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US3915090A - Printed pattern and embossed pattern registration control system - Google Patents

Printed pattern and embossed pattern registration control system Download PDF

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US3915090A
US3915090A US52357374A US3915090A US 3915090 A US3915090 A US 3915090A US 52357374 A US52357374 A US 52357374A US 3915090 A US3915090 A US 3915090A
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Prior art keywords
pattern
web
means
embossing
roll
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Robert L Horst
Richard M Ringer
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Armstrong World Industries Inc
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Armstrong World Industries Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00Registering, tensioning, smoothing or guiding webs
    • B65H23/04Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1882Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of web
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/02Conveying or guiding webs through presses or machines
    • B41F13/025Registering devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07Embossing
    • B31F2201/0707Embossing by tools working continuously
    • B31F2201/071Type and charactristics of the embossing toools
    • B31F2201/0715Rollers
    • B31F2201/0753Roller supporting, positioning, driving means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07Embossing
    • B31F2201/0779Control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07Embossing
    • B31F2201/0784Auxiliary operations
    • B31F2201/0792Printing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00Printing
    • Y10S101/36Means for registering or alignment of print plates on print press structure

Abstract

A system is disclosed for securing registration of a patterned embossing roll with a similarly patterned printed moving web. The purpose of the embossing roll is to indent the surface of the printed web in register with the printing in certain designated areas. In one embodiment, a series of randomly spaced register marks on the printed web selvage edge and identically spaced register marks on the embossing roll are viewed by appropriate scanners. Electrical signatures representing the two sets of register marks are generated by the sensors and fed to a signal correlator for comparison. The correlator determines the degree of statistical error between the two signatures and displays this error in the form of a time delay on a CRT (Cathode Ray Tube). If manual registration control is desired, an operator can manually adjust the speed or phase of the embossing roll by observing the peaked wave display on the CRT to bring the roll into a statistical best fit of the embossing pattern with the printed pattern. Automatic control of embossing roll speed and orientation to achieve registration is also possible if the correlator is interfaced with a digital computer and servo correction motors on the embosser drive system. The disclosed system is an improvement over conventional benchmark oriented registration sensing and control systems in that it is capable of continuous error determinations and asynchronous error corrections on demand rather than periodically at the end of pattern length intervals.

Description

United States Patent [191 Horst et al.

[ Oct. .28, 1975 [54] PRINTED PATTERN AND EMBOSSED PATTERN REGISTRATION CONTROL SYSTEM [75] Inventors: Robert L. Horst; Richard M.

Ringer, both of Lancaster, Pa.

[73] Assignee: Armstrong Cork Company,

Lancaster, Pa.

22 Filed: Nov. 14, 1974 21 Appl. No.2 523,573

Related Application Data [63] Continuation-impart of Ser. No. 343,569, March 21,

1973, abandoned.

Richardson 101/181 X Primary Examiner-Edgar S. Burr Assistant Examiner-Edward M. Coven [57] ABSTRACT A system is disclosed for securing registration of a patterned embossing roll with a similarly patterned printed moving web. The purpose of the embossing roll is to indent the surface of the printed web in register with the printing in certain designated areas. In one embodiment, a series of randomly spaced register marks on the printed web selvage edge and identically spaced register marks on the embossing roll are viewed by appropriate scanners. Electrical signatures representing the two sets of register marks are generated by the sensors and fed to a signal correlator for comparison. The correlator determines the degree of statistical error between the two signatures and displays this error in the form of a time delay on a CRT (Cathode Ray Tube). If manual registration control is desired, an operator can manually adjust the speed or phase of the embossing roll by observing the peaked wave display on the CRT to bring the roll into a statistical best fit of the embossing pattern with the printed pattern. Automatic control of embossing roll speed and orientation to achieve registration is also possible if the correlator is interfaced with a digital computer and servo correction motors on the embosser drive system. The disclosed system is an improvement over conventional benchmark oriented registration sensing and control systems in that it is capable of continuous error determinations and asynchronous error corrections on demand rather than periodically at the end of pattern length intervals.

7 Claims, 4 Drawing Figures /|8 Traci-565k] 4 worm. H

COUNTER .ZT' COMPUTER STATISTICAL MANUAL OPERATION CORRELATOR US. Patent Oct. 28, 1975 DlGlTAL COM PUTE R FEYEETRBETE. COUNTER MANUAL OPERATION STATISTICAL CORRELATOR CORRELATION COEFFICIENT TIME DELAY 9- PRINTED PATTERN AND EMBOSSED PATTERN REGISTRATION CONTROL SYSTEM CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of applicants copending application, Ser. No. 343,569, filed Mar. 21, 1973 and entitled Printed Pattern and Embossed Pattern Registration Control System, now abandoned.

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention is directed to, but not limited to, an embossing process for a pattern printed sheet and, more particularly, to a process and apparatus for secur ing registration between a patterned embossing roll and a similarly patterned printed web.

2. Description of the'Prior Art Current practice in automatic registration control is summarized in a recent article entitled Web Controls: The State of the Art, by Geoffrey L. Phillips, in the Gravure" magazine, Volume 17, No. 11, Nov. 1971. This article is then followed by another article which lists various registration control systems produced by different companies. Current practice involves the use ofa registration mark at a specific location of each pattern repeat or one mark for several repeats and a cycleby-cycle error detection with subsequent pattern phase and/or repeat length corrective action.

