Versant 280 Registration

[NorwoodPress]

We have recently purchased a brand new Versant 280, here in the UK.

On a job today I noticed that despite setting up a profile for the SRA3 uncoated 350gsm stock for alignment from tray 6, I could see that the artwork was shifting up and down and not staying in the same position.

Now I did find in the admin settings there was register paper feeding tray and after doing that it looks to improved it, but there is still the odd one slightly moving.

Is there anything else I can try doing? Is this something normal and in tolerance with the Versant 280?

The job is double sided duplex, colour one side and grayscale the other.

The first 2 photos show what it was like before and the other 2 show after trying the register paper feeding tray setting.

 

[pippip]

Do you know if the 350gsm is long grain or short grain? At that weight it might just be the difference.
We have a V80 and although it's not supposed to I regularly duplex 350gsm SG (Prodesign, Mondi, DCP) and it would be pretty bang on.

 

[TJPrinter]

I found that a few paper mills aren’t that great at sheeting and if your sheets are not all the same length you’ll see problems with front to back registration. If that’s the case you’ll need to back trim your stock to make them consistent.

When you run your registration alignment run more than one sheet and scan something like 3 or 4 sheets instead of just 1. The sheets should be averaged when registration is calculated. I never do this unless the sheets can be fed through the document feeder because it’s too time consuming on the glass but maybe worth the time to give it a try.

You could try adjusting the Regi-Loop in your custom paper setting, do this in small adjustments to see if registration improves. A higher number will give more pressure to register the sheet and a lower number will give less pressure. If you’ve ever run a offset press this would be similar to increasing the buckle.

 

[adriansto]

I found that a few paper mills aren’t that great at sheeting and if your sheets are not all the same length you’ll see problems with front to back registration. If that’s the case you’ll need to back trim your stock to make them consistent.

When you run your registration alignment run more than one sheet and scan something like 3 or 4 sheets instead of just 1. The sheets should be averaged when registration is calculated. I never do this unless the sheets can be fed through the document feeder because it’s too time consuming on the glass but maybe worth the time to give it a try.

You could try adjusting the Regi-Loop in your custom paper setting, do this in small adjustments to see if registration improves. A higher number will give more pressure to register the sheet and a lower number will give less pressure. If you’ve ever run a offset press this would be similar to increasing the buckle.

There is a whole suite of procedures for registration in service mode. All these procedures must be performed in a certain order to obtain the best results. Place a call to xerox tech or purchase service manual and do it yourself.

 

[TJPrinter]

There is a whole suite of procedures for registration in service mode. All these procedures must be performed in a certain order to obtain the best results. Place a call to xerox tech or purchase service manual and do it yourself.

If this is a new install then ALL those procedures should have been performed prior to the technicians leaving. There is a reason the user has the option to perform the tray alignment, paper tray alignment and regi-loop adjustments. I get what you’re saying but it’s not always necessary or feasible to call a tech and sometimes people post on this forum after they have already exhausted all the options that the “trained Xerox tech” performed. FYI my “trained Xerox tech” never used or heard of the paper tray alignment.

 

[DYP]

If this is a new install then ALL those procedures should have been performed prior to the technicians leaving. There is a reason the user has the option to perform the tray alignment, paper tray alignment and regi-loop adjustments. I get what you’re saying but it’s not always necessary or feasible to call a tech and sometimes people post on this forum after they have already exhausted all the options that the “trained Xerox tech” performed. FYI my “trained Xerox tech” never used or heard of the paper tray alignment.

And the standard tray alignments in service mode are based and required to use standard 11 x 17 sheets. Because of this I would never let a tech touch the alignment when I was running this level; of printer. I would make the changes myself or tell the tech what values to put in if he was here. If you know what changes need to be made when in service mode alignment change the tray to 11 x 17 paper and GSM and make the changes other wise you can make the changes in the NVM settings. Alignment for inboard outboard are per tray. Lead edge to trail edge is per paper weight and affects all trays.

 

[kslight]

I found that a few paper mills aren’t that great at sheeting and if your sheets are not all the same length you’ll see problems with front to back registration. If that’s the case you’ll need to back trim your stock to make them consistent.

When you run your registration alignment run more than one sheet and scan something like 3 or 4 sheets instead of just 1. The sheets should be averaged when registration is calculated. I never do this unless the sheets can be fed through the document feeder because it’s too time consuming on the glass but maybe worth the time to give it a try.

You could try adjusting the Regi-Loop in your custom paper setting, do this in small adjustments to see if registration improves. A higher number will give more pressure to register the sheet and a lower number will give less pressure. If you’ve ever run a offset press this would be similar to increasing the buckle.

Yeah this is a good tip for heavy uncoated stocks - they aren’t perfect. Finch 130# uncoated cover is bad - every other sheet varies quite significantly. I use a lot of it on tight registering cards so i back trim 19x13 to 18.8x12.8.

 

[NorwoodPress]

Do you know if the 350gsm is long grain or short grain? At that weight it might just be the difference.
We have a V80 and although it's not supposed to I regularly duplex 350gsm SG (Prodesign, Mondi, DCP) and it would be pretty bang on.

It was originally long grain in SRA2 called Horizon and then I cut it in half to SRA3. I have ordered some digital Coral SRA3 so I can see if there is an improvement.

 

[NorwoodPress]

I found that a few paper mills aren’t that great at sheeting and if your sheets are not all the same length you’ll see problems with front to back registration. If that’s the case you’ll need to back trim your stock to make them consistent.

When you run your registration alignment run more than one sheet and scan something like 3 or 4 sheets instead of just 1. The sheets should be averaged when registration is calculated. I never do this unless the sheets can be fed through the document feeder because it’s too time consuming on the glass but maybe worth the time to give it a try.

You could try adjusting the Regi-Loop in your custom paper setting, do this in small adjustments to see if registration improves. A higher number will give more pressure to register the sheet and a lower number will give less pressure. If you’ve ever run an offset press this would be similar to increasing the buckle.

I shall give them recommendations a go. Thanks