Method and device for influencing the fan-out effect
AssigneeKoenig & Bauer Aktiengesellschaft
InventorsAndreas Ewald Bernard, Peter Krokolinski, Kurt Weschenfelder
Life of this patent
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Abstract
A device is used to influence the fan-on effect of a web in a web-fed rotary printing press. Sensors are used to sense and to monitor a side register control or adjustment of the web. The values provided by the sensor are supplied to the device which controls the fan-out effect.
Claims48
1-86. (canceled)
A method for affecting a fan-out effect on a printed image on a web including:
- providing a web having a web width and having a printed image;
- providing image points of two printed image portions of a color separation of a defined color of said printed image;
- providing a sensor;
- using said sensor for detecting said image points of said printed image over at least one-quarter of said web width;
- providing image data of said defined color from a print pre-stage;
- using said print pre-stage image data as a reference position;
- comparing said image points in respect to their axial positions on said web with said reference position;
- determining a deviation of said image points from said reference position;
- providing an actuating member for affecting said fan-out effect;
- and
- sending an actuating command to said actuating member when said deviation exceeds a print normal value.
A method for affecting a fan-out effect on a printed image on a web including:
- providing an image area on said web;
- sensing a lateral position of said image area on said web;
- providing a nominal position of said lateral portion of said image area on said web;
- comparing said lateral position of said image area with said nominal position;
- determining a distortion of said image area from said comparison;
- providing a lateral registration control and regulation device;
- providing an actuating means for said lateral registration control and regulation device;
- and
- using said actuating means for correcting a lateral registration using said lateral registration control and regulation device in response to said distortion.
A method for affecting a fan-out effect on a printed image on a web including:
- providing a web having a web width and having a printed image;
- providing a first sensor;
- using said first sensor for detecting said printed image over a scanning width of at least one-quarter of said web width and for providing a measured value;
- providing a device for affecting a fan-out effect of said web;
- providing a lateral registration control and regulation device for affecting lateral registration of said web;
- and
- using said measured value from said sensor for operating said device for affecting said fan-out effect and said lateral registration control and regulation device.
A device for affecting a fan-out effect and a lateral registration of a web being printed, said device comprising:
- a fan-out control device;
- an actuating means controlled by said fan-out control device;
- a lateral registration control and regulation device;
- and
- an image sensor assembly adapted to sense a printed image over a scanning width of at least a quarter of a web width of the web, said image sensor assembly being usable to supply data to both said fan-out control device and to said lateral registration control and regulation device.
Dependencies are inferred from the claim text.