A registration system of the conventional type is marketed by Registron, a division of Bobst Champlain, Inc., and is sold as their Model R-500/R-425 system. The system is basically a specialized control system for maintaining printing registration on high-speed, multicolor web printing and converting machines. It has also been applied to embossing type operations. The Registron system consists of a web scanner, a phase micrometer, a correction computer, control station and servo correction motor. The task of each Registron system is to detect any misregister condition with each revolution of the printing cylinder and automatically control a servo correction motor(s) which restores the printing registration in a minimum time without overcorrecting. The need for automatic registration control is created by the web and press variables. Variations in web characteristics such as moisture content, caliber, curl, etc. will all effect the repeat length established by the first printing station. In addition, variations in dryer temperature, impression pressure, infeed tension, press room 'temperature, humidity, etc. will cause repeat length changes. An accumulation of such repeat length changes, coupled with any short-term register variables, would cause scrap if registration were not controlled.

In the above Registron system, the web scanner views the printed web as it passes under the scanner. As the register mark passes beneath the beam of light that is directed on the web by the web scanner, a pulse is produced. This pulse is compared to a cylinder reference pulse generated by the phase micrometer. The phase micrometer is driven by the printing cylinder. The

phase micrometer has two functions. One is to produce a live electrical gate which is used to select the proper register target. The other function is to produce the reference pulse as described above. The correction computes the magnitude and direction of the register error. Electrical output signals are generated by the computer to drive a servo correction motor at the proper speed in the proper direction to eliminate the misregister. The control station provides for either the manual or automatic control of both the running register and phase setting during the normal 'press operation. The way the corrections are actually made is that the output of the computer drives a servo correction motor at a speed proportional] to the register error, the rate of register error and the press speed. As the register error is reduced towards zero, the servo correction motor runs slower and slower until at zero error, the servo correction motor is stopped.

The major deficiency of the prior art structures is that register error determinations are made only at specific points in the pattern and, therefore, provide an indication at some single point in time to indicate a change that has occurred over a time span period. This time span period may normally involve anywhere from 9 to 54 inches in web travel.

SUMMARY OF THE INVENTION Unlike conventional registration systems that provide only periodic register error determinations, the invention described herein provides for continuous, high resolution error determinations. A web of material is passed through normal processing operations until it reaches a point where it has a printed design on the surface thereof, and it is just prior to the time that it is desirable to place an embossed pattern on the web in register with the printed design. Two phototransistor sensors are positioned to view two signature tracks. Both phototransistor sensors are spaced the same distance from the nip of the embossing roll structure. One is positioned to continuously view the moving web, while the other is positioned to continuously view either the circumference of the embossing roll or a signature disc coupled to the embossing roll. For optimum results, both these surfaces are provided with registration tracks. However, it is also possible to use the actual patterns on each surface in place of separate, but patternrelated tracks. As the pattern track changes, reflectivity of the surface changes, and. this in turn is sensed by the phototransistor sensors. Since the printed pattern and the embossed pattern are similar, the output of both phototransistor sensors will be similar; moreover, if the object patterns are in register, the electrical signatures will be in time synchronization. The output from the two phototransistor sensors is fed to a statistical correlator which continuously compares the outputs. A very high resolution of error deviation from normal is provided by analysis in real-time of the crosscorrelation function, and this then can be used manually or automatically to cause a change in the speed and/or phase of the embossing roll to bring the embossing into register with the printed design on the web.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 of the drawing is a schematic representation of the control system of the invention herein;

FIG. 2 is a showing of the selvage edge ofa sheet with register marks;

FIG. 3 is a top view of a repeat pattern and the representation of the electronic signature of the pattern; and

FIG. 4 is a plotting of the correlation of the abovementioned electronic signatures of the printed pattern and embossing roll.

DESCRIPTION OF THE PREFERRED EMBODIMENT The schematic representation of the apparatus for carrying out the invention herein is shown in the drawing as FIG. 1. The web being processed in the apparatus of the drawing in a conventional resilient vinyl covering material which has a design printed on the upper surface thereof. The invention is not specifically restricted to resilient vinyl floor covering, but could be used with any web which is moving and has a pattern printed thereon. For example, it could be utilized with a paper, plastic, rubber, etcv web with a part of a design printed thereon by one station of a press and it is now desired to print additional parts of the overall design in register with the first printing. The invention is applicable to the registration of any two moving patterned surfaces if one can be adjusted in relationship to the other. While the invention is shown on the drawing as an embossing roll structure, it is equally applicable to printing structures, etc. as described above.

Web 2 is passed through its appropriate processing steps so as to have on the upper surface thereof a printed design such as that of FIG. 3. The web moves towards an embossing roll assembly 4 which is composed of an embossing roll 6 and a back-up roll 8. The embossing roll 6 is provided with a pattern which is basically the same as that printed on the web 2. It is desired to place the embossed pattern on the roll 6 in register with the similar printed pattern on the web 2. The required registration is secured by the invention herein.

