kyocera taskalfa 7052ci blurred image in printing + copying

[rickirobert]

Hello everyone ,

I have a copier that prints blurred footers in A4 portrait
look at the attached documents

the LSU has been changed but the problem is the same

the machine is up to date for the firmware
I recalibrated it
for the black it s ok, but yellow, magenta, cyan no
if you have an idea ? thank you

[sparkycivic]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

can you show us a U89 sample set?
is the problem uniform across the page or limited to an area?
has the transfer belt been removed/inspected/re-inserted?
life of drums/MK?
any C-codes stored?

[rickirobert]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

here are the u89s
the TR has been changed to a new one and the problem is the same.
it is only the bottom of the page which is blurred on 2 3 cm
Thanks for your help

[blackcat4866]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

Has that laser been disassembled and mirrors cleaned?

I've done this to myself before. In a dirty environment the mirrors, lenses, and polygon mirror motor can get very dusty. In the process of cleaning the mirrors, it's sometimes necessary to remove one mirror to access others. These are all front surface mirrors, and I have inadvertently installed one of the mirrors reversed, creating a very subtle double image: reflection & refraction. =^..^=

[rickirobert]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

hello
I had changed the Magenta LSU laser with a new one and the problem is identical, cloudy image and white band.
I wonder if I should not put a ferrite around the cables that connect to the lasers ?

[sabbish]

[fishleg]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

It's a faff but I'd be taking the Devs to another machine or replace the worse one just to see if issue improves.

It's different on every colour so I'd be concentrating on Devs after ruling out belt & lasers. Drum issue would cause dark image.

[ThisPete]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

I'd be looking at cleaning up that end of the mag rollers, KM3050's and 3035's used to do it and I have seen it on more recent machines too, sometimes a clean sorts it, sometimes it comes back and a new dev unit is required.

[tee]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

Is there any toner spilling from that side of the machine?
It looks like a drum/charge issue or possibly 2nd transfer if the
polygon motor mirrors are pristine on the tips.

[Rpizzle]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

I would have to agree with fish up there, used to have 3050cis do this all the time.

[Ropariva]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

Hello everyone ,

I have a copier that prints blurred footers in A4 portrait
look at the attached documents

the LSU has been changed but the problem is the same

the machine is up to date for the firmware
I recalibrated it
for the black it s ok, but yellow, magenta, cyan no
if you have an idea ? thank you

[pascalb.]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

hello,

Maybe the lasers should be reset?
U467 / Color Regist switch to Off
switch off /on, the machine.
return to U467 / Color Regist reset to On
then do a Color Registration manual in System menu.
good luck.

[PrintWhisperer]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

hello,

Maybe the lasers should be reset?
U467 / Color Regist switch to Off
switch off /on, the machine.
return to U467 / Color Regist reset to On
then do a Color Registration manual in System menu.
good luck.

Winner winner chicken dinner, nice recall.

First time seeing this on a "2" series (many '3' series Hi-volume have had this problem). In MM467 it's 'Auto Color Regist' and it gets scrambled data so the above will reset the values.

Remember all colors reference black base value so black isn't affected.

[rickirobert]

Re: kyocera taskalfa 7052ci blurred image in printing + copying

Hi all,

I thank Pascal who knows these machines perfectly and following his precious help everything is ok