Print Quality Issues on MX-5001N !Posterize!

[Kirkc]

We are having a print quality issue on our MX-5001N we are printing a good bit every week for a local publication/magazine we do on average of 500 11x17 front and back stapled pamphlet color covers and b&w inside with a color center page and after about 100 copies it starts POSTERIZING the color pages and loses all of its Gradient detail I will run a print calibration and Gama calibration and it will run a few more properly then start again has anyone had this issue before?

[Akitu]

Re: Print Quality Issues on MX-5001N !Posterize!

Posterizing? I'm not sure I understand. Can you elaborate or attach a sample?

[Kirkc]

Re: Print Quality Issues on MX-5001N !Posterize!

It starts to lose its gradient recognition and blobs colors this one attached is actually not as bad as it gets but its starting again


GOOD - Left Side
BAD- Right Side

Notice the boys face shadows and hair ect on the right are blobbing togeather

[mojorolla]

Re: Print Quality Issues on MX-5001N !Posterize!

My "full calibration" is as follows:
Clean all 4 chargers and LSU slit glass. Clean the procon sensors with a q-tip. In odd situations, I will remove the platen glass and clean it and the mirrors in the optic cavity.
50-22
50-28 (on the Aries, Virgo, and Polaris, run 50-28 first, then 50-22)
44-2
44-13 (with the jig)
44-6
44-27 to reset half tone
44-26 to set half tone
46-74 (can be run a few times)
63-8
67-28 (these lock in the targets for scan and print)

If you still have issues:
-when it starts "posterizing" yank open a door while its running. See if you can determine if it is happening before the fuser as the cleaning belt on the model (and the 7001) can cause a lack of detail when the belt surface gets gunked up.
-I am assuming these are print jobs so 67-17 will flush print memory, seen this fix blurred images before.
-you mentioned Ledger paper size, 48-6 is to adjust fuser speed. Increase the setting 5-10. The fuser can get out of sync on Legal and Ledger.
-63-11 and select a new target, then run full calibration again. DEF1, which is default, leans towards magenta. DEF2 is right in the middle of the color wheel. DEF3 leans towards cyan.

[Akitu]

Re: Print Quality Issues on MX-5001N !Posterize!

I believe on a 5001, sim 46-74 can be performed to the same effect. Definitely seems like it might need calibration as Mojorolla said.