Two phototransistor sensors 12 and 14 are utilized to sense the patterns on the web 2 and the embossing roll 6. The patterns can be a plurality of prior art type register marks 7 which are placed along the edge of the embossing roll 6 and edge (selvage) of web 2 or back of web 2) as shown in FIG. 2, or they can simply be the printed pattern and embossing roll pattern themselves as shown in FIG. 3 or a specially designed pattern track which is related to the printed pattern on the web 2. The same pattern of register marks or design pattern exists on both the embossing roll or an attendant device and the sheet to be embossed and the drawing shows these patterns on the sheet only. The pattern on the embossing roll will be the same as on the sheet. The phototransistor sensors are placed the same distance from the nip of the embossing roll 6 and the back-up roll 8. This distance may be a physical measurement distance or it can be a time distance in that the sensors are positioned so that the reference marks are in a timed synchronization whereby the reference signals generated are watched at the time registration exists. For example, if the phototransistor sensor 12 scanning the web was positioned 6 inches upstream from the nip of the embossing rollstructure 4, then the second phototransistor sensor 14 would be placed 6 inches upstream from the nip of the embossing roll structure as measured along the periphery of the embossing roll 6. The second phototransistor sensor 14 is used to scan the pattern on the embossing roll while the first photo transistor sensor 12 scans the pattern on the moving web to be embossed and both patterns are the same.

The phototransistor sensor is a transistor which is sensitive to variations in light and converts these variations into electrical impulses. An illuminating means is designed to illuminate the areas to be scanned. As the pattern varies, there will be a variation in reflectivity, and this in turn will result in variations in the output signal of the phototransistor sensor. The output of the phototransistor sensor is directly related to the variations in reflectivity of the pattern. Each pattern has its own characteristic variations. The electrical signals of each pattern or the electrical signature of each pattern varies within each repeat length, but will repeat itself with each repeat length. The signal from the register marks 7 on the edge of the web 2 will provide an electrical signature 9 which is basically a straight line with a series of peaks spaced as per the spacing of the register marks (see FIG. 2). The electrical signature for the pattern as shown in FIG. 3 will be the electrical signature 11 as shown therein.

The signals from the two phototransistor sensors are then fed into a digital correlator 16. An example of one such instrument is a Hewlett-Packard Model 3721A Correlator. The phototransistors 12 and 14 transmit their varying output to the correlator. The correlator continuously calculates and updates the crosscorrelation function of the two input signals. Briefly, this means that the correlator operates by repetitively solving the standard statistical equation and continuously displays on its CRT the most recent values of the correlation coefficient as the function of the time between the two input signals x(t) and y(t). The calculated data are available for manipulation by a digital computer and, also, are displayed on the Cathode Ray Tube (CRT) of the correlator instrument. The point of maximum correlation is indicated on the CRT plot by a maximum (or, under certain conditions, a minimum). Thus, if the pattern signature of one phototransistor sensor is in phase with the pattern signature of another phototransistor sensor, the maximum correlation coefficient is at a time delay of zero. This also means that the embossing roll pattern is going to be in register with the printed pattern at the nip of the embossing roll structure 4 for the case of sensors placed at equal time distances from the nip.

The Hewlett-Packard Model 3721A Correlator, like other cross-correlators; is provided with two input channels A and B which receive the signals to be statistically compared. The phototransistor sensors of this invention are connected to these channels. The correlator is designed to compute the cross-correlation function of the input data. This is the process of establishing a similarity or, in other words, determining the statistical best fit between the data being fed into the machine. The cross-correlation function describes the relationship quantitatively and with respect to time shift between inputs A and B. The correlator continuously computes and displays values of the correlation function. The correlator is constantly receiving new input data and the result is that the correlation function is continuously updated, and the statistical match between the electrical pattern signatures is known in real time period. The 100 value simultaneous comparison can be viewed on the CRT display which is part of the correlator and the operator may use this to manually lim rr/ make registration error corrections. Additionally, the Hewlett-Packard Correlator is designed to be used with a digital computer which provides a means for further data manipulation and automatic control. The Hewlett- Packard Correlator has a program control feature, an interface connection point, for permitting a computer to be interfaced with the correlator so that the error signal generated by the correlator, which is in effect an electronic binary signal representing the material which is displayed on the CRT, can be fed to a digital computer so that the digital computer in turn can operate the necessary correction apparatus to bring the patterns into synchronization.

With a visual readout of the cross-correlation function in the form of a 100 point plot on the CRT display of the correlator 16 as shown in FIG. 4, it is now possible for an operator to see errors in registration and take appropriate manual corrective action. With the correlation maximum displaced to the center of the CRT display by means of a time delay unit 28, it has been demonstrated that an operator can adjust the object pattern devices to be in registry to an accuracy of a few thousandths of an inch. Normally, a zero time delay error without the time delay unit 28, will put the display max imum on the left of the display screen and this would allow errors in one direction only to be viewed for control purposes. In FIG. 4 peak is the time delay comparison maximum, displaced with respect to the zero reference at the center of the display through the use of time delay unit 28. By manually controlling a below described differential transmission in the drive train of the embossing roll, it is possible for an individual line operator to manually control registration by keeping the peak 15 of the display on the vertical cross 17 of the CRT screen.

It is also possible to automatically control registration using the invention herein. For the automatic mode of operation, rather than using the display on the CRT, the correlator will feed its output in the form of a digital data to a conventional digital computer; for example, a computer sold under the trade name of IBM, Hewlett- Packard, etc. The computer is simply hooked into the correlator at the proper computer connection point built into the correlator and this then provides the computer 18 with feed-out data from the correlator. The computer 18 acting upon an appropriate process algorithm and the data At it receives from the correlator and the data (v) from velocity transducer 30 can initiate corrective action f (As) to the embossing roll by I means of a servo correction motor and/or motors 20 in ,the embossing drive train.

