Method and apparatus for marking defective portions of a printed web
First Claim
1. The method of marking defective web portions with a web marker operated by a controller to permit easy sorting, comprising the steps of:
- (a) signaling to a controller detection of a defective web portion by means of a manual or an automatic operator;
(b) instantaneously operating a web marker and continuing to operate said marker for a predetermined time so that said marker marks the web when said controller is signaled by said automatic operator; and
,(c) delaying operation of said web marker for a predetermined period sufficient to permit the defective portion to be juxtaposed with said marker when said controller is signaled by said manual operator and continuously marking the defective web portion thereafter by operation of said marker means until web containing no defect is juxtaposed with said marker after said manual operator signals to said controller that a defect is no longer being detected.
1 Assignment
0 Petitions
Accused Products
Abstract
A printed web marker is used in combination with a multiroll printing press. A web marker is positioned downstream of the last of the rolls for marking defective portions of the printed web. A central controller operates the marker and the controller has off, delay and on control modes. The marker does not operate when in the off mode and marking commences upon expiration of a predetermined period when the controller is shifted from the off to the delay mode and continues thereafter and for a predetermined period after the controller is shifted from the delay to the off mode. Marking commences instantaneously upon the controller being shifted from the off to the on mode. Switches and operators cause the controller to be shifted between the modes so that only defective portions of the web are marked.
41 Citations
21 Claims
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1. The method of marking defective web portions with a web marker operated by a controller to permit easy sorting, comprising the steps of:
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(a) signaling to a controller detection of a defective web portion by means of a manual or an automatic operator; (b) instantaneously operating a web marker and continuing to operate said marker for a predetermined time so that said marker marks the web when said controller is signaled by said automatic operator; and
,(c) delaying operation of said web marker for a predetermined period sufficient to permit the defective portion to be juxtaposed with said marker when said controller is signaled by said manual operator and continuously marking the defective web portion thereafter by operation of said marker means until web containing no defect is juxtaposed with said marker after said manual operator signals to said controller that a defect is no longer being detected. - View Dependent Claims (2, 3, 4)
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5. A control system for a web printing press defect marker , the press having plural print rolls, the control system comprising:
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(a) a central controller for being operably associated with a web marker for controlling operation of the web marker; (b) counter means for being operably associated with one of the rolls and with said controller for monitoring and for signaling to said controller the number of revolutions of an associated roll; (c) timer means operably associated with said controller for monitoring and signaling to said controller elapsed time; (d) a manually operable switch operably associated with said controller and with said counter means and for being operably associated with the press so that operation of the web marker is delayed for a predetermined number of revolutions of the print rolls when said switch is activated and cessation of operation is delayed for a predetermined number of revolutions of the print rolls after deactivation of said switch; and
,(e) an automatic operator operably associated with said controller and with said timer means and for being operably associated with the press for causing substantially instantaneous operation of the marker upon activation of said operator and for causing continued operation for a predetermined time. - View Dependent Claims (6, 7, 8)
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9. A printed web defect marker for a web printing press having plural print rolls, comprising:
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(a) web marker means downstream of at least one of the rolls for marking defective portions of a web printed by the press; (b) control means operably associated with said marker means for selectively operating said marker means, said control means having off, delay and on control modes whereby said marker means does not mark the web when said control means is in said off mode, marking of the web commences upon expiration of a predetermined period upon shifting of said control means from said off to said delay mode and continues thereafter and for a predetermined period after said control means is shifted from said delay to said off mode and marking of the web commences substantially instantaneously upon said control means being shifted from said off to said on mode; and
,(c) mode selector means operably associated with said control means for shifting said control means between said modes so that only defective portions of the web are marked. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification