High quality papers are coated with clay or other material. Perhaps some of these coatings are prone to releasing or otherwise incompatible with toner? https:/

High quality papers are coated with clay or other material. Perhaps some of these coatings are prone to releasing or otherwise incompatible with toner? https://en.m.wikipedia.org/wiki/Coated_paper https://en.m.wikipedia.org/wiki/Coated_paper