The drive train of the embossing structure 4 can be described as follows: A conventional drive motor 22 drives a conventional variable speed transmission 24. The variable speed transmission in turn drives the back-up roll 8 and a differential draw transmission 26 which is connected to and drives the embossing roll 6.

The differential draw transmission 26 is typically a Graham transmission or a Fairchild Hiller Specon transmission, or the equivalent. This unit has associated with it a correction motor or motors 20 which are used to alter the output speed of the differential transmission 26 to effect registration of the embossing roll 6 with the printed web 2. The correction motor or motors 20 change the speed and/or phase of the embossing roll or computer control calculations. The correction motors are remotely controlled by the operator through manual switches when the apparatus is in the manual mode of operation or by the computer when it is in the automatic mode of operation. Consequently, if the embossing roll 6 is out-of-register with the printed web 2, the embossing roll 6 will either be speed v'aried (up or down) and/or phase shifted to bring it into register with the printed pattern. A control unit 19 operates the correction motors 20 and this unit may be manually or computer controlled. If the repeat length of the printed pattern on the web is less than or more than the pattern on the embossing roll, then the speed control motor is used to speed up or slow down, respectively, the embossing roll speed to shrink or stretch out the pattern being embossed to match it with the printed pattern. If the pattern length being embossed equals the printed pattern length, but the patterns are out-of-register, i.e, out of phase, then the phase control motor is used. This causes a phase shift between the input drive and the output drive of the draw transmission and this in turn results in the patterns being placed in registry.

Therefore, this invention as described above, provides for a new and improved method of manually or automatically controlling registration of a pattern to be applied to a web with a pattern which has already been applied to the same web.

What is claimed is:

1. An apparatus for controlling the register between the pattern about to be placed upon a web of material and a pattern which has already been placed upon a web of material, said pattern being repeated on the web at a predetermined repeat length, and the pattern which is to be placed upon the web of material to be placed thereon in register with the pre-existing pattern, comprising:

a. two scanner means,

1. one scanner means scanning the pattern which exists upon the web of material,

2. said second scanner means scanning the pattern which is to be placed upon the web of material, said pattern which is about to be placed upon the web of material being on the surface of a rotary pattern-applying structure,

3. both said scanners being positioned the same time distance from the point where the pattern applying structure engages the web of material to apply the pattern thereon,

b. a correlator means receiving continuous electrical signature signals from the two scanner means and comparing the electrical signature signals from the two scanner means for the best statistical match, 1. said correlator means continuously providing an indication of the phase relationship of the signals from the two scanner means, said phase relation ship of the signals being related to the relationship of the two patterns being sensed,

2. said correlation means providing an indication of any error in the relationship between the two signals from the scanner means, and

c. control means connected with the drive for the pattern-applying means to adjust the operation of the pattern-applying means so that the patternapplying means can be controlled to place its pattern in register with the pre-existing pattern on the web.

2. The apparatus of claim 1 wherein the correlation means provides a signal to a digital computer in combination with a signal from a web velocity transducer to develop a correction signal which is automatically fed to the control means for the pattern-applying structure to automatically correct the drive of the patternapplying structure to bring the pattern thereon in registry with the pre-existing pattern of the web of material.

3. The apparatus of claim 1 wherein the pattern on the web and on the pattern-applying structure are com posed of a main pattern and a control pattern on the edge of the web and this control pattern is what is viewed by the scanner means.

4. The method of controlling the register between a pattern about to be placed upon a web and a pattern which has already been placed upon the web, said pattern being repeated on the web at a predetermined length, and the pattern which is to be placed upon the web of material to be placed thereon in register with the pre-existing pattern, comprising the steps of:

a. scanning by a first scanner the pattern which is to be placed upon the web of material, said pattern is on the surface of a rotary pattern-applying means,

b. scanning by a second scanner the pattern which exists upon the web of material,

c. positioning both scanners the same time distance from the point where the pattern-applying means engages the web of material to apply the pattern thereon,

d. developing continuous pattern signature signals from the scanners as they scan the patterns, said signals being indicative of the patterns, and feeding these signals to a comparison means,

e. comparing the signals from the scanners by statistical means to secure the best statistical match there- 5. The method of claim 4 wherein the signals are compared by statistical means which utilizes approximately separate points of comparison between the pattern signatures to develop an error signal.

6. The method of claim 4 wherein there is the additional steps of:

a. developing a correction signal by relating the web velocity to the indicator of any error in the relationship between the two signals from the scanner, and

b. feeding the correction signal to the control drive means of the pattern-applying means to automatically correct the drive of the pattern-applying means to bring the pattern thereon in register with the pre-existing pattern of the web of material.

7. The method of claim 6 wherein the pattern on the web and on the pattern-applying structure are composed of a main pattern and a control pattern on the edge of the web and this control pattern is viewed by the scanners.

UNITED STATES PATENT OFFICE fiETtFICATE 6F CORRECTION PATENT NO. 3,915,090

DATED October 28, 1975 INVENTOR(S) Robert: L. Horst et: a].

