EP0127831A2
Expired / Lapsed
EP
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Closed loop register control
Assignee: WEB PRINTING CONTROLS Co
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Filing: 1984-05-21
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Granted: —
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Expires: 2004-05-21
Abstract
Abstract A closed loop register control system used in association with a printing press and comprising a television camera in combination with a strobe light and a solid state imaging device which enables continuous scanning of the sheet web. The apparatus of this invention also comprises a printing press console having associated therewith a digitizing tablet and a television monitor. The location of the area that is to be examined is defined by the pressman. The area to be examined may be selected by laying a proof sheet down on the digitizing tablet and recording the coordinates of the area of interest. This controls the camera and strobe light with the pressman selecting one part of the image as important and causing the register mechanism to maintain register in that selected area. Electronics then making comparisons between the detected image and a desired reference image to cause correction on a per color basis at the printing press stations.
Inventors
- 👤 R. Langdon Wales
- 👤 H.W. Crowley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 19:25
CPC Classifications
B; B41; B41F; B41F33/00; B41F33/0036
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A closed loop register control system for providing proper register in multi-color printing in connection with a moving web or sheet substrate having a multi-color image thereon adapted to pass a monitoring station, said system comprising, a television receiver at the monitoring station adapted to be positioned to view a segment of the substrate, means for positioning the television receiver including means for receiving a control signal to provide adjustment of the television receiver relative to the substrate, means under operator control for generating a coordinate control signal for carrying out the adjustment, means for electronically storing a position signal corresponding to a reference color dot, means for electronically storing position signals corresponding to at least one other color dot, means establishing a predetermined desired interpositional signal, means for comparing the electronically observed relative position signals with the desired inerpositional signal to determine if adjustment is necessary and means for providing substrate position correction in the event of a correction signal being generated.
Claim 2
Dependent Claim
163 words
A closed loop register control system for providing proper register in multi-color printing in connection with a moving web or sheet substrate having a multi-color image thereon adapted to pass a monitoring station, said system comprising, a television receiver at the monitoring station adapted to be positioned to view a segment of the substrate, means for positioning the television receiver including means for receiving a control signal to provide adjustment of the television receiver relative to the substrate, means under operator control for generating a coordinate control signal for carrying out the adjustment, means for electronically storing a position signal corresponding to a reference color dot, means for electronically storing position signals corresponding to at least one other color dot, means establishing a predetermined desired interpositional signal, means for comparing the electronically observed relative position signals with the desired inerpositional signal to determine if adjustment is necessary and means for providing substrate position correction in the event of a correction signal being generated.
Claim 3
Dependent Claim
25 words
2, A closed loop register control system as set forth in claim 1 wherein said means for positioning the television receiver includes motor control means.
Claim 4
Dependent Claim
26 words
A closed loop register control system as set forth in claim 2 including strobe light means associated with the television receiver for providing an optical aperture.
Claim 5
Dependent Claim
25 words
A closed loop register control system as set forth in claim 3 wherein said means for generating a coordinate control signal includes a ditigizing tablet.
Claim 6
Dependent Claim
23 words
A closed loop register control system as set forth in claim 4 including a sample or proof sheet associated with the digitizing tablet.
Claim 7
Dependent Claim
21 words
A closed loop register control system as set forth in claim 5 including a television monitor associated with the digitizing tablet.
Claim 8
Dependent Claim
144 words
A closed loop register control system for providing proper register in multi-color printing in connection with a moving web or sheet substrate having a multi-color image thereon adapted to pass a monitoring station, said system comprising, a television receiver at the monitoring station adapted to be positioned to view a segment of the substrate, means for positioning the television receiver including means for receiving a control signal to provide adjustment of the television receiver relative to the substrate, means under operator control for generating a coordinate control signal for carrying out the adjustment, means for establishing a reference position for a reference series of dots comprising the image, means for electronically storing position signals corresponding to at least one other series of color dots and means for comparing the electronically observed relative position signals witn the desired inerpositional signal to provide substrate position corrections.
Claim 9
Dependent Claim
144 words
A closed loop register control system for providing proper register in multi-color printing in connection with a moving web or sheet substrate having a multi-color image thereon adapted to pass a monitoring station, said system comprising, a television receiver at the monitoring station adapted to be positioned to view a segment of the substrate, means for positioning the television receiver including means for receiving a control signal to provide adjustment of the television receiver relative to the substrate, means under operator control for generating a coordinate control signal for carrying out the adjustment, means for establishing a reference position for a reference series of dots comprising the image, means for electronically storing position signals corresponding to at least one other series of color dots and means for comparing the electronically observed relative position signals witn the desired inerpositional signal to provide substrate position corrections.
Claim 10
Independent Claim
121 words
A method for providing a closed loop register control to in turn provide proper register in multi-color printing in connection with a moving web sheet substrate having a multi-color image thereon, said method comprising the steps of providing a television receiver, under operator control positioning the television receiver so as to view a desired segment of the substrate, electronically storing a position signal corresponding to a reference color dot, electronically storing a position signal corresponding to at least one other color dot, establishing a predetermined desired interpositional signal, and comparing the electronically observed relative position signals with the desired interpositional signal to determine if adjustment is necessary and providing substrate position correction in the event of a correction signal being generated.
Claim 11
Independent Claim
121 words
A method for providing a closed loop register control to in turn provide proper register in multi-color printing in connection with a moving web sheet substrate having a multi-color image thereon, said method comprising the steps of providing a television receiver, under operator control positioning the television receiver so as to view a desired segment of the substrate, electronically storing a position signal corresponding to a reference color dot, electronically storing a position signal corresponding to at least one other color dot, establishing a predetermined desired interpositional signal, and comparing the electronically observed relative position signals with the desired interpositional signal to determine if adjustment is necessary and providing substrate position correction in the event of a correction signal being generated.
References Cited (Backward Citations)
No citation records indexed.
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