DC700 Black printing low gloss

[azehnali]

Re: DC700 Black printing low gloss

seattle guy
if you run the regcon test print the cmyk color should and will have the same gloss
has nothing to do with all the other bs
you are running all individual colors on the same paper and the same fuser
come on man

[ktxerox]

Re: PLEASE READ SLOWLY...

Thanks Ianizer,
For the detail discription on this issue. as you can see in my last thread it was working fine before that fault. previous black prints were ok with enough gloss but after that fault if we compare with previous prints there is big diffrence in both of them.

i agree with you there less gloss in black than other colors but it's not notice able becuase clinet can't see that diffrence.

I do think I understand a little better now, thank you, Kt. I'd like to duplicate this on my 700, but I suspect black alone will have a lesser gloss than color, most especially in process color... (You may find that true single color has slightly lesser gloss than mixed color).

The reason?...

Gloss is a function of fusing and toner composition. That is, your image can only be as glossy as your heat roller is smooth and your toner lets it be.

When you output your image, the color areas will, of course, be glossier than K only since the color areas have three or four layers of toner applied to mix the appropriate color. The more toner, the more gloss.

Stay with me...

Some drivers and controllers (specifically, if you are using Fiery) will have a color setting available to use K toner only for K image area... Thus the partial matte areas where there is K black only. This mechanism is primarily to give a generally desired true plain black, (and to save toner).
In my Windows Fiery driver, it is found in Expert Color settings under Black Text/Graphics: please Select Rich Black. This should allow all process color to be used to form the entire image, regardless of K only content.
You may choose to turn Off Black Overprint, but it's doubtful this will help. You might try it anyway.

This will not help you with Grayscale selected prints, and returns us to the fuser. Inspect the appearance and age of the fuser and replace accordingly.

Curious... The 700 on our demo floor produces an excellent low-to-medium satiny gloss, but no, it's certainly not the shine of some of the older silicone oil copiers... I will test some files at my earliest opportunity.

-I

[Ianizer]

Re: DC700 Black printing low gloss

yes i agree with you it could be toner problem but if its works fine in other mahicne then ?

and yes it has much less glossy then 240 but previous pritns of 700 has enough gloss then now and customer is comparing with that.

I'm at a bit of a loss as to why a complete xerographics change would produce a desired gloss, but only briefly...
The fuser question bothers me. I'd like it if you were able to set a fresh fuser in, if only to observe any change and rule it out.

I agree, a 240-700 comparison would be unfair. But it seems the customer is making a quite reasonable comparison between previous and new prints from the same machine...

Just a side note-- Not to go down the Is-It-The-Paper rabbithole, but... Is our stock borderline HW, hmm? Could we benefit from a HW setting?

Darn that elimination of Enhanced Gloss mode!

I still think you need to look at the fuser.

-I

[ktxerox]

Re: DC700 Black printing low gloss

Dear Brother,
I am confused here my qousation is when i put new developer, new toner from a good working machine it's print 700 impressoins perfect same previously pritning. if there is problem with fuser than print should be remain same after replacing hte parts.

[4copyprint]

Re: DC700 Black printing low gloss

had you tried tone up black color.as you stated that after 6-700 prints it goes bad in new developer or a developer module from good working machine. if after tone up it becomes ok it means you hv to correct some nvm values otherwise toner is not flowing smoothly in developer so pls check the component responsible for toner flow.

[Ianizer]

Re: DC700 Black printing low gloss

Dear Brother,I am confused here my qousation is when i put new developer, new toner from a good working machine it's print 700 impressoins perfect same previously pritning. if there is problem with fuser than print should be remain same after replacing hte parts.

Okay I admit I'm reaching... Kind of a challenge to keep an image quality issue straight when you can't see samples... Cut me some slack... I must be slow on this one... Kt said something made it click... Duh! Toner control... Has to be.... You throw brand new developer at it and looks good... for a minute... Tone it up and see if the problem improves... Troubleshoot from there.... Btw make sure all the tc values match the number labelled on the sensors... How'm I doing kt? -I

[ktxerox]

Re: DC700 Black printing low gloss

Yes Ian,
This activity has been done all the bar code of TC are matching and tone up procedure has been also tried but no change in print even i manually add toner in black housing .....................

it is really chalanging job for me too becuase working on DC5000 sincle last 4 years but never stuck......

