PATENT CLAIM ANALYSIS

Application Number: 16155925
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-04
Patent Classification: ["347", "014000"]

Abstract:
A method detects defective printing nozzles in an inkjet printing machine having a computer. The method includes printing a multi-row nozzle test chart for detection purposes, the test chart contains a number of horizontal rows of equidistant vertical lines printed periodically and disposed underneath one another. Wherein in every row of the nozzle test chart periodically only those respective printing nozzles of the print head contribute to the first element of the nozzle test chart that correspond to the specified number of the horizontal rows. An area coverage element geometrically associated with the nozzle test chart is printed. Both elements are recorded by an image sensor and both elements are evaluated by the computer. Defective printing nozzles are identified by evaluating the recorded nozzle test chart by the computer. Defects are allocated in the area coverage element to the printing nozzles in the nozzle test chart by the computer.

Claim (Index 1):
A method for detecting defective printing nozzles in an inkjet printing machine having a computer, which method comprises the steps of:\n printing a multi-row nozzle test chart for detection purposes, the multi-row nozzle test chart having a specified number of horizontal rows of equidistant vertical lines printed periodically and disposed underneath one another, wherein in every row of the multi-row nozzle test chart periodically only respective printing nozzles of a print head of the inkjet printing machine contribute to a first element of the multi-row nozzle test chart that correspond to the specified number of the horizontal rows; printing an area coverage element in such a way that the area coverage element is geometrically associated with the multi-row nozzle test chart; recording both the area coverage element and the multi-row nozzle test chart by means of at least one image sensor; evaluating both the area coverage element and the multi-row nozzle test chart by means of the computer; identifying the defective printing nozzles by evaluating a recorded nozzle test chart by means of the computer; allocating defects in the area coverage element to the printing nozzles in the multi-row nozzle test chart by means of the computer, evaluating parameters of allocated printing nozzles in the nozzle test chart as a function of the defects in the area coverage element by means of the computer, the parameters defining a range of values from which the computer derives thresholds for every allocated printing nozzle; and\n using the thresholds for detecting the defective printing nozzles, wherein an allocation of detected defects in the area coverage element by means of the computer is achieved on a basis of deviations at a corresponding location transverse to a printing direction in the multi-row nozzle test chart, wherein the printing nozzles in the multi-row nozzle test chart that are allocated to the detected defects are always those that, under consideration of the parameters to be evaluated, are most likely to cause the defect.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 97.0
- Lexical Diversity: 2.06579
- Patent Class: 347.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16128731', '16110126', '15278604', '10345939', '12391618']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7738424835637123
- 35 USC 102 Novelty (BERT): 0.4809142049377913
- Combined Prediction Score: 0.7445496557011202
- Mean Citation Score: 218.11068
- Max Citation Score: 224.50377000000003
- Similarity Product: 178.20525749259355

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test