Xerox 700 fuser temperature

[jotterpinky]

We do use the 74-043 NVM value to print more solid blacks when printing only black and white and to reduce mottle. Depending on the stock though, for instance a 12pt C2S sheet with a "reflex blue" color it makes the mottle worse.

to kalindd: I appreciate your post and it looks like these are kind of what i'm looking for, however when entering the "maintenance" menu and the "nvm read/write" option it won't allow me to change those NVM values you gave...gives an error something to the effect "the selected NVM cannot be read at the moment". Am I doing something wrong? It works fine for the 74-043 setting still.

In addition to this what do you mean regarding the "latch" and "half-latch" etc, position of the fuser. Does the machine actually increase pressure inside the fuser, from reading other posts it sounds as though a "half-latch fuser" is a physically different fuser than the regular ones.

As for the change to the image transfer settings changed by the tech I'll mention this to him next time he comes by. Thanks again.

[kalindd]

The NVMs that I've provided to you can't be changed from admin mode, you can change them ONLY from service mode. Ask your tech or try it by your self (it won't hurt).
Hold "0" five secs and then while holding it press "start" you will be asked for pass. enter "6789" then go to machine status and tools, scroll down to maintenance, select NVMrw. You can now access those nvm's.
Unless your IOT sofware version is lower then 54.40. if it is lower you need to upgrade it.

"half-latch fuser" is different in one way from the old type fuser so called "full latch".
Fuji added one way clutch to the pressure mechanism inside the fuser. So now they can control the cam position inside the fuser more precisely, by this machine can change the pressure according to paper you use. This is why you have non fused prints on heavy weights, the factory nvms are for Xerox paper or something else that can happen is, if your tech has done NVM initialization, this can "erase" the proper nvms.
The hardware change was done 2 years ago . So I don't think that there are some of the old type left in stock. But about 8 months ago they find a problem in the design, and again they improved it by adding a larger "shin" into the fuser.
Anyway change the NVMs and your problem will be solved.
I had the same problems like yours with three 700DCP and those nvm's were provide from fuji for "non fusing issiues".
But keep in mind the you may have defective fuser. So it worth a shot to try t with diffirent.
Good luck.
(English is not my native so I hope I'm doing fine)

[jotterpinky]

kalindad,

this worked perfectly. I lowered it by 3 and it fused beautifully, the print seems a tad bit darker but is easily adjusted in the RIP. Another side-note to this is that apparently the higher nip pressure also minimizes the gloss differential we had on this particular fuser at the 12" width, something that we keep a second fuser around for larger stocks since it has wear lines from the different paper sizes. I'm sure it's temporary until you put new wear lines in at the higher pressure but in a pinch it might work.

Do you recommend we change it back to the default for the majority of work or just on that stubborn stock? I can see some other uses for it, one which we just ran on a linen type paper that we were having trouble getting to fuse good in the "grooves" of the paper, the higher pressure fused it fine and gave a better image.

So from my understanding this only changes the nip pressure, not the fuser temp?

[kalindd]

No don't change it.
Yes you are right it only changes the nip.
Like I wrote in my first post:
Larger value means lower nip pressure（fix level down/Side Gloss less）.
Smaller value means higher nip pressure（fix level up/Side Gloss worse）

If you set it to 10 (Non half latch) for this linen type of paper, I think you will get even better results. But after the linen paper set it again to the old value. Give it a try.