[ktxerox]

Re: DC700 Black printing low gloss

4copyprint,

yes i already tried this one but no progress problem is still existing.

[kalindd]

Re: DC700 Black printing low gloss

I'm jumping a bit late, but try this.
Take another "good working" dev unit from lets say other machine. Put it in your machine ( set TC bar numbers) print only ONE test print, check the gloss level. If its ok ( and from what you have said it should be) check the procon on and off values TAKE a photo to the UI, run the procon on ( check the values, take a photo). Make another print only one, check print if it is sill ok. Then run the 700 sheets, after that check gloss may be it will be lost. Go to service and photo again the values.
( ALL three or 4 pages I don't remember). Even make another procon on and off.
Then start your pc or even print those pictures and analyze them, see what has been changed from the machine . Lets say TC value was changed or Vgrig or Vbias.
PM me your email so I can send you explanation of procon on and off.

And just a shot, did you activated the fuser gloss mode?
Best!

[Ianizer]

Re: DC700 Black printing low gloss

...And just a shot, did you activated the fuser gloss mode?
Best!

(Didn't 700 discontinue Enhanced Gloss mode? Or do you mean a different setting?)

***

Well, my entire post deleted, so let's try again... Dang wifi. Probably too wordy anyway...

I'd like to ask, Kt, as a technician, is it your perception that this is a bona fide equipment problem, or are you shaving hours off your September years over a user expectation issue? Just asking...

Also, have you looked at the Rich Black setting I mentioned, yet?

-I

[kalindd]

Re: DC700 Black printing low gloss

(Didn't 700 discontinue Enhanced Gloss mode? Or do you mean a different setting?
-I

[ktxerox]

Re: DC700 Black printing low gloss

Dear kalindd/ianizer,

First of all thanks for your support and time.

i think we skiped all the discussion on that topic. as i mentioned all other colors are printed ok with no issue only black has this problem and it was also working fine before that fault so means there is no issue with NVM if nvm changed then all other colors should be efected.(am i right ? ) High gloss setting is enabled and version is also 3.0

Dear Kallindd,
i'll try to take pictures as you said and will check the diffrence it can be get us closer that fault.

[ktxerox]

Re: DC700 Black printing low gloss

Dear Ianizer,
i am sending 100% ture qoutes and having this issue since last one week and my coustomer is knocking on daily basis. so don't think like that.i am really thankfull to all of you who included in this issue and helping me to find out salutation.

you are asking about Rich Black setting machien is with free flow and i don't know if there is any setting availabe with this name.

(Didn't 700 discontinue Enhanced Gloss mode? Or do you mean a different setting?)

***

Well, my entire post deleted, so let's try again... Dang wifi. Probably too wordy anyway...

I'd like to ask, Kt, as a technician, is it your perception that this is a bona fide equipment problem, or are you shaving hours off your September years over a user expectation issue? Just asking...

Also, have you looked at the Rich Black setting I mentioned, yet?

-I

[Ianizer]

Re: DC700 Black printing low gloss

Dear Ianizer,
i am sending 100% ture qoutes and having this issue since last one week and my coustomer is knocking on daily basis. so don't think like that.i am really thankfull to all of you who included in this issue and helping me to find out salutation.

you are asking about Rich Black setting machien is with free flow and i don't know if there is any setting availabe with this name.

Not sure I entirely understood your first paragraph... Maybe a small lanquage barrier, aho?
Might you re-word please?

Unless I'm mistaken, Free Flow is just a software option. If Fiery is the color controller, Rich Black should be available.
I don't know that this will fix your problem, but worth ruling out. I mentioned instructions above -- again, in the PS driver, select the Color tab & Expert Settings. You will find Black Text/Graphics & Black Overprint.

By the way, I was able to make samples on our DP700 and the blacks look just fine... I'm at a bit of a loss.
Out of curiosity, have you changed both K toners from another lot?

-I

[kalindd]

Re: DC700 Black printing low gloss

Unless I'm mistaken, Free Flow is just a software option.
-I

Free Flow is DFE Specifications for Xerox 700