Overcoat Issues

[Chicken Quasar]

Hey everyone,
I’m running into an issue with my HP Latex 630 where the overcoat seems to be applied no matter what I do.

• I’ve tested the same print file with and without the overcoat profile and still getting some level of overcoat.
• I also tried enabling “Optimize for Lamination” (which should remove overcoat I think), but I’m still seeing it being applied.
• No matter how I configure it, the printer seems to insist on using some overcoat.

Has anyone else run into this?
Am I misunderstanding how Overcoat works?

Any suggestions would be greatly appreciated!

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Do you want me to make it more technical (with mentions of RIP software, firmware version, media profile settings, etc.) so other techs can give you deeper troubleshooting advice, or keep it general for a broader audience?

 

[balstestrat]

It will always end up using some by cleaning the printhead. You can't get it to zero.

 

[Chicken Quasar]

It will always end up using some by cleaning the printhead. You can't get it to zero.

I do understand this. It's hard to know if thats going into the waste bin or onto our material. do you have your rip software manage the dismissal of overcoat or do you have a profile on your printer for that?

 

[balstestrat]

If you want to be sure always use a dedicated profile.

Your usage is 1% of total ink use when disabled.
If you enabled overcoat the usage is 10% or more. It's very easy to compare if you must.

I think in your screenshot it's actually disabled on both prints.

Print something with generic and you will notice the increase.

Also in your RIP screenshot you are showing the ICC profile drop down menu which will NOT change overcoat. You have to change the media and printmode.

 

[Chicken Quasar]

If you want to be sure always use a dedicated profile.

Your usage is 1% of total ink use when disabled.
If you enabled overcoat the usage is 10% or more. It's very easy to compare if you must.

I think in your screenshot it's actually disabled on both prints.

Print something with generic and you will notice the increase.

Also in your RIP screenshot you are showing the ICC profile drop down menu which will NOT change overcoat. You have to change the media and printmode.

This has been very helpful. We came from a Latex 110 where overcoat was not a thing so this workflow is new to us.

We have made custom profiles on the printer side of things in our substrate library where we deleted overcoat from the profile and we are also selecting optimize for lamination on the rip software side of things.