imagePress C1 - Streaks in Images

[mynameis]

Hey there.

After changing 2 devs including fillings (C and M) and performing INISET for both colours, the machine produces streaks in all colours. Streaks are in printing direction. See pics attached.
PG10 looks absolutely normal.

Performed all cleaning options in sm - no change.
Used a custom paper size as the paper is then not passing the duplex unit - same result.

Any help would be much apreciated.

[zoraldinho]

Re: imagePress C1 - Streaks in Images

Make a force stop and check print quality before fuser!

Did you replace whole developer unit or just developer(powder)

Perform:

Auto Gradation Correction. Execute auto gradation correction
(full adjust) according to the instruction on the display.

If the Developer Tank (containing Developer) is replaced, the procedure below should NOT be followed, as the Developer is aged in the factory



Service Mode: COPIER >FUNCTION > INSTALL > AINR-OFF; then, enter '1' and press the OK key.

Y developing assembly: COPIER > FUNCTION > INSTALL > INISET-Y
M developing assembly: COPIER > FUNCTION > INSTALL > INISET-M
C developing assembly: COPIER > FUNCTION > INSTALL > INISET-C
Bk developing assembly: COPIER > FUNCTION > INSTALL > INISET-K

[teckat]

Re: imagePress C1 - Streaks in Images

Hey there.

After changing 2 devs including fillings (C and M) and performing INISET for both colours, the machine produces streaks in all colours. Streaks are in printing direction. See pics attached.
PG10 looks absolutely normal.

Performed all cleaning options in sm - no change.
Used a custom paper size as the paper is then not passing the duplex unit - same result.

Any help would be much apreciated.

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

Make sure the end portion(s) (rear/front) of Mylar (A) has not come off post duct in P-kit assembly
lines (smeared image) [C] will occurr in the main scanning direction (the paper-feeding direction [B]).
the adhesion of bonding material that is applied to the post duct was improved.
Replace the post duct with a new one.
FL2-2675-010 Post Duct

Also check

ITB Cleaning Assembly / FM2-2455-000,
ITB Cleaning Assembly 2 FM2-2456-000,
Inner Transfer Roller FC6-1545-000 and Secondary Transfer Cleaning Brushes FC6-1645-000 (2)

[mynameis]

Re: imagePress C1 - Streaks in Images

Thanks guys.

Did not do anything to the drum/mylar film, but i will check that if nothing else helps. In my experience the problems coming from the mylar look different. Also the smears from transfer cleaning are different. Here it is really the definite colour smearing, not waste toner from cleaning units.

It went a little better after performing gradation adjustment, as the colours went a little lighter.
It is also better or nearly gone on very thin 80gsm paper.

So i assume it might be a fusing problem?

[cedarstreet]

Re: imagePress C1 - Streaks in Images

I would suspect the plastic spatter shield on one of the developer units is deformed causing it to drag on the drum as it goes around - I would also force stop and pull the drum unit and inspect the image as well as looking at the itb to narrow down where the dragging is occuring - still would start with the developers - does it occur when you make a single color print? maybe that would help narrow down if it was a single developer or further along in the process

[mynameis]

Re: imagePress C1 - Streaks in Images

plastic spatter shields: check.
mylar on drum: check.

everything is fine there. will do some more testing tomorrow.
any more tips are very welcome.

[jhoncrema]

Re: imagePress C1 - Streaks in Images

Check o Change laser unit


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[mynameis]

Re: imagePress C1 - Streaks in Images

Good morning all helplings.

After some other tests, i switched the transfer unit from another machine and the problem is gone.

Now there are two more issues to solve:

1. Offset in colours C and M. See pic 1

Q: is there an automatic registration procedure i could perform?

2. A little spot pressed into the paper. See pic 2. Intervall is 218 mm.
-> Spot is not there when not passing the paper thru the duplex unit by using a custom paper size.

Q: Any tips where to look at - which roller? Never worked on the duplex unit...

Thanks in advance for any tips.

[teckat]

Re: imagePress C1 - Streaks in Images

Good morning all helplings.

After some other tests, i switched the transfer unit from another machine and the problem is gone.

Now there are two more issues to solve:

1. Offset in colours C and M. See pic 1

Q: is there an automatic registration procedure i could perform?

2. A little spot pressed into the paper. See pic 2. Intervall is 218 mm.
-> Spot is not there when not passing the paper thru the duplex unit by using a custom paper size.

Q: Any tips where to look at - which roller? Never worked on the duplex unit...

Thanks in advance for any tips.

================================================== ================
Dot Mark
may be result of foreign object in the Developing Assembly, Drum
Cleaning Assembly and in some cases, the Image Scan Patch Sensor.
foreign object strikes the Drum during the development process
vacuuming the Developer Assemblies, Cleaning Assemblies and opening and cleaning the Image Scan Patch Sensor


what type of paper are u using with all the color saturation on it ??
& how much coverage on paper ??


Color Registration----
color displacement, it may be caused by fault of each laser scanning system, transfer (intermediate
transfer/secondary transfer) unit or photosensitive drum drive unit.

is reg issue in sub-scan(paper feed) or main scan direction

-check and clean the white reference sensor surfaces located underneath the ITB Belt
-replace both PS1 and PS2 ITB Belt Home Position Sensors

- I.T.B. POSITIONING ASSEMBLY = FM2-2499-000

[jhoncrema]

Re: imagePress C1 - Streaks in Images

Check the laser unit


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