US3556509A - Printed web ribbon registration control system - Google Patents

Printed web ribbon registration control system Download PDF

Info

Publication number
US3556509A
US3556509A US754196A US3556509DA US3556509A US 3556509 A US3556509 A US 3556509A US 754196 A US754196 A US 754196A US 3556509D A US3556509D A US 3556509DA US 3556509 A US3556509 A US 3556509A
Authority
US
United States
Prior art keywords
ribbon
ribbons
error
control system
cycle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US754196A
Other languages
English (en)
Inventor
James N Crum
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harris Graphics Corp
Original Assignee
Harris Intertype Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harris Intertype Corp filed Critical Harris Intertype Corp
Application granted granted Critical
Publication of US3556509A publication Critical patent/US3556509A/en
Assigned to HARRIS GRAPHICS CORPORATION reassignment HARRIS GRAPHICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HARRIS CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, 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
    • B65H23/1882—Registering, 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
    • B65H23/1886—Synchronising two or more webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/025—Registering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting

Definitions

  • This invention relates to a registration control system for printed webs.
  • a relatively wide printed web coming out of the press is slit longitudinally into two or more ribbons, each having a series of printed areas in succession along its length which are separated by smaller unprinted spaces.
  • the ribbons are advanced continuously to gathering cylinders where they are superimposed upon each other in sandwichlike fashion in a predeter mined order.
  • the gathered ribbons are then advanced to perforating and cutoff cylinders, where alternate unprinted spaces between successive printed areas are perforated and severed, respectively.
  • the gathered ribbons are cut into lengths corresponding to half the circumference of the impression cylinder, and each cut length of the ribbon has a transverse perforated line midway along its length.
  • each revolution of the perforating cylinders and each revolution of the eutoff cylinders should correspond to movement of a predetermined length of the web ribbons so that the web ribbons will be perforated and cutoff at predetermined locations in alternate unprinted spaces between the printed areas.
  • this ideal is difficult to achieve and it is an important purpose of the present invention to provide a novel and improved control system for insuring proper registration of the web ribbons with respect to a cyclically operated mechanism which acts on the gathered ribbons, such as a perforating mechanism and/or a cutoff mechanism.
  • Another object of this invention is to provide a novel and improved control system for regulating the velocities of two or more individual printed web ribbons to insure their proper registration with respect to each other and with respect to a cyclically operated mechanism.
  • Another object of this invention is to provide such a system in which each web ribbon passes through an individual control nip whose velocity may be advanced or retarded substantially in accordance with an error factor equal to the sum of twice the misregistration in the present cycle of operation of the cyclically operated mechanism plus the summation of the misregistrations in previous cycles of operation.
  • Another object of this invention is to provide such a system which senses the misregistration of the gathered ribbons close to the cyclically operated mechanism and, if this misregistration exceeds a tolerable minimum value, a phase correction may be applied for reducing the misregistration of the gathered ribbons with respect to the cyclically operated mechanism.
  • Another object of this invention is to provide such a system in which the phase corrections resulting from the detection of misregistration of the gathered ribbons near the cyclically operated mechanism do not interact with the control nip velocity corrections for the individual ribbons to produce system instability.
  • FIG. 1A is a schematic perspective view of a printed web coming from a printing press into a slitter which slits the web longitudinally into four ribbons;
  • FIG. 1B is a schematic perspective view showing the four web ribbons passing through a ribbon drive system in accordance with the present invention
  • FIG. 2 is a schematic diagram illustrating the complete control system of the present invention as applied to two of the web ribbons;
  • FIG. 3 is a schematic block diagram illustrating. part of one of the control nip velocity correction computers in the present control system and pulse timing charts for this part of the control system;
  • FIG. 4 is a schematic block diagram illustrating the remainder of this control nip velocity correction computer
  • FIG. 5 is a schematic block diagram illustrating the phase correction computer in the present system for regulating the phase of the variable phase pulse generator and hence the velocity of all control nips to tend to eliminate any misregistration detected near the perforating cylinders;
  • FIG. 6 is a table showing the operation of the control nip correction computer over several cycles of operation in response to an arbitrarily selected open loop error
  • FIG. 7 shows the open loop error, the correction applied and the actual error, all plotted against the number of cycles of operation, in accordance with the FIG. 6 table.
  • FIGS. 1A and 13 Referring to FIG. 1A, a printed web W coming from the chill rolls 10, ll of a printing press is slit longitudinally by a slitter S into a series of parallel, side-by-side ribbons, here shown as the four ribbons W-l, W-2, W-3 and W-4.
  • the modulus of elasticity of the web W may be different at different locations across its width, so that the modulus of elasticity of one ribbon, W-l for example, may differ from that of one or more of the other ribbons W-Z, W-3 and W-4.
