Printing plate and method for detecting a position thereof
AssigneeBobst Bielefeld GmbH
InventorRainer Ochs
Life of this patent
Estimating the term…
Abstract
A printing plate (10) having at least one optical marker (12, 14) for detecting a position of the printing plate (10) is described. The optical marker (12, 14) comprises an optically detectable structure (18) being positioned within a periphery (20) of the marker (12, 14). Furthermore, a method for detecting a position of a printing plate (10) is presented. Additionally, a control unit (38) for a system (36) for detecting a position of a printing plate (10) and a system (36) for detecting a position of a printing plate (10) are explained. Moreover, a computer program comprising computer readable program code means for causing steps of the method is defined.
Claims9
A method for detecting a position of a printing plate, 8. the method comprising:
- providing a printing plate comprising at least one optical marker for detecting a position of the printing plate, wherein the at least one optical marker comprises an optically detectable structure being positioned within a periphery of the at least one optical marker, and wherein the optically detectable structure includes:
- a first structure having a first shape and a first size, and
- a second structure separated from the first structure, having a second shape that is the same as the first shape, having a second size that is different from the first size, and sharing a common center with the first structure,
- capturing an image of the printing plate or at least a portion thereof comprising the at least one optical marker by a camera unit,
- determining a position of the at least one optical marker in the captured image by identifying a structure positioned within the periphery of the at least one optical marker in the captured image, and
- deriving a position of the printing plate from the determined position of the at least one optical marker in the captured image.
A system for detecting a position of a printing plate, the system comprising:
- a control unit for detecting a position of a printing plate, the printing plate including at least one optical marker for detecting a position of the printing plate, wherein the at least one optical marker comprises an optically detectable structure being positioned within a periphery of the at least one optical marker, and wherein the optically detectable structure includes:
- a first structure having a first shape and a first size, and
- a second structure separated from the first structure, having a second shape that is the same as the first shape, having a second size that is different from the first size, and sharing a common center with the first structure,
- wherein the control unit is configured to perform a method including:
- capturing an image of the printing plate or at least a portion thereof comprising the at least one optical marker by a camera unit,
- determining a position of the at least one optical marker in the captured image by identifying a structure positioned within the periphery of the at least one optical marker in the captured image, and
- deriving a position of the printing plate from the determined position of the at least one optical marker in the captured image.
A non-transitory computer-readable medium storing instructions that, when executed by a processor, perform operations including:
- capturing an image of a printing plate or at least a portion thereof comprising the at least one optical marker by a camera unit, the printing plate including at least one optical marker for detecting a position of the printing plate, wherein the at least one optical marker comprises an optically detectable structure being positioned within a periphery of the at least one optical marker, wherein the optically detectable structure includes:
- a first structure having a first shape and a first size, and
- a second structure separated from the first structure, having a second shape that is the same as the first shape, having a second size that is different from the first size, and sharing a common center with the first structure,
- determining a position of the at least one optical marker in the captured image by identifying a structure positioned within the periphery of the at least one optical marker in the captured image, and
- deriving a position of the printing plate from the determined position of the at least one optical marker in the captured image.
Dependencies are inferred from the claim text.