Multi-beam scanning apparatus
AssigneeHeidelberger Druckmaschinen AG
InventorsJörg-Achim Fischer, Thomas Jacobsen
Life of this patent
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Abstract
A multi-beam scanning apparatus is provided for use with a recording medium that is located on an at least partially cylindrical inner bearing face of a recording device, in which the bearing face has a cylinder axis. The scanning apparatus includes a scanner unit for scanning the recording medium with at least one exposure beam. The scanner unit includes an acousto-optical element that is either an acousto-optical deflector or an acousto-optical modulator. The scanner unit includes a deflection element that is axially displaceable and rotatable relative to the cylinder axis of the bearing face. The acousto-optical element is mounted to rotate together with the deflection element about the cylinder axis.
Claims22
A multi-beam scanning apparatus for use with a recording medium located on an at least partially cylindrical inner bearing face of a recording device, in which the bearing face has a cylinder axis, the scanning apparatus, comprising:
- a scanner unit for scanning the recording medium with at least one exposure beam;
- said scanner unit including an acousto-optical element selected from the group consisting of an acousto-optical deflector and an acousto-optical modulator;
- said scanner unit including a deflection element that is axially displaceable and rotatable relative to the cylinder axis of the bearing face;
- and
- said acousto-optical element being mounted to rotate together with said deflection element about the cylinder axis.
An internal-drum laser exposure device, comprising:
- a recording device having an at least partially cylindrical inner bearing face for a recording medium, the bearing face having a cylinder axis;
- and
- a multi-beam scanning apparatus including:
- a scanner unit for scanning the recording medium with at least one exposure beam,
- said scanner unit including an acousto-optical element selected from the group consisting of an acousto-optical deflector and an acousto-optical modulator,
- said scanner unit including a deflection element that is axially displaceable and rotatable relative to the cylinder axis of the bearing face, and
- said acousto-optical element being mounted to rotate together with said deflection element about the cylinder axis.
Dependencies are inferred from the claim text.