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US 5,349,200 AGranted
Method and apparatus for the alignment of paper stacks in a printing press
AssigneeHeidelberger Drukmaschinen AG
InventorsHelmut Buck, Ludwig Bergann
Life of this patent
Estimating the term…
Abstract
A method and apparatus for the alignment of paper stacks in a printing press provides essentially uninterupted printing through the transfer of supply of sheets of paper from a first stack of papers to a second stack of papers by reducing mechanical strain in the control and operation of the sheet feeder of the printing press.
Claims21
A method, for measuring the distance of objects and for relatively positioning at least one of the objects, said method comprising the steps of:
- directing a first beam of electromagnetic radiation onto a first object, and directing a second beam of electromagnetic radiation onto at least one additional object;
- reflecting the first beam of electromagnetic radiation off of the first object, and reflecting the second beam of electromagnetic radiation off of the at least one additional object;
- detecting each of the reflected first and second beams of electromagnetic radiation with single detector means, said detector means comprising a position sensitive receiver for detecting beams of electromagnetic radiation;
- generating a signal with said detector means for each of the reflected first beam of electromagnetic radiation and the reflected second beam of electromagnetic radiation, said signal for each of the reflected first and second beams of electromagnetic radiation corresponds to both:
- the distance of the first and the at least one additional object from said detector means, and the relative position of each of the first object and the at least one additional object;
- and said method further comprises the step of:
- positioning at least one of the first object and the at least one additional object in response to said signal to relatively position the at least one of the first object and the at least one additional object with respect to the other of the first object and the at least one additional object.
4 more elements
Apparatus for positioning at least two objects with respect to one another, said apparatus comprising:
- means for irradiating each of the at least two objects with a light beam, the light beam for irradiating each of the at least two objects being reflected off of each of the at least two objects;
- single detector means for detecting reflected light beam from each of the at least two objects, said detector means comprising a position sensitive receiver arrangement for detecting each of the reflected light beams;
- means for directing each of the reflected light beams from each of the at least two objects onto said single detector means;
- said single detector means comprising means for generating a signal, said signal being for corresponding to the relative position of each of the at least two objects from the detector means;
- and means for positioning at least one of the at least two objects in response to said generated signal to position the at least one of the at least two objects with respect to the other of the at least two objects.
2 more elements
A method for positioning at least two objects with respect to one another, said method comprising the steps of:
- directing a first light beam onto a first object, and directing a second light beam onto at least one additional object;
- reflecting said first light beam off of the first object, and reflecting the second light beam off of the at least one additional object;
- directing said reflected light beams from each of the first object and the at least one additional object onto a single detector means, said detector means comprising a position sensitive receiver for detecting a position of each of said reflected light beams thereon;
- detecting the position of each of said reflected light beams with said detector means;
- generating a signal with said detector means, said signal corresponding to the relative position of each of said reflected light beams on said detector means and also corresponding to the relative position of the first object and the at least one additional object with respect to said detector means;
- and
- moving at least one of the first object and the at least one additional object in response to said signal to align the positions of each of said reflected light beams on said detector means to thereby relatively position the object and the at least one additional object.
4 more elements
Dependencies are inferred from the claim text.