It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown beiow:

In Fig. l of the drawing, the delay signal x(f) should read gigne'd and Sealed this twenty-seventh Day of April1976 [SEAL] Arrest.-

RUTH C. MASON C. MARSHALL DANN Alrc'sll'ng Officer (rmrmissimu'r uj'larems and Trademarks

Claims (10)

1. An apparatus for controlling the register between the pattern about to be placed upon a web of material and a pattern which has already been placed upon a web of material, said pattern being repeated on the web at a predetermined repeat length, and the pattern which is to be placed upon the web of material to be placed thereon in register with the pre-existing pattern, comprising: a. two scanner means, 1. one scanner means scanning the pattern which exists upon the web of material, 2. said second scanner means scanning the pattern which is to be placed upon the web of material, said pattern which is about to be placed upon the web of material being on the surface of a rotary pattern-applying structure, 3. both said scanners being positioned the same time distance from the point where the pattern-applying structure engages the web of material to apply the pattern thereon, b. a correlator means receiving continuous electrical signature signals from the two scanner means and comparing the electrical signature signals from the two scanner means for the best statistical match, 1. said correlator means continuously providing an indication of the phase relationship of the signals from the two scanner means, said phase relationship of the signals being related to the relationship of the two patterns being sensed, 2. said correlation means providing an indication of any error in the relationship between the two signals from the scanner means, and c. control means connected with the drive for the patternapplying means to adjust the operation of the pattern-applying means so that the pattern-applying means can be controlled to place its pattern in register with the pre-existing pattern on the web.
2. The apparatus of claim 1 wherein the correlation means provides a signal to a digital computer in combination with a signal from a web velocity transducer to develop a correction signal which is automatically fed to the control means for the pattern-applying structure to automatically correct the drive of the pattern-applying structure to bring the pattern thereon in registry with the pre-existing pattern of the web of material.
2. said correlation means providing an indication of any error in the relationship between the two signals from the scanner means, and c. control means connected with the drive for the pattern-applying means to adjust the operation of the pattern-applying means so that the pattern-applying means can be controlled to place its pattern in register with the pre-existing pattern on the web.
2. said second scanner means scanning the pattern which is to be placed upon the web of material, said pattern which is about to be placed upon the web of material being on the surface of a rotary pattern-applying structure,
3. The apparatus of claim 1 wherein the pattern on the web and on the pattern-applying structure are composed of a main pattern and a control pattern on the edge of the web and this control pattern is what is viewed by the scanner means.
3. both said scanners being positioned the same time distance from the point where the pattern-applying structure engages the web of material to apply the pattern thereon, b. a correlator means receiving continuous electrical signature signals from the two scanner means and comparing the electrical signature signals from the two scanner means for the best statistical match,
4. The method of controlling the register between a pattern about to be placed upon a web and a pattern which has already been placed upon the web, said pattern being repeated on the web at a predetermined length, and the pattern which is to be placed upon the web of material to be placed thereon in register with the pre-existing pattern, comprising the steps of: a. scanning by a first scanner the pattern which is to be placed upon the web of material, said pattern is on the surface of a rotary pattern-appLying means, b. scanning by a second scanner the pattern which exists upon the web of material, c. positioning both scanners the same time distance from the point where the pattern-applying means engages the web of material to apply the pattern thereon, d. developing continuous pattern signature signals from the scanners as they scan the patterns, said signals being indicative of the patterns, and feeding these signals to a comparison means, e. comparing the signals from the scanners by statistical means to secure the best statistical match therebetween and continuously providing an indication of the phase relationship of the signals from the scanners, said phase relationship of the signals being related to the relationship of the two patterns being scanned, f. providing an indication of any error in the relationship between the two signals from the scanners, and g. controlling the drive of the pattern-applying means to adjust the operation of the pattern-applying means so that the pattern-applying means can be controlled to place its pattern in register with the pre-existing pattern on the web.
5. The method of claim 4 wherein the signals are compared by statistical means which utilizes approximately 100 separate points of comparison between the pattern signatures to develop an error signal.
6. The method of claim 4 wherein there is the additional steps of: a. developing a correction signal by relating the web velocity to the indicator of any error in the relationship between the two signals from the scanner, and b. feeding the correction signal to the control drive means of the pattern-applying means to automatically correct the drive of the pattern-applying means to bring the pattern thereon in register with the pre-existing pattern of the web of material.
7. The method of claim 6 wherein the pattern on the web and on the pattern-applying structure are composed of a main pattern and a control pattern on the edge of the web and this control pattern is viewed by the scanners.
US3915090A 1973-03-21 1974-11-14 Printed pattern and embossed pattern registration control system Expired - Lifetime US3915090A (en)

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CA 232709 CA1056482A (en) 1974-11-14 1975-08-01 Printed pattern and embossed pattern registration control system
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Cited By (55)

