Glass plate production method

Abstract

A glass plate (a glass plate for cover glasses) with a low concentration of impurities is produced using article cullet. A process of melting glass raw materials and cullet and producing therefrom a glass plate is repeated. The glass plate is further processed into a glass article. The glass article is a cover glass for displays, including the glass plate and a coating provided on a surface of the glass plate. The cullet used includes glass plate cullet that is cullet of the glass plate and article cullet that is cullet of the article cullet. At least one of the mixing ratio of the glass raw material, the mixing ratio of the glass plate cullet, the mixing ratio of the article cullet, the impurity concentration in the glass plate cullet and the impurity concentration in the article cullet is adjusted in accordance with at least one of the impurity concentration in the glass plate cullet and the impurity concentration in the article cullet.

Dependencies are inferred from the claim text.