A method for ceramizing green glass in the form of a continuous green glass ribbon or of individual green glass sheets, wherein - the green glass is conveyed directly on rollers, at least during volume crystallization; - the entire ceramization process of at least one portion of the green glass located in a furnace takes between 0.5 and 4 hours, wherein the at least one portion is exposed to a maximum temperature between 750 and 1250 °C for 5 to 60 minutes during the volume crystallization; - the volume crystallization is carried out in a temperature range between 750 and 1250 °C, and the temperature of the upper and lower faces of the at least one ceramizing portion of the green glass is continuously measured and heating is controlled using this information and based on target values, by a measuring and control device; - just before and at least at the beginning of volume crystallization, the at least one portion is advanced on the rollers at an advance rate ranging between 0.2 and 10 m/min; - just before and at least at the beginning of volume crystallization, the viscosity of the at least one portion of the green glass is at least temporarily between 10 7 and 10 11 dPa·s; - the temperature and/or the advance rate is controlled such that the following applies with respect to the distance x roller of the roller axes: x roller 5 ≤ 360 * R a * t sheet 2 / ρ * g * v advance * η, wherein R a is the maximum waviness, t sheet is the glass thickness, ρ is the glass density, g is the acceleration due to gravity, v advance is the advance rate and η is the minimum viscosity of the glass during ceramization on the rollers; and - wherein the temperature is controlled so that the temperature T y in the furnace over a width of the green glass to be ceramized does not deviate by more than -5 °C to +5 °C from a predefined target temperature T x, that a temperature difference between the upper and lower faces of the green glass to be ceramized in the furnace ranges between -0.5 °C and +1 °C, and so that a measuring and control device is responsive to changed conditions within ten seconds. - the green glass is conveyed directly on rollers, at least during volume crystallization; - the entire ceramization process of at least one portion of the green glass located in a furnace takes between 0.5 and 4 hours, wherein the at least one portion is exposed to a maximum temperature between 750 and 1250 °C for 5 to 60 minutes during the volume crystallization; - the volume crystallization is carried out in a temperature range between 750 and 1250 °C, and the temperature of the upper and lower faces of the at least one ceramizing portion of the green glass is continuously measured and heating is controlled using this information and based on target values, by a measuring and control device; - just before and at least at the beginning of volume crystallization, the at least one portion is advanced on the rollers at an advance rate ranging between 0.2 and 10 m/min; - just before and at least at the beginning of volume crystallization, the viscosity of the at least one portion of the green glass is at least temporarily between 10 7 and 10 11 dPa·s; - the temperature and/or the advance rate is controlled such that the following applies with respect to the distance x roller of the roller axes: x roller 5 ≤ 360 * R a * t sheet 2 / ρ * g * v advance * η, wherein R a is the maximum waviness, t sheet is the glass thickness, ρ is the glass density, g is the acceleration due to gravity, v advance is the advance rate and η is the minimum viscosity of the glass during ceramization on the rollers; and - wherein the temperature is controlled so that the temperature T y in the furnace over a width of the green glass to be ceramized does not deviate by more than -5 °C to +5 °C from a predefined target temperature T x, that a temperature difference between the upper and lower faces of the green glass to be ceramized in the furnace ranges between -0.5 °C and +1 °C, and so that a measuring and control device is responsive to changed conditions within ten seconds.