  • the constant tension roller 16 is floatingly supported and is loaded by means of an air cylinder (not shown), which urges roller 16 downward with a predetermined constant force.
  • an air cylinder (not shown), which urges roller 16 downward with a predetermined constant force.
  • the force produced by the air cylinder is equal and opposite to the force produced by tension in the ribbon. Equilibrium can only be obtained when the control nip drive rollers 20 and 21, are driven at a specific speed:
  • Each of the other ribbons W-2, W-3 and W-4 advances through a similar constant tension drive arrangement to a respective control nip.
  • Corresponding elements of the drive arrangement for each of these ribbons are given the same reference numerals as those for the first ribbon, W-l, but with a suffix added which designates the ribbon, For example, the
  • the superimposed ribbons then move between a pair of pull rolls l2 and from there the superimposed ribbons pass between a pair of confronting cutoff cylinders 13 and 14, one of which carries two diametrically opposed blades 13a which sever all of the superimposed ribbons twice for each revolution of the cutoff cylinders.
  • the perforating cylinders 24, 25 and the cutoff cylinders 13, 14 are driven from the press drive.
  • Each ribbon has a plurality of successive identical printed impressions, each having four successive different printed areas in succession lengthwise of the ribbon.
  • the printed areas are spaced-apart in succession along its length by much shorter unprinted spaces between the printed areas.
  • a register mark is printed in every other unprinted space to determine the location where the ribbon is to be perforated by the perforating blade 26, as explained hereinafter.
  • the cutoff blade 13a on cutoff cylinder 13 severs the ribbon at each of the remaining unprinted spaces between printed areas on the ribbon.
  • each perforating cylinder and each cutoff cylinder is substantially equal to the ribbon length of a printed area plus the next adjoining unprinted space, so that one revolution of the perforating and cutoff cylinders takes place during the advance of one impression length of the ribbon (or four printed areas).
  • the passage of one ribbon register mark per impression is sensed near the control nip and its actual instantaneous position is compared with the instantaneous position it should have with respect to the perforating cylinder blade 26 in order that the ribbon will be perforated at the desired location in the unprinted space between alternate printed areas. Any difference between the actual position of the register mark and its desired position is used to temporarily increase or decrease the velocity of the control nip for that ribbon so as to reduce or eliminate this difference, or positional error, by changing the position of the constant tension device 16.
  • Each printed impression on the ribbon should correspond to one revolution of the perforating and cutoff cylinders.
  • the lower control nip roller 21 for each ribbon is driven from the gear train of the press through a respective differential 27.
  • Each differential 27 is controlled by a respective stepping motor 28 which is arranged, through circuitry to be described, to receive correction pulses so as to increase or decrease the speed at which the control nip is drive iii aebraaaaawmrsh im oinarasga tion. tobe explained in detail hereinafter.
  • a respective photoelectric sensor 29 senses the register mark on the respective ribbon as it moves past, and the sensor delivers a register mark pulse over line 30 to one input terminal of a ribbon control nip velocity correction computer 31.
  • This computer also receives a reference pulse on a second input line 32 from a variable phase pulse generator 33 which operates in synchronism with the rotation of the perforating cylinders 24 and 25.
  • the reference pulse on line 32 should coincide in time with the register mark pulse on line 30. In that case, the
  • each of the other web ribbons W-2, W-3 and W-4 has an identical control arrangement, including an individual control nip which is driven through an individual differential from the press drive and with each differential controlled by an individual stepping motor.
  • a separate photoelectric sensor is provided at the control nip for each ribbon to sense the movement of the ribbon register mark past it. The output of this sensor is connected to one input of an individual control nip velocity correction computer, which has a second input connected to the perforator cylinder-operated pulse generator 33.
  • the distances between thecontrol nips and the gathering cylinders 22, 23 are equal, preferably.
  • the pull rolls 12 are driven from the press drive either through a constant torque mechanism 34, such as a constant torque clutch, or through an adjustable speed ratio device. In the former case, the gathering rolls 22, 23 produce a constant tension on the gathered ribbons.
  • V circumferential velocity of chill rolls, inches per second
  • T tension of the gathered ribbons pounds per inch of ribbon width.
  • the stretch per unit length of each of the ribbons in the region between its control nip and the pull rolls 12 will be the same. Since the lengths of the ribbons between the respective control nips and the pull rolls 12 are equal, if one of the ribbons is in proper registration, both at the perforating cylinder and at the ribbon control nip, and if all the other ribbons are in correct registration at their respective control nips, then all ribbons will be in correct registration at the perforating cylinders 24 and 25.
  • the measured instantaneous difference between the actual position of the following register mark as it passes the photoelectric sensor "29 and its desired position to provide exact registration with respect to the perforating blade 26 may be specified as the error distance, E, which is equivalent to a certain number of correction pulses into the stepping motor 28. That is, if it were possible to apply these correction pulses instantaneously to the stepping motor and thereby instantaneously change the control nip speed momentarily, the detected error would be eliminated.
