Using ink temperature gain to identify causes of web breaks in a printing system
First Claim
1. A device for determining conditions under which a break in a web of a printing system having a multiplicity of ink fountains is more likely to occur, comprising:
- a database that stores data related to temperatures of ink in a first and a second of the multiplicity of ink fountains for each of a plurality of printing runs of the printing system, wherein a web break occurred in some of the plurality of printing runs and did not occur in others of the plurality of printing runs; and
a processor that determines if there is a correlation between the stored data and the occurrence of web breaks in the printing system.
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Abstract
A device that determines conditions under which a web break is more likely to occur in a printing system stores data pertaining to ink temperature or ink temperature gain. The device then implements a correlation analysis, such as a decision-tree induction analysis, using the stored data to determine if there is a correlation between the one or more attributes and the occurrence of a web break. The device has a multiplicity of ink fountains and includes a first temperature sensor that measures a first ink temperature and a second temperature that measures a second ink temperature. A controller compares the first ink temperature to the second ink temperature to determine an ink temperature gain, compares the ink temperature gain to a desired ink temperature gain range and generates an output signal based on the comparison.
133 Citations
30 Claims
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1. A device for determining conditions under which a break in a web of a printing system having a multiplicity of ink fountains is more likely to occur, comprising:
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a database that stores data related to temperatures of ink in a first and a second of the multiplicity of ink fountains for each of a plurality of printing runs of the printing system, wherein a web break occurred in some of the plurality of printing runs and did not occur in others of the plurality of printing runs; and
a processor that determines if there is a correlation between the stored data and the occurrence of web breaks in the printing system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for use in detecting the occurrence of a problem in a web of a printing system, comprising the steps of:
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collecting data related to an ink temperature in at least two ink fountains for each of a plurality of printing runs of the printing system, wherein the web problem occurred during some of the plurality of printing runs and did not occur during others of the plurality of printing runs; and
determining if the data related to ink temperature is correlated with the occurrence of the web problem during the plurality of printing runs. - View Dependent Claims (9, 10, 11, 12)
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13. A method for use in a printing system, comprising:
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measuring a first ink temperature of a first ink in a first ink fountain of the printing system;
measuring a second ink temperature of a second ink in a second ink fountain of the printing system;
comparing the first ink temperature to the second ink temperature to determine an ink temperature gain;
comparing the ink temperature gain to a desired ink temperature gain range; and
generating an output signal based on the step of comparing the ink temperature gain to the desired ink temperature gain range. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for reducing web breaks in a printing system having a multiplicity of ink fountains, comprising:
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a first temperature sensor that measures a first ink temperature of a first ink in a first ink fountain of the printing system;
a second temperature sensor that measures a second ink temperature of a second ink in a second ink fountain of the printing system; and
a controller that compares the first ink temperature to the second ink temperature to determine an ink temperature gain, that compares the ink temperature gain to a desired ink temperature gain range and that generates an output signal based on the comparison of the ink temperature gain and the desired ink temperature gain range. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification