Graphtec FC9000 guessing registration marks

[gpslitt]

I am new to printing profile and new to graphtec too..

At first instance, I gave a repeat job command to cut from a different file by mistake, Cutter just sensed the first registration mark, as on all cut files, then didn't find the other three marks, still go ahead and cut the sheet according to the previous file cut.

Today I gave a command with Type 2 registration marks and cutter didnt find the fourth mark, still guesses and go ahead with cutting, skewing one corner an inch inside on both x and y axis.

Is there a feature on graphtec where the cutter just go ahead with just one mark and guesses all others, I can turn off.

thnx in advance for input

 

[Goatshaver]

What program are you cutting with? Cut Master 4, 5 or something else?

 

[dypinc]

That would be a good one to post video evidence.

 

[JBurton]

On my fc-8600, if it doesn't read one of the marks and asks to retry, half the time it will start cutting by itself, the other half it will re read and cut properly. I've grown accustumed to just cycle power if it misses and re run it, especially if it messed up on the 10th 8' panel. The 9000 may be totally different though...

 

[gpslitt]

What program are you cutting with? Cut Master 4, 5 or something else?

I am cutting with CM5

 

[gpslitt]

That would be a good one to post video evidence.

That would be a good one to post video evidence.

Attaching photo of what happened

 

[gpslitt]

On my fc-8600, if it doesn't read one of the marks and asks to retry, half the time it will start cutting by itself, the other half it will re read and cut properly. I've grown accustumed to just cycle power if it misses and re run it, especially if it messed up on the 10th 8' panel. The 9000 may be totally different though...

There must be some setting to stop cutting if it doesn't detect all four marks like mimaki

 

[ikarasu]

Did you watch it happen? Or are you assuming it just read 2 marks and started to cut?

If it doesn't detect all 4 marks... it wont cut. Keep in mind it's an optical sensor, not a Camera.... So it'll try to read a mark, and if something is where the mark should be... it fools itself into thinking thats a mark. So if theres a decal right there... it'll read the decal, think it's the mark and proceed to cut.

I'd put that sheet back into the graphtec...send the same wrong file and watch it. My bet is it reads 1 mark, goes to the second... It'll search within 3-4" of the second mark all around (going back and fourth) until it finds something that resembles a mark, or doesn't find something and throw an error. asking you where it is.


You could turn the scan sensor to be less sensitive... It'll make it only read black marks and doesn't pick up non marks as easy... BUT you're giving yourself way more of a headache as you'll have to manually intervene more often, much easier to not accidently send something twice. Or always use barcodes so the graphtec reads the barcodes and pulls the file without you having to send it.

 

[gpslitt]

Did you watch it happen? Or are you assuming it just read 2 marks and started to cut?

If it doesn't detect all 4 marks... it wont cut. Keep in mind it's an optical sensor, not a Camera.... So it'll try to read a mark, and if something is where the mark should be... it fools itself into thinking thats a mark. So if theres a decal right there... it'll read the decal, think it's the mark and proceed to cut.

I'd put that sheet back into the graphtec...send the same wrong file and watch it. My bet is it reads 1 mark, goes to the second... It'll search within 3-4" of the second mark all around (going back and fourth) until it finds something that resembles a mark, or doesn't find something and throw an error. asking you where it is.


You could turn the scan sensor to be less sensitive... It'll make it only read black marks and doesn't pick up non marks as easy... BUT you're giving yourself way more of a headache as you'll have to manually intervene more often, much easier to not accidently send something twice. Or always use barcodes so the graphtec reads the barcodes and pulls the file without you having to send it.

Yes I watched it happened and stop in between.

So basically you are right, as the print is not exactly straight..it assumed the edges of my print as mark..but it doesn't even look like a mark or same color. Yes it goes 4-5" both directions just to get something, which is pretty strange.

It's already a headache as the print is not straight and it missed every second or third time..I am lucky if it cuts all five sheets together.

I am.printing very tight to edges so I am at lowest mark size..thinking of increasing it to recommended, might helps.

 

[JBurton]

I am.printing very tight to edges so I am at lowest mark size..thinking of increasing it to recommended, might helps.

This is a recipe for headaches. If you can, increase the width of the roll you're using or find a way to divide the work to avoid such tight tolerances. My rule of thumb, 52" wide print including reg marks, max, for a 54" roll. This is somewhere around 51" wide graphics, and I'd sooner shrink their sign (if possible) than fight that tolerance.
One thing that always seems to help with my marks, converting them from rich black to only black. It tends to give a sharper edge, but I am running at 20 passes/inch, so your mileage may vary.