  • the correction cannot be made instantaneously, and merely applying the number of correction pulses equivalent to the error distance, E, during a single cycle of operation would not necessarily bring the ribbon back into correct registration because it would not insure that the correction would catch up to the error.
  • correction pulses, C, are applied to the stepping motor 28 in accordance with the following relationship:
  • E is the misregistration error measured at the end of summation of the individual misregistration errors measured at the end of every preceding cycle of operation up to and including the immediately preceding (n-l) cycle
  • C is the number of correction pulses which are to be applied to the stepping motor in the next (n+1) cycle of operation.
  • the correction computer 31 for each control nip will apply to the stepping motor 28, in response to the sensing of a ribbon register mark by the sensor 29 at that control nip, a number of correction pulses sufficient to provide the correction C, as stated by the foregoing equation (1).
  • These correction pulses will cause the stepping motor to correct the control nip speed by the sum of the previous misregistration the present (n) cycle of operation, is the n-l errors Ek)- plus twice the present. misregistration error (2E,,), in accordance with the foregoing equation (I).
  • control nip speed is regulated to momentarily speedup or slowdown the ribbon to compensate for the present misregistration and to establish a relatively steady state ribbon speed which will maintain a predetermined tension on the ribbon, so that the constant tension roller 16 will remain at a corresponding predetermined level and the ribbon path length through the loop at the constant tension roller will remain substantially constant.
  • the dashed-line enclosure 31a contains the components of the correction computer 31 (FIG. 2) for the control nip.
  • the unprinted space (where the register mark appears) between successive printed areas on the ribbon is only a small fraction of the length of the total printed impression on the ribbon.
  • the photoelectric sensor 29 should be disconnected from the control nip velocity correction computer while any printed area is moving past the sensor; otherwise, the computer might respond to an output signal from the sensor caused by its reading the printed area, whereas the purpose of the sensor is merely to sense the movement of a registration mark past it.
  • the sensor 29 is connected by line 30 to a gate circuit which is normally closed.
  • the gate circuit 35 can be opened only during the small fraction of each revolution of the perforating and cutoff cylinders when the unprinted space between certain printed areas in the correspondingprinted impression on the ribbon is moving past the sensor 29. This open period of gate circuit .35 will be referred to as the window period.
  • One of the perforating cylinders 25 drives an analog-todigital encoder 36 having two different outputs, one of which produces a single output pulse on line 37 for each revolution of the perforating cylinders. and the other of which produces 240 evenly spaced pulses on line 38 for each revolution of the perforating cylinders.
  • the timing or phase relationship of the pulses on lines 37 and 38 with respect to the rotation of cylinder 25 can be varied as explained hereinafter in the description of FIG. 5.
  • line a shows the register mark which occurs in the middle of each printed impression, in the unprinted space between two successive printed areas on the ribbon.
  • the single encoder output pulse on line 37 (line b) occurs at a time, 1,, somewhat ahead of this register mark.
  • This pulse on line 37 is applied to the open" control terminal 39 of gate circuit 35. causing this gate circuit to open.
  • the gate circuit will remain open until a pulse appears at its close" control terminal 40, which is connected to the 240 pulse-per-revolution encoder output line 38 through two series-connected divider circuits 41 and 42, each of which produces a single output pulse for every two input pulses it receives.
  • the gate circuit 35 also has a reference pulse input terminal 43 which is connected to the output of the first divider 41. With this arrangement, the second encoder output pulse which appears on line 38 after the single encoder output pulse appears on line 37 will be applied to terminal 43. This is the reference pulse against which the register mark pulse from sensor 29 is compared. This reference pulse is shown at line at of the FIG. 3 pulse timing chart as occurring at the midway point of the window period of gate circuit 35 (between times t, and r Line 2 of the FIG. 3 pulse timing chart shows the error period, which is the time interval between the leading edge of the register mark pulse (line a) and the leading edge of the reference pulse (line d).
  • the register mark pulse (line a) will occur sometime between times t, and t normally, and it may occur either before or after the reference pulse, depending upon whether the misregistration is lagging or leading, or it may occur simultaneously with the reference pulse if there is no misregistration at all.
  • the horizontal width of the error period (line e) represents the timing error of the register mark.
  • the press may run at speeds of from to 1500 feet per minute. Therefore, the magnitude of the timing error between the register mark pulse and the reference pulse will be a function of the press speed. This timing error must be converted to terms of absolute distance, i.e., fractional inches of error of the reference mark on the web.
  • this is accomplished in a simple and inexpensive manner by providing a DC tachometer 44 driven by the perforating cylinder 25 and having its output connected to a voltage-to-frequency converter 45.