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US4066015A (en) * 1975-07-11 1978-01-03 Uarco Incorporated Stationery printing apparatus for continuous business forms stationery assemblies
FR2374147A1 (en) * 1976-12-14 1978-07-13 Deritend Eng Co Apparatus for processing sheet material, in particular for cutting a pre-printed sheet
US4165465A (en) * 1976-08-10 1979-08-21 Toppan Printing Co., Ltd. System for checking printed condition of printed sheet matters
FR2415487A1 (en) * 1978-01-28 1979-08-24 Ditzel Gmbh Gebr Method for applying a coating material, according to an exact registration, the pre-printing of repetition of the drawing, a strip and apparatus for implementing such process
FR2443336A1 (en) * 1978-12-08 1980-07-04 Ditzel Gmbh Gebr Wall paper embossing process - gives one web to another and passes product through tension control roller pairs
US4238999A (en) * 1977-11-07 1980-12-16 Reggiani Macchine S.P.A. Rotary cylindrical screen printing apparatus for specularly printing equal patterns and/or colors onto the opposite faces of fabrics or the like
WO1982000975A1 (en) * 1980-09-12 1982-04-01 Dahlgren H Planetary conveyor system
US4363271A (en) * 1979-05-17 1982-12-14 Armstrong World Industries, Inc. Pattern registration control bars
FR2512737A1 (en) * 1981-09-16 1983-03-18 Roland Man Druckmasch Method and device for the adjustment of the positioning of up printing plates on the plate cylinders in a printing press
EP0079153A1 (en) * 1981-10-30 1983-05-18 Crosfield Electronics Limited Controlling register in a printing press
US4452140A (en) * 1981-02-19 1984-06-05 Crosfield Electronics Limited Printed web registration control apparatus
US4485982A (en) * 1982-11-24 1984-12-04 Xerox Corporation Web tracking system
US4491833A (en) * 1980-06-28 1985-01-01 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Equipment for indication of the electrically measurable positions or adjustments of individual units required for the printing process
GB2145663A (en) * 1983-08-29 1985-04-03 Windmoeller & Hoelscher Method and apparatus for regulating printing in printing machines
US4586431A (en) * 1984-06-15 1986-05-06 Calman Donald R Method of simulated engraved printing
US4596468A (en) * 1981-09-16 1986-06-24 M.A.N.-Roland Druckmaschinen Aktiengesellschaft System for scanning color printing register marks printed on the printed sheets
US4685394A (en) * 1986-02-20 1987-08-11 Molins Machine Company Phase register control for printer-slotter machine
EP0260498A1 (en) * 1986-08-29 1988-03-23 Graphic Packaging Corporation Web lateral position control
WO1988003091A1 (en) 1986-10-31 1988-05-05 Quad/Tech, Inc. Improved cutoff control system
USRE32967E (en) * 1982-11-24 1989-06-27 Xerox Corporation Web tracking system
EP0329701A1 (en) * 1986-10-27 1989-08-30 Graphic Packaging Corporation Phasing control system for web having variable repeat length portions
US4887530A (en) * 1986-04-07 1989-12-19 Quad/Tech, Inc. Web registration control system
US5127324A (en) * 1990-11-06 1992-07-07 Heidelberg Harris Gmbh Adjustment apparatus with DC drive system for use in a printing press
US5239924A (en) * 1990-05-29 1993-08-31 Windmoeller & Holscher Printing press, preferably flexographic printing press
US5272980A (en) * 1990-08-31 1993-12-28 Dai Nippon Printing Co. Ltd. Alignment method for transfer and alignment device
US5361960A (en) * 1990-01-22 1994-11-08 Sequa Corporation Off-line web finishing system with splice and missing mark stability
US5412577A (en) * 1992-10-28 1995-05-02 Quad/Tech International Color registration system for a printing press
US5450788A (en) * 1994-08-05 1995-09-19 Shan; Chen C. Printer for plastic bags
US5735205A (en) * 1996-11-07 1998-04-07 Westvaco Corporation Printing press controller
US5771811A (en) * 1996-10-10 1998-06-30 Hurletron, Incorporated Pre-registration system for a printing press
US5815539A (en) * 1992-01-22 1998-09-29 Trimble Navigation Limited Signal timing synchronizer
US5828075A (en) * 1996-10-11 1998-10-27 Hurletron, Incorporated Apparatus for scanning colored registration marks
WO1999029508A1 (en) * 1997-12-11 1999-06-17 Teich Aktiengesellschaft Method for producing partially embossed cover members for containers
US5938354A (en) * 1996-07-02 1999-08-17 Brother Kogyo Kabushiki Kaisha Image forming apparatus
US6018687A (en) * 1997-02-07 2000-01-25 Quad/Tech, Inc. Method and apparatus for printing cutoff control using prepress data
EP1005981A1 (en) * 1998-11-25 2000-06-07 MAN Roland Druckmaschinen AG Device and method for the compensation of slip of a tubular printing form
US6256474B1 (en) * 1997-11-10 2001-07-03 Oce Printing Systems Gmbh Method and device for conveying a pre-printed striplike recording medium in a printing device
US6293194B1 (en) * 1996-05-07 2001-09-25 Heidelberg Harris Inc. Method and apparatus for adjusting the circumferential register in a web-fed rotary printing press having a plate cylinder with a sleeve-shaped printing plate
US6321648B1 (en) * 2000-02-14 2001-11-27 Xerox Corporation Systems and methods for unforgeable document tagging
US6591746B2 (en) 2001-06-13 2003-07-15 Hurletron, Incorporated Registration system for printing press
US6619209B2 (en) * 2001-08-22 2003-09-16 Nexpress Solutions Llc Process and printing machine for determining registration errors
US20030207083A1 (en) * 1999-12-23 2003-11-06 Krister Hansson Process for the manufacturing of surface elements
US20040012109A1 (en) * 2002-07-17 2004-01-22 Brossman W. Craig Method and apparatus for process control of mechanical embossing texturing
US20040219334A1 (en) * 2001-09-13 2004-11-04 Frank Watts Surface covering having differential gloss in-register and method of making
US20040258887A1 (en) * 2003-06-23 2004-12-23 The Procter & Gamble Company Rolled substrate products with highly registered printed images and embossment patterns
US20050079332A1 (en) * 2003-10-09 2005-04-14 Tim Bauer Laminated medical examination paper
US20050175222A1 (en) * 1999-05-25 2005-08-11 Silverbrook Research Pty Ltd System for authorising a user to use a sensing device using a form
US20060236885A1 (en) * 2005-04-20 2006-10-26 Poulain Dana E Method for tracking a registered pattern to a continuous web
US20070163454A1 (en) * 2004-02-06 2007-07-19 Orlandi S.P.A. Process and equipment for printing on non-woven-fabric
US20070243278A1 (en) * 2006-04-14 2007-10-18 S-Tech S.R.L Logo embossing assembly for products such as tissues, napkins and the like
WO2008114018A2 (en) 2007-03-19 2008-09-25 Chesapeake Plc Rotary embossing
WO2009141217A1 (en) * 2008-05-20 2009-11-26 British American Tobacco (Investments) Limited Apparatus and method for making a smoking article
WO2011042353A1 (en) * 2009-10-06 2011-04-14 British American Tobacco (Investments) Limited Embossed paper for ventilation
US8300274B2 (en) 1999-11-10 2012-10-30 Digimarc Corporation Process for marking substrates with information using a texture pattern and related substrates
US9503613B1 (en) 2015-11-24 2016-11-22 Xerox Corporation Scanning previous printing passes for registration of subsequent printing passes

