Sources for 2" thermal paper ?

[Jeff_Birt]

I find that most thermal paper is specified in mm units. Searching for 50mm thermal paper brings up a lot of results from the medical field. Evidently this is a popular size for EKG machines which means a lot of it has gridlines printed on it. You can find pain white though you may want to message the seller to make sure it does not have gridlines:

https://www.ebay.com/itm/254522625125

I have also found that it is easier to find thermal paper based on the manufacturer of the printer mech. For example Casio was fond of using Seiko mechs so if you can find a cross reference to the Seiko part number you will get a lot more hits.