Method and apparatus for visually inspecting a substrate on a printing press
First Claim
Patent Images
1. A method of visually inspecting a substrate of a printing press, the method comprising:
- providing an image recording device including a monochromatic sensor configured to record images printed on a white substrate, the images including yellow ink; and
illuminating the substrate with white light and blue light;
wherein illuminating the white substrate with blue light highlights the yellow ink against the white substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates generally to the field of printing presses, and specifically to a method and apparatus for visually inspecting a web moving on a printing press using a CMOS based image recording device and preferably a LED light source. The LED light source includes at least two colors of light, such as white and blue, for highlighting various ink colors with respect to the web.
40 Citations
33 Claims
-
1. A method of visually inspecting a substrate of a printing press, the method comprising:
-
providing an image recording device including a monochromatic sensor configured to record images printed on a white substrate, the images including yellow ink; and
illuminating the substrate with white light and blue light;
wherein illuminating the white substrate with blue light highlights the yellow ink against the white substrate. - View Dependent Claims (2, 3)
-
-
4. A method of visually inspecting a substrate of a printing press, the method comprising:
-
providing an image recording device including a monochromatic sensor configured to record images printed on a substrate; and
illuminating the substrate with light of varying colors to identify different ink colored portions of the images printed with respect to the substrate. - View Dependent Claims (5, 6)
-
-
7. A visual inspection system configured to be in optical communication with a substrate of a printing press, said visual inspection system comprising:
-
a monochromatic image recording device configured to record images printed by a printing press onto a white substrate, the printed images including yellow ink;
a plurality of LEDs adjacent the recording device and positioned to illuminate the white substrate;
wherein a portion of the LEDs are white, and a portion of the LEDs are blue, and wherein illuminating the white substrate with the blue LEDs highlights the yellow ink against the white substrate. - View Dependent Claims (8, 9)
-
-
10. A visual inspection system configured to be in optical communication with a substrate of a printing press, said visual inspection system comprising:
-
a CMOS image recording device configured to record images printed on a substrate; and
a plurality of high intensity LEDs adjacent the recording device and positioned to illuminate the substrate;
wherein a portion of the LEDs are white, and a portion of the LEDs are a color other than white. - View Dependent Claims (11, 12, 13)
-
-
14. A visual inspection system configured to be in optical communications with the substrate of a printing press, said visual inspection system comprising:
-
a monochromatic image recording device configured to record images on a substrate;
a plurality of LEDs of at least two different colors arranged adjacent the recording device; and
a control system coupled to the recording device, wherein the control system uses the recorded image to control operation of the printing press. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A visual inspection system configured to be in optical communication with a substrate of a printing press, said visual inspection system comprising:
-
a monochromatic image recording device configured to record images printed by a printing press onto a substrate, the printed images including inks of various colors; and
illuminators of at least two different colors adjacent the recording device and chosen to help highlight the various ink colors with respect to the substrate. - View Dependent Claims (26, 27, 28, 29)
-
-
30. An illumination arrangement for a monochromatic image recording device on a printing press, said illumination arrangement adapted to illuminate a substrate of the printing press and comprising:
a plurality of LEDs arranged in a configuration surrounding the monochromatic recording device, the plurality of LEDs including LEDs that emit light of different colors to identify and highlight different ink colored portions of a printed image with respect to a substrate. - View Dependent Claims (31, 32, 33)
Specification