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US3152542A (en) * 1961-05-19 1964-10-13 Machines Speciales Sa Soc Et Devices for automatically preadjusting the different elements of a printing machine
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Cited By (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066015A (en) * 1975-07-11 1978-01-03 Uarco Incorporated Stationery printing apparatus for continuous business forms stationery assemblies
US4165465A (en) * 1976-08-10 1979-08-21 Toppan Printing Co., Ltd. System for checking printed condition of printed sheet matters
FR2374147A1 (en) * 1976-12-14 1978-07-13 Deritend Eng Co Apparatus for processing sheet material, in particular for cutting a pre-printed sheet
US4238999A (en) * 1977-11-07 1980-12-16 Reggiani Macchine S.P.A. Rotary cylindrical screen printing apparatus for specularly printing equal patterns and/or colors onto the opposite faces of fabrics or the like
FR2415487A1 (en) * 1978-01-28 1979-08-24 Ditzel Gmbh Gebr Method for applying a coating material, according to an exact registration, the pre-printing of repetition of the drawing, a strip and apparatus for implementing such process
FR2443336A1 (en) * 1978-12-08 1980-07-04 Ditzel Gmbh Gebr Wall paper embossing process - gives one web to another and passes product through tension control roller pairs
US4363271A (en) * 1979-05-17 1982-12-14 Armstrong World Industries, Inc. Pattern registration control bars
US4491833A (en) * 1980-06-28 1985-01-01 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Equipment for indication of the electrically measurable positions or adjustments of individual units required for the printing process
WO1982000975A1 (en) * 1980-09-12 1982-04-01 Dahlgren H Planetary conveyor system
US4452140A (en) * 1981-02-19 1984-06-05 Crosfield Electronics Limited Printed web registration control apparatus
US4596468A (en) * 1981-09-16 1986-06-24 M.A.N.-Roland Druckmaschinen Aktiengesellschaft System for scanning color printing register marks printed on the printed sheets
FR2512737A1 (en) * 1981-09-16 1983-03-18 Roland Man Druckmasch Method and device for the adjustment of the positioning of up printing plates on the plate cylinders in a printing press
EP0079153A1 (en) * 1981-10-30 1983-05-18 Crosfield Electronics Limited Controlling register in a printing press
US4485982A (en) * 1982-11-24 1984-12-04 Xerox Corporation Web tracking system
USRE32967E (en) * 1982-11-24 1989-06-27 Xerox Corporation Web tracking system
GB2145663A (en) * 1983-08-29 1985-04-03 Windmoeller & Hoelscher Method and apparatus for regulating printing in printing machines
US4586431A (en) * 1984-06-15 1986-05-06 Calman Donald R Method of simulated engraved printing
US4888717A (en) * 1984-11-02 1989-12-19 Adolph Coors Company Web lateral position control apparatus and method
US4685394A (en) * 1986-02-20 1987-08-11 Molins Machine Company Phase register control for printer-slotter machine
US4887530A (en) * 1986-04-07 1989-12-19 Quad/Tech, Inc. Web registration control system
EP0260498A1 (en) * 1986-08-29 1988-03-23 Graphic Packaging Corporation Web lateral position control
EP0329701A1 (en) * 1986-10-27 1989-08-30 Graphic Packaging Corporation Phasing control system for web having variable repeat length portions
EP0329701A4 (en) * 1986-10-27 1990-05-14 Coors Co Adolph Phasing control system for web having variable repeat length portions.
WO1988003091A1 (en) 1986-10-31 1988-05-05 Quad/Tech, Inc. Improved cutoff control system
US4885785A (en) * 1986-10-31 1989-12-05 Quad/Tech, Inc. Cutoff control system
US5361960A (en) * 1990-01-22 1994-11-08 Sequa Corporation Off-line web finishing system with splice and missing mark stability
US5239924A (en) * 1990-05-29 1993-08-31 Windmoeller & Holscher Printing press, preferably flexographic printing press
US5272980A (en) * 1990-08-31 1993-12-28 Dai Nippon Printing Co. Ltd. Alignment method for transfer and alignment device
US5127324A (en) * 1990-11-06 1992-07-07 Heidelberg Harris Gmbh Adjustment apparatus with DC drive system for use in a printing press
US5815539A (en) * 1992-01-22 1998-09-29 Trimble Navigation Limited Signal timing synchronizer
US5689425A (en) * 1992-10-28 1997-11-18 Quad/Tech, Inc. Color registration system for a printing press
US5412577A (en) * 1992-10-28 1995-05-02 Quad/Tech International Color registration system for a printing press
US5450788A (en) * 1994-08-05 1995-09-19 Shan; Chen C. Printer for plastic bags
