Method and device for controlling and regulating a dryer located downstream of a varnishing unit in a rotary printing press
AssigneeHeidelberger Druckmaschinen AG
InventorsMartin Buschmann, Sharam Hauck
Life of this patent
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Abstract
A method for controlling and regulating a dryer in a rotary printing press having a varnishing device for varnishing printing stock processed in the printing press, includes measuring the intensity of a microwave signal after the microwave signal has interacted with varnished and dried printing stock fed through the rotary printing press; from the measured radiation intensity of the microwave signal, forming a status variable representing a measure of the degree of drying of the printing stock; and varying drying power provided by the dryer as a function of the formed status variable; and a device for performing the method.
Claims15
A method for controlling and regulating a dryer in a rotary printing press having a varnishing device for varnishing printing stock processed in the printing press, which comprises measuring the intensity of a microwave signal after the microwave signal has interacted with varnished and dried printing stock fed through the rotary printing press;
- from the measured radiation intensity of the microwave signal, forming a status variable representing a measure of the degree of drying of the printing stock;
- and varying drying power provided by the dryer as a function of the formed status variable.
A device for controlling a dryer in a rotary printing press having a varnishing unit, comprising a microwave transmitter located downstream from the dryer for emitting microwave radiation in a direction towards a surface of a varnished printing stock transported through the printing press;
- a microwave receiver associated with said microwave transmitter for detecting said radiation emitted by said microwave transmitter after said radiation has interacted with the printing stock and for generating corresponding electronic signals, and an electronic control and evaluation device for generating a status variable representing a measure of the degree of drying of the varnish on the printing stock from said electronic signals of said microwave receiver.
Dependencies are inferred from the claim text.