Real-time print product status
View Patent ↗A web printing press is provided including a printing unit for printing a web, a delivery for printed products formed from the web, the web and printed products defining a printed product stream, a first sensor sensing a first characteristic of the web or printed products, a controller connected to the first sensor, and an indicator indicating in real-time a print defect in the printed product stream as a function of the first sensor. A method is also provided.
1. A web printing press comprising:
a printing unit for printing a web;
a dryer located downstream of the printing unit, the dryer configured and arranged to dry the web;
a folder located downstream of the dryer, the folder configured and arranged to cut the web and to fold the cut web into printed products, the web and printed products defining a printed product stream;
a waste gate located downstream of the folder, the waste gate configured and arranged to discard unacceptable printed products;
a color density sensor located downstream of the printing unit and upstream of the dryer, the color density sensor configured and arranged to sense a color density of the web;
a first light indicator indicating in real-time a print defect in the web as a function of the color density sensor, the light indicator being located downstream of the printing unit, upstream of the dryer, and adjacent the web;
a cutoff sensor located downstream of the folder and upstream of the waste gate, the cut off sensor configured and arranged to sense a cutoff of the printed products;
a second light indicator indicating in real-time a print defect in one the printing products passing the cutoff sensor as a function of the cutoff sensor, the second light indicator being located downstream of the folder, upstream of the waste gate, and adjacent the printed products of the product stream;
a controller connected to the color density sensor and the cutoff sensor;
a graphic user interface separate from the first and second light indicators, the graphic user interface connected to the controller, the graphic user interface configured to graphically display a location in the printed product stream of each print defect indicated by the first and second light indicators.
2. The web printing press as recited in claim 1 further comprising:
a dryer sensor located downstream of the dryer and upstream of the folder, the dryer sensor configured and arranged to sense a dryness of the web;
a third light indicator indicating in real-time a print defect in the web as a function of the dryer sensor, the third light indicator being located downstream of the dryer, upstream of the folder, and adjacent the web;
wherein the graphic user interface is separate from the first, second, and third light indicators, the graphic user interface configured to graphically display a location in the printed product stream of each print defect indicated by the first second and third light indicators.
3. The web printing press as recited in claim 1 wherein the controller automatically controls the printing press as a function of the color density sensor and the cut off sensor.
4. The web printing press as recited in claim 1 , wherein the location of a print defect indicated by the first light indicator is graphically displayed with an image of the first light indicator.
5. The web printing press as recited in claim 4 wherein the location of a print defect indicated by the second light indicator is graphically displayed with an image of the second light indicator.
6. The web printing press as recited in claim 1 wherein the location of a print defect indicated by the first light indicator is graphically displayed with an image of the color density sensor.
7. The web printing press as recited in claim 1 wherein the first light indicators is a light pole having a first light, the first light being controlled as a function of the color density sensor.
8. The web printing press as recited in claim 7 wherein the light pole includes a second light.
9. The web printing press as recited in claim 1 wherein at least one of the first and second light indicators is adapted to provide a visual representation of a tolerance or range of the print defect.
10. The web printing press as recited in claim 1 wherein at least one of the first light indicator and the second light indicator is adapted to output a different color light representing an associated tolerance or range of the print defect.
11. The web printing press as recited in claim 1 wherein the first light indicator is a first light pole, and wherein the second light indicator is a second light pole.