Optimized-intensity control mark measurement and apparatus for performing the measurement
AssigneeHeidelberger Druckmaschinen AG
InventorsMichael Kaiser, Frank Schumann
Life of this patent
Estimating the term…
Abstract
An apparatus and a method for evaluating control marks on printing materials by an optical sensor connected to a computer, which interprets overshooting of a predefined intensity threshold as it registers the printing material being a line of a printed control mark. The apparatus is distinguished by the fact that the control mark is registered by a color measuring instrument and that the intensity threshold of the optical sensor is calculated by the computer in dependence on the measured color value registered by the color measuring instrument.
Claims14
A method for evaluating control marks on printing materials, which comprises the steps of:
- interpreting, via an optical sensor connected to a computer, overshooting of a predefined intensity threshold as the computer registers a printing material being a line of a printed control mark;
- registering the printed control mark via a color measuring instrument;
- and
- calculating an intensity threshold of the optical sensor via the computer in dependence on a measured color value registered by the color measuring instrument.
An apparatus for evaluating control marks on printing materials, the apparatus comprising:
- a computer;
- an optical sensor connected to said computer for interpreting overshooting of a predefined intensity threshold during registration of a printing material as a line of a printed control mark;
- a color measuring instrument;
- and
- the apparatus being set up such that the printed control mark is registered by means of said color measuring instrument, and in that the predefined intensity threshold of said optical sensor is calculated by said computer in dependence on a measured color value registered by said color measuring instrument.
A press, comprising:
- an apparatus for evaluating control marks on printing materials, said apparatus comprising:
- a computer;
- an optical sensor connected to said computer for interpreting overshooting of a predefined intensity threshold during registration of a printing material being a line of a printed control mark;
- a color measuring instrument;
- and
- said apparatus being set up such that the printed control mark is registered by means of said color measuring instrument, and in that the predefined intensity threshold of said optical sensor is calculated by said computer in dependence on a measured color value registered by said color measuring instrument.
Dependencies are inferred from the claim text.