[CQ] IRC2550/3380 Image Lighter when Continue Copy/print

[nochick]

Hello

this ploblem never happen in irc3200 model

but 10 machines of irc2550/3380/3580 I found this same problem.

PROBLEM : WHEN COPY or Print Continue the 4th or 5th or maybe 10th copy in the same order will be lighter
But when order just 1-2 copy it will be fine.

TRYING : 1. Full Gradation

RESULT : It's extend the number of copy before the same problem come back

Machine Condition : TEST 12 Fine TEST 4 CMYK Look Good

What should i do?

Please help and Thank you

[teckat]

Re: IRC2550/3380 Image Lighter when Continue Copy/print

Hello

this ploblem never happen in irc3200 model

but 10 machines of irc2550/3380/3580 I found this same problem.

PROBLEM : WHEN COPY or Print Continue the 4th or 5th or maybe 10th copy in the same order will be lighter
But when order just 1-2 copy it will be fine.

TRYING : 1. Full Gradation

RESULT : It's extend the number of copy before the same problem come back

Machine Condition : TEST 12 Fine TEST 4 CMYK Look Good

What should i do?

Please help and Thank you

----------------------------------------------
Check the Bias Tabs on the ITB Belt assembly and the Secondary Transfer Roller. They may be bent or broken and not making contact. Repair or replace the contact that is broken.



Verify that the contact is touching the bottom side of the shaft of the secondary transfer roller as shown in the photo below. If it is not reform the contact so that it is touching the shaft.




It has been found that the bias tab for the transfer roller assembly can become bent and making poor contact.





or---------------
Try replacing the Secondary Transfer Roller Assembly FM2-5526-000 (Paper Feeder Frame Assembly) on the Right Door Assembly

[teckat]

Re: IRC2550/3380 Image Lighter when Continue Copy/print

Hello

this ploblem never happen in irc3200 model

but 10 machines of irc2550/3380/3580 I found this same problem.

PROBLEM : WHEN COPY or Print Continue the 4th or 5th or maybe 10th copy in the same order will be lighter
But when order just 1-2 copy it will be fine.

TRYING : 1. Full Gradation

RESULT : It's extend the number of copy before the same problem come back

Machine Condition : TEST 12 Fine TEST 4 CMYK Look Good

What should i do?

Please help and Thank you

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


to add on---------------------------------------------
Light image occurs when printing a large quantity of data with high image ratio continuously

1. In order to increase the T/D ratio, set a value with the plus (+) sign for the following service mode: Service Mode (level 2) > COPIER > Adjust > DENS > P-TG-Y/M/C/K (adjustable range is '-4' to '4'; default is '0').


2. In order to reduce fogged image resulting from the slightly increased T/D ratio, increase the setting value of the following service mode: Service Mode > COPIER > Option > BODY > PAP-W-EN (adjustable range is '0' to '10'; default is '0').

3. In order to decrease the ATR patch intervals, set a value with the minus (-) sign for the following service mode: Service Mode (level 2) > COPIER > Option > BODY > P-INTVL (adjustable range is '-2' to '2'; default is '0'). Be sure to select the most appropriate setting value while checking the output images.

Note: As a negative effect of the settings above, depending on the operational environment or the duty of originals, the T/D ratio may be increased, and thereby causing fogged images. Particularly, when images with low duty are made frequently, too much toner may be supplied to developing assemblies.