TASKalfa 4551ci media type settings quality difference???

[cmpelser]

Hi, I have a problem with a machine.
I've been battling with this machine for months now...
I've got normal paper in all trays, and it prints with a horrible colour background. However if I change the media type to thick paper, still using the normal paper. It prints perfectly whithout the background!

[itchyfinger@att.net]

Re: TASKalfa 4551ci media type settings quality difference???

Hi, I have a problem with a machine.
I've been battling with this machine for months now...
I've got normal paper in all trays, and it prints with a horrible colour background. However if I change the media type to thick paper, still using the normal paper. It prints perfectly whithout the background!

Had this problem on CS 6551ci make sure firmware is up to date and use current driver fixed mine

[cmpelser]

Re: TASKalfa 4551ci media type settings quality difference???

Nope, tried that... Also downgraded and tried upgrading incrementally... No difference...

[cmpelser]

Re: TASKalfa 4551ci media type settings quality difference???

I've uploaded a picture.

[mike4001]

Re: TASKalfa 4551ci media type settings quality difference???

what's the colour of the background cant tell from the photo is it a grey? I have had this problem changed the black dev upgraded the firmware and calibrated the colour 410 and 412 printed fine after that. I also had it on the 3051ci and it turned out to be the lazer unit. of which have had 4 go wrong.

[cmpelser]

Re: TASKalfa 4551ci media type settings quality difference???

Black and white is absolutely perfect. It's only when printing anything in colour. The background is comprised very evenly of cyan magenta and yellow...
But like I said in my first post... If I change the paper type setting from plan paper to thick paper... Then it prints perfectly fine whithout any background!

[jmaister]

Re: TASKalfa 4551ci media type settings quality difference???

have you tried reseating the transfer belt? pullout the unit then push it back in gently. If it only happens with color then one of the place to check is T belt.

and/or the 2ndary transfer roller is faulty(foam roller).

and then High Voltage board, since we are talking about surface potential on the whole page beyond on all 3 colors.

[cmpelser]

Re: TASKalfa 4551ci media type settings quality difference???

Hi, yes... I have switched around the transfer belt and hi voltage board with another machine... No difference...
I've luckily got a few of these machines at the same customer...
I've been trying to move the problem to another machine by switching parts around. I've changed everything I can think of. Nothing is working...

[mike4001]

Re: TASKalfa 4551ci media type settings quality difference???

Just a Quick thought what toner is being used genuine or not?

[cmpelser]

Re: TASKalfa 4551ci media type settings quality difference???

Only ever original genuine toners!

[cmpelser]

Re: TASKalfa 4551ci media type settings quality difference???

hi,

I'm starting to think that maybe something went corrupt within the prescribe settings... is that even possible?
I don't know much about prescribe...

[jmaister]

Re: TASKalfa 4551ci media type settings quality difference???

where is this located? Pretoria? have you tried high altitude setting?

[cmpelser]

Re: TASKalfa 4551ci media type settings quality difference???

Hi, no... Not altitude settings...
Like I said before, absolutely perfect prints on thick paper setting only. All other media type settings regarding paper weights lighter than "heavy 1" ie. Normal 1 2 3 etc. I'm getting obvious colour background. It's an even tone of magenta cyan and yellow... (full page, all the way to the edges)

[jmaister]

Re: TASKalfa 4551ci media type settings quality difference???

Hi, no... Not altitude settings...
Like I said before, absolutely perfect prints on thick paper setting only. All other media type settings regarding paper weights lighter than "heavy 1" ie. Normal 1 2 3 etc. I'm getting obvious colour background. It's an even tone of magenta cyan and yellow... (full page, all the way to the edges)

Thick paper setting does change bias and speed. With all the parts you mentioned having been replaced theres two things left, paper stock or its environmental.

The only environmental effect i have ever heard of is altitude, AC calibration has altitude modes.



fyi, need a better sample, cant see through the blurr.

[cmpelser]

Re: TASKalfa 4551ci media type settings quality difference???

Thick paper setting does change bias and speed. With all the parts you mentioned having been replaced theres two things left, paper stock or its environmental.

The only environmental effect i have ever heard of is altitude, AC calibration has altitude modes.



fyi, need a better sample, cant see through the blurr.

I've played around with the altitude settings, it's not making much difference. Do you know what biases get changed with thick paper settings?