Web monitoring system
First Claim
1. A method of monitoring defects in material or operations performed on a continuously moving web of record media including the steps of:
- starting movement of record media along a processing line, observing the moving record media, stopping the moving record media upon observing a defect therein,starting the web of record media for moving along the processing line after observing a defect in the web of record media,timing the movement of the web of record media for a first predetermined period of time to allow for preparation of a processing operation,timing the movement of the web of record media for a second predetermined period of time to allow for marking the web of record media at the end of the first predetermined period of time to indicate the end of the defect,marking the web of record media during the second predetermined period of time at one processing operation,sensing the web marking at a subsequent processing operation and indicating that a marking has been sensed on the moving web,stopping the moving web and correcting the defect sensed, andrestarting the moving web after correcting the defect.
1 Assignment
0 Petitions
Accused Products
Abstract
A process for monitoring defects in the material of a moving web of paper or defects in operations performed on the web of paper. An air brush spray head applies ink for a predetermined duration at a location along an edge of the moving web of paper during a press operation and after a predetermined period of time to indicate that a defect has passed. A scanner senses the ink during a subsequent collating operation so that the process line can be stopped and the defect corrected. The location of the ink on the web of paper is at a point wherein the defect has passed and good material is present.
-
Citations
12 Claims
-
1. A method of monitoring defects in material or operations performed on a continuously moving web of record media including the steps of:
-
starting movement of record media along a processing line, observing the moving record media, stopping the moving record media upon observing a defect therein, starting the web of record media for moving along the processing line after observing a defect in the web of record media, timing the movement of the web of record media for a first predetermined period of time to allow for preparation of a processing operation, timing the movement of the web of record media for a second predetermined period of time to allow for marking the web of record media at the end of the first predetermined period of time to indicate the end of the defect, marking the web of record media during the second predetermined period of time at one processing operation, sensing the web marking at a subsequent processing operation and indicating that a marking has been sensed on the moving web, stopping the moving web and correcting the defect sensed, and restarting the moving web after correcting the defect. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A system for monitoring defects in material or operations performed on a continuously moving web of paper comprising
means for starting movement of said web of paper for observing defects therein, means for stopping movement of said web of paper, means for starting the web of paper along a press line of operation after observing a defect in the web of paper, first means for timing the movement of the web of paper for a first predetermined period of time to allow for passage of an observed defect in the web of paper, second means for timing the movement of the web of paper for a second predetermined period of time to allow for marking the web of paper to indicate a location of good material in the web of paper and wherein the extent of the defect has passed, means for marking the moving web of paper during the second period of time, means for sensing the marking on the web of paper which indicates the defect is approaching the marked location along a collating line of operation, and means for stopping the moving web of paper along the collating line of operation for correcting the defect.
Specification