjustment helps with drift & tears of belt

I installed another belt but din't help, so i proceeded with the lasers and manually put the arrow on the middle on all of them, than did a quick gradation adjust, this seemed to help.

It is still a little off by half a mm on one side only when printing the the #6 test page. I think i need to check that belt assembly further.

At least i can make some copies now until i have more time to dig deeper in to it.

Thanks for your help!

[jose antonio]

Re: IRC-4080 Registration problem / Update,

I installed another belt but din't help, so i proceeded with the lasers and manually put the arrow on the middle on all of them, than did a quick gradation adjust, this seemed to help.

It is still a little off by half a mm on one side only when printing the the #6 test page. I think i need to check that belt assembly further.

At least i can make some copies now until i have more time to dig deeper in to it.

Thanks for your help!

Here is an update on this problem,
Have been struggling whith this for a long time, and never got perfect registration like it should.

But now finally I got the culprit; that metal plate sitting under the ITB assy!

Donot remove that plate! It has a purpose, adding strength to the ITB assy. There is a post somewhere on this forum suggesting to remove and discard it.

Well mi answer to it is simple: Do not! Found out the hard way, have 2 of these machines with the plates removed, and all have the same registration issue's.

The plates add strength to the assembly specially when it is camed up for operation.

After reinstalling the plates registration is perfect again, no more issues.

[zoraldinho]

Re: IRC-4080 Registration problem

Interesting!


Small metal plate with green varistor or the big one?

[teckat]

Re: IRC-4080 Registration problem / Update,

Here is an update on this problem,
Have been struggling whith this for a long time, and never got perfect registration like it should.

But now finally I got the culprit; that metal plate sitting under the ITB assy!

Donot remove that plate! It has a purpose, adding strength to the ITB assy. There is a post somewhere on this forum suggesting to remove and discard it.

Well mi answer to it is simple: Do not! Found out the hard way, have 2 of these machines with the plates removed, and all have the same registration issue's.

The plates add strength to the assembly specially when it is camed up for operation.

After reinstalling the plates registration is perfect again, no more issues.

================================================== ===========================

That Large Metal Plate is a useless piece of crap, have removed on over 100 of these iRC3200/5280 Models with no issues.(just reconnect/ground other end of varistor to leaf spring)

If fact it causes many issues> waste toner build up on underside deposits on paper, customer reaches in for jam< bends plate to belt-damaged belt .
Techs bend plate when attaching=eventually damages ITB.
Techs forget or misplace screws on pate = result is plate out of position.
& many more~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Cams never contact Plate. Has nothing to do with stability of ITB.

There is no perfect registration on these models> GRID PATTERN points that out eventually .

ITB Belt Drift is caused by many contributing factors, including > worn underside of belt/ interior dirty_slick Large black drive roller/ primary rollers not locked in place on both sides/ cracked ITB Rail/ damaged cam/ bad_old cleaning blade/ worn-damaged ITB drive gears/ secondary transfer roller out of position / etc etc


anytime a customer displays a jewelry loop for me to look at registration , I usually throw it in the nearest garbage can.

[jose antonio]

Re: IRC-4080 Registration problem / Update,

================================================== ===========================

That Large Metal Plate is a useless piece of crap, have removed on over 100 of these iRC3200/5280 Models with no issues.(just reconnect/ground other end of varistor to leaf spring)

If fact it causes many issues> waste toner build up on underside deposits on paper, customer reaches in for jam< bends plate to belt-damaged belt .
Techs bend plate when attaching=eventually damages ITB.
Techs forget or misplace screws on pate = result is plate out of position.
& many more~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Cams never contact Plate. Has nothing to do with stability of ITB.

There is no perfect registration on these models> GRID PATTERN points that out eventually .

ITB Belt Drift is caused by many contributing factors, including > worn underside of belt/ interior dirty_slick Large black drive roller/ primary rollers not locked in place on both sides/ cracked ITB Rail/ damaged cam/ bad_old cleaning blade/ worn-damaged ITB drive gears/ secondary transfer roller out of position / etc etc


anytime a customer displays a jewelry loop for me to look at registration , I usually throw it in the nearest garbage can.

Well for me it worked, maybe on the IRC-3200 series there is no effect on the ITB unit, but in mi case ( irc-4080) this was clearly the culprit and i have the proof for this, will send the pdf files later.

All mi ITB belts are clean and there is no wear on any rollers or damage to rails and cams.

Jose Antonio.

[teckat]

Re: IRC-4080 Registration problem / Update,

Well for me it worked, maybe on the IRC-3200 series there is no effect on the ITB unit, but in mi case ( irc-4080) this was clearly the culprit and i have the proof for this, will send the pdf files later.

All mi ITB belts are clean and there is no wear on any rollers or damage to rails and cams.

Jose Antonio.

Amen I Say ;-)