White marks on mugs

[leehilton90]

I am having this issue on almost every mug in different places mostly along the bottom. I am unsure if this is the mugs or the machine. If it was the machine I would have thought it would be in the same place every time?[ATTACH=CONFIG]6718[/ATTACH]
[ATTACH=CONFIG]6719[/ATTACH]

[Justin]

Are the marks visible prior to printing?

[Mrteajunkie]

It looks to me like a chip in the coating And it hasn’t taken the sublimation.
that’s why the mugs still white and the dark patch on the paper.

I have had this after the mugs were thrown around in transit.

[leehilton90]

I am not sure if it is visible, not without close inspection anyway. This has been a lot over the space of different boxes and deliveries.

[Mrteajunkie]

Are all the mugs from he same supplier?

[webtrekker]

Seems obvious to me that the deep pink/red mark on your print exactly coincides with the white problem area on the mug.

What printer, inks and paper are you using? What press?

[Justin]

Seems obvious to me that the deep pink/red mark on your print exactly coincides with the white problem area on the mug.

I assumed this was the transfer after printing?

[webtrekker]

I assumed this was the transfer after printing?

Ah yes, you're probably right Justin. I just wish posters would give more information to help solve their problems.

[Mrteajunkie]

Surely it would be noticeable on the print before pressing if it was the printer or media?

[webtrekker]

I am having this issue on almost every mug in different places mostly along the bottom. I am unsure if this is the mugs or the machine. If it was the machine I would have thought it would be in the same place every time?[ATTACH=CONFIG]6718[/ATTACH]
[ATTACH=CONFIG]6719[/ATTACH]

Ok, please answer this: Was that second image (of the paper print) taken BEFORE or AFTER pressing? Thank you.