Xcalibur 45 problem

[ceconet]

Hello good people in the forum,

lately i've been having this problem:

pic1.jpg pic2.jpg

Started about a month ago but it was once or twice every 100-200 plates. But at this point is every plate after the first after boot.
It shows no indications that there is a problem. Every test i've run is in the norms (or atleast doesnt show any obvious problems).

I'll be gratefull for any help or advice to help fix this.

[ansoft]

Afaik the Agfa Xcalibur uses GLV head. The banding can be caused by improper head settings (you need an experienced AGFA engineer), dirty optics (clean it) or something else malfunctioning. The problem with these lines in the right side of the plate, you may check the data cable between the RIP and machine, or the data cable inside the machine. Moreover you may check the power supply of the laser head. Why don't you call Agfa service? Isn't it faster and easier, than writing in a forum for such strong problem?
Just thinking!

Good Luck!

Ansoft

[ceconet]

Hello, thanks for the reply,

we have checked all the cables but we still have the problem. The banding is only when the plate is exposed incorectly (exposure starts not at the plate edge but somewhere after(pic1 for reference)).
We bought this machine second hand and we have no contract with Agfa. In our country there is no one specialising in Agfa machines.

So any advices will be helpfull.

[ansoft]

Where are you from?

[VladCanada]

He is from Bulgaria, ansoft. Be smart - use GOOGLE!

[ansoft]

ops, I know!

[Armya Inc]

Hello good people in the forum,

lately i've been having this problem:

pic1.jpg pic2.jpg

Started about a month ago but it was once or twice every 100-200 plates. But at this point is every plate after the first after boot.
It shows no indications that there is a problem. Every test i've run is in the norms (or atleast doesnt show any obvious problems).

I'll be gratefull for any help or advice to help fix this.

There is no banding on the plates. I do not see any banding in the picture. Where the idea of banding came from?

This is an Edge detect issue and not the banding. The Faulty AFIM (Autofocus Illumination Module)or noisy Machine power supply(Not the Laser Power supply) can cause this. Run the Xcalibur45 Edge Detect Stability script on unidiag . It will show you an unstable edge detect position( different calculated and original plate size) as attached file. The values on your machine might be different for different plate sizes compared to the sample picture. This for such an intermittent problem is where you have no problem with line voltage or the power supply.

Hope this will help!

[ceconet]

Hello,

thanks for the responses.

We did a lot of calllibration and checking on all of the components.

At this point things are somewhat ok, but it still does it at about 50+- plates.

We recallibrated the AFIM and did a Xcalibur45 Edge Detect Stability test and we got all possitive results.

Is there a chance something else is causing this?

[Armya Inc]

Hello,

thanks for the responses.

We did a lot of calllibration and checking on all of the components.

At this point things are somewhat ok, but it still does it at about 50+- plates.

We recallibrated the AFIM and did a Xcalibur45 Edge Detect Stability test and we got all possitive results.

Is there a chance something else is causing this?

Did you replace the Power Supply?Can you send me a picture of the S-Curve to be taken from Gnu Plot?

[Armya Inc]

The S-curve you sent me was smooth and OK. This shows a stable AFIM. I would like you to check the S-curve graph when the edge detect problem (The one on your picture) can be seen on the plate. The curve will be fuzzy and not smooth any more. I understand this is an intermittent(not permanent) problem and hard to detect on the Gnu Plot. I suggest to change the power supply and make sure the input line voltage is stable and use proper stabilizer. Open the attached file for the power supply's picture. Hoping this will answer your question in PM.