US6293194B1 (en) * 1996-05-07 2001-09-25 Heidelberg Harris Inc. Method and apparatus for adjusting the circumferential register in a web-fed rotary printing press having a plate cylinder with a sleeve-shaped printing plate
US5938354A (en) * 1996-07-02 1999-08-17 Brother Kogyo Kabushiki Kaisha Image forming apparatus
US5771811A (en) * 1996-10-10 1998-06-30 Hurletron, Incorporated Pre-registration system for a printing press
US5828075A (en) * 1996-10-11 1998-10-27 Hurletron, Incorporated Apparatus for scanning colored registration marks
US5917192A (en) * 1996-10-11 1999-06-29 Hurletron, Incorporated Apparatus for scanning colored registration marks
US5735205A (en) * 1996-11-07 1998-04-07 Westvaco Corporation Printing press controller
US6018687A (en) * 1997-02-07 2000-01-25 Quad/Tech, Inc. Method and apparatus for printing cutoff control using prepress data
US6256474B1 (en) * 1997-11-10 2001-07-03 Oce Printing Systems Gmbh Method and device for conveying a pre-printed striplike recording medium in a printing device
WO1999029508A1 (en) * 1997-12-11 1999-06-17 Teich Aktiengesellschaft Method for producing partially embossed cover members for containers
US6314883B1 (en) 1998-11-25 2001-11-13 Man Roland Druckmaschinen Ag Apparatus and method for compensating for slip of a printing-plate sleeve
EP1005981A1 (en) * 1998-11-25 2000-06-07 MAN Roland Druckmaschinen AG Device and method for the compensation of slip of a tubular printing form
US20050175222A1 (en) * 1999-05-25 2005-08-11 Silverbrook Research Pty Ltd System for authorising a user to use a sensing device using a form
US7864162B2 (en) 1999-05-25 2011-01-04 Silverbrook Research Pty Ltd Product having encoded authentication writing areas
US20080314653A1 (en) * 1999-05-25 2008-12-25 Silverbrook Research Pty Ltd Product having encoded authentication writing areas
US8300274B2 (en) 1999-11-10 2012-10-30 Digimarc Corporation Process for marking substrates with information using a texture pattern and related substrates
US20030207083A1 (en) * 1999-12-23 2003-11-06 Krister Hansson Process for the manufacturing of surface elements
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US6321648B1 (en) * 2000-02-14 2001-11-27 Xerox Corporation Systems and methods for unforgeable document tagging
US6591746B2 (en) 2001-06-13 2003-07-15 Hurletron, Incorporated Registration system for printing press
US6619209B2 (en) * 2001-08-22 2003-09-16 Nexpress Solutions Llc Process and printing machine for determining registration errors
US20040219334A1 (en) * 2001-09-13 2004-11-04 Frank Watts Surface covering having differential gloss in-register and method of making
US20080305311A1 (en) * 2001-09-13 2008-12-11 Watts Jr Frank Coated free-standing film
US20070241473A1 (en) * 2002-07-17 2007-10-18 Brossman W C Method for process control of machanical embossing texturing
US20040012109A1 (en) * 2002-07-17 2004-01-22 Brossman W. Craig Method and apparatus for process control of mechanical embossing texturing
US7235197B2 (en) * 2002-07-17 2007-06-26 Awi Licensing Company Method for process control of mechanical embossing texturing
US7510675B2 (en) * 2002-07-17 2009-03-31 Awi Licensing Company Method for process control of mechanical embossing
US20040258887A1 (en) * 2003-06-23 2004-12-23 The Procter & Gamble Company Rolled substrate products with highly registered printed images and embossment patterns
US20090324894A1 (en) * 2003-10-09 2009-12-31 Coating Excellence International Llc Laminated medical examination paper
US20050079332A1 (en) * 2003-10-09 2005-04-14 Tim Bauer Laminated medical examination paper
US20070163454A1 (en) * 2004-02-06 2007-07-19 Orlandi S.P.A. Process and equipment for printing on non-woven-fabric
US8307765B2 (en) * 2004-02-06 2012-11-13 Ahlstrom Corporation Process and equipment for printing on non-woven-fabric
US7343858B2 (en) * 2005-04-20 2008-03-18 Preco Industries, Inc Method for tracking a registered pattern to a continuous web
US20060236885A1 (en) * 2005-04-20 2006-10-26 Poulain Dana E Method for tracking a registered pattern to a continuous web
US20070243278A1 (en) * 2006-04-14 2007-10-18 S-Tech S.R.L Logo embossing assembly for products such as tissues, napkins and the like
WO2008114018A2 (en) 2007-03-19 2008-09-25 Chesapeake Plc Rotary embossing
EP2486811A1 (en) * 2008-05-20 2012-08-15 British American Tobacco (Investments) Limited Apparatus and method for making a smoking article
US20110155000A1 (en) * 2008-05-20 2011-06-30 Karl Kaljura Apparatus and Method for Making a Smoking Article
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