[CQ] Task alfa 250ci-print/copy-quality issuse

[canrajedwin]

HAI ALL,

Iinstallaed one 250ci recently,but it giving (white line/lines in thik or single) line in hirizondaly over the image
I done

1.calibration
2laser cleaning
3.gray adjust
4.physicaly cleaned the t/f belt

even not solve the problem pls give some solution

[Eric1968]

Did you check the drum/dv-units?

[canrajedwin]

yes i cleaned both but nothing ubnormal:::

[blackcat4866]

Does it show up in U089 gray test prints, and affecting which colors?

[aabarnes1]

Are you getting any error codes in the service report, paricularly the code relating to the colour release motor? There is a TB in relation to this error- your problem sounds familiar.

[NeoMatrix]

Place a sheet of A4 on the glass for the first 25mm , leave the rest of the A4 sky shot so the copy comes out black.

Are the lines still there ?

Do a drum preconditioning to remove any moisture concerns.

I'm leaning towards dirty primary corona wires.... Give them a scrub with your spring-hook (for the purists out there use soft fluffy gentle cotton wool)....

HTH
GDM

[blackcat4866]

... I'm leaning towards dirty primary corona wires.... Give them a scrub with your spring-hook (for the purists out there use soft fluffy gentle cotton wool)....

HTH
GDM

Sorry, Neo. No wires. Charge rollers. And when they build up with ozone they tend to create dark bands crossfeed, best seen on U089 engine prints. =^..^=

[NeoMatrix]

Whoops solly ollie wrong info... No coronas on them ones...

Goes to show I work on to many model and makes of machines. Ricoh, Brother,Sharp,Kyocera,HP, Casio, Fellows, Panasonic, aaahhhhh.... Yes the T/A 250ci is the same as T/A 300/400/500 series.

Ok blackcat you say it is the "ozone" in the roller that creates the bands ? I always thought it was the layered toner creating a reverse charge capitance effect.

GDM

[blackcat4866]

Yep, ozone. And the best way to clean it is with water or ammonia-free glass cleaner. But don't soak, just keep wiping ~3 times around.

If it gets beyond a certain point it just doesn't help. I've seen a few VoyagerE series that the charge roller gets lumpy, producing a pattern of round dots ~6mm dia. =^..^=

[canrajedwin]

Thks 4 u all to his suppo:
I colud saw there are some white lines in corona rollers I cleaned with water for all CMYK rollers .after that again i done 1.drm refru:2.deve refru:,3.calib:gray adj: cpoy and print became ok and good
but after that
The 2nd day customer called and saying that grainey images are comming.this is very new machine only 350 copies taken so far.I must solve this issue immediately otherwice?????????

[NeoMatrix]

White lines on the charge rollers after how many copies ? 350 copies ???

Thats not normal for a new machine. That usually only happens after quite a few copies have gone through the PCU.

First impression for me, it appears like someone is doing something under-handed or illegal.
Has another Tech, Salesman or Customer swapped parts out of a second machine ?
Has the customer swapped parts out of their other 2nd machine into the new one ?

Swap the PCU's with new ones but write your initals secretly on the PCU's next time to keep track of them.

If that doesn't work then you have some seriously bad reems of paper with very bad lint(paper-dust) problems.....

GDM

[SID.KADEN]

The 2nd day customer called and saying that grainey images are comming.this is very new machine only 350 copies taken so far.I must solve this issue immediately otherwice?????????

[NeoMatrix]

Yep, ozone. And the best way to clean it is with water or ammonia-free glass cleaner. But don't soak, just keep wiping ~3 times around.

If it gets beyond a certain point it just doesn't help. I've seen a few VoyagerE series that the charge roller gets lumpy, producing a pattern of round dots ~6mm dia. =^..^=

Re: Charge rollers.
Yes water is the normal cleaning fluid for me, I'm not to sure about using anything else.
As you know the Ricoh MPC's have a very thin layer around the charge roller that can peal off easy if you rub too hard.
Gives me the sh!@# when the charge rollers do that. I'm nearly always cut for time an I hate fiddling around with the charge rollers. Just one of those jobs that must be done. I only wish they made the layer on the charge rollers a bit thicker so we can
wipe a bit harder in our haste.

[canrajedwin]

yes i am also suspecting about paper quality.they are using 220 gsm art paper for print.
pls let me know some recomented papers for this machins which are available in indian market.
and
pirnt options for 100 gsm and 220 gsm papers
like cardstock ,thik, special paper?which mode for which paper????thank you