  • This converter produces a series of relatively high frequency output pulses at a frequency which is proportional to the DC voltage output of the tachometer, which in turn is proportional to the rotational speed of the perforating cylinders 24, 25 and the press speed.
  • the converter pulse rate is 350 kilocycles per second, so that each output pulse which converter 45 produces corresponds to approximately .000857 inch of ribbon error or misregistration.
  • error pulses are applied continuouslytoarfihputterminal 46 of the gate circuit 35, but, as shown at line f of the FIG. 3 pulse timing chart, they pass through the gate circuit 35 only during the error period (line e).
  • the number of error pulses passed by the gate circuit 35 will be a function of the time duration of this error period and of the press speed, as explained. Therefore, the number of these error pulses will be proportional to the actual misregistration or distance error of the registration mark on the ribbon.
  • the gate circuit 35 preferably consists of integrated circuit logic units which perform the following logic operations:
  • the gate circuit receives a registration mark pulse from sensor 29 it maintains a logic 1 condition on output line 47 to indicate that the registration mark has been observed by the sensor;
  • Each ribbon nip correction computer 31 includes a pair of bidirectional counters 51 and 52 interconnected by parallel entry circuitry 53.
  • Counter li is the error summation counter for keeping the n-l count of the term 2 E in equation (1).
  • Counter 51 has a count input terminal 54 connected to the 2E,, output line 48 of gate circuit 35 through a divider 55, which divides by two. With this arrangement, the counter input terminal 54 receives every second pulse appearing on line 48 and therefore the number of pulses applied to terminal 54 during any particular cycle of operation is equal to E,, in equation (I) for that cycle. Counter 51 performs the summation of all the previous errors and it is never reset.
  • Counter 51 also has a pair of control terminals 56 and 57 which are connected respectively to the lead and lag output lines 49 and 50 from gate circuit 35.
  • the lead or lag output signal from the gate circuit tells counter 51 to count up or down, as the case may be.
  • the lower counter 52 has a pair of control terminals 58 and 59, which are connected respectively to the lead and lag lines 49 and 50, so that the lead or lag output signal from gate circuit 35 tells the counter 52 to count up or countdown.
  • the lower counter 52 has two different count inputs:
  • counter 52 is m n1 reset to the new 2 k count which is now stored in the error summation counter 51, which is different from the previous error summation count by the amount of the error it delivers a signal to either its "lead" output line 49 or its nl count.
  • the correction pulses which are applied to the stepping motor 28 for the control nip for ribbon W-l are derived from the 240 pulse per impression'out'put of the' encoder 36 during the major portion of each cycle outside the window period shown at line 0 of the FIG. 3 ptilse timing chart.
  • the 240 pulse per impression encoder output line 38 is connected to a divider 70, which divides by four, so that for every four pulses on its input line 38 the divider passes a single pulse to its output line 71.
  • Line 71 is connectedto the input of a normally closed gate 72 having an output line 73 connected to the inputs of a pair of gates 74 and 75 for clockwise and counterclockwise rotation of the stepping motor 28 for ribbon W-l, respectively.
  • the outputs from these gates are both connected to the input of a translator 76 of known design which produces a rotation of the stepping motor 28 proportional to the number of input pulses it receives from either gate 74 or gate 75 and in a direction determined by whether these pulses are received from the clockwise gate 74 or the counterclockwise gate 75.
  • the output line 73 of gate 72 is also connected to the serial n1 entry input terminal 60 of the 2E +2 Ek counter 52. This connection is made through a divider 77, which divides by two the number of pulses coming from the gate 72..The reason for this is to match the resolution of the count stored in-counter 52 to the correction provided by each stepping motor pulse.
  • the correction pulses from gate 72 which are applied through the divider 77 cause the counter 52 to count down toward zero from the count stored therein.
  • the coincidence circuit 78 applies a pulse to its output line 80 to open the clockwise gate 74 and also to energize the count down control terminal 59 of counter 52.
  • the coincidence circuit 78 applies a pulse to its output line 81 to open the counterclockwise gate 75 and also to energize the count up control terminal 58 of counter 52.
  • the register mark detection circuit 82 is part of the gate circuitry 35 in FIG. 3.
  • This detection circuit receives an input pulse from the photoelectric sensor 29 for ribbon W-l via input line 30 in response to the sensors detection of a registration mark on this ribbon. This happens once during each revolution of the perforating cylinders, i.e., once for each printed impression on the web.
  • This input pulse causes the register mark detection circuit 82 to maintain a logic 1 condition via its output line 47 to open the gate 72. If no registration mark on the ribbon W-l is detected during a given cycle of operation, line 47 will go to logic 0 and the gate 72 will remain closed, thereby preventing any correction pulses from being 9 applied to the stepping motor 28 for ribbon W-l until after the next registration mark is detected. In addition, if no registration mark is detected, this circuit causes transfer of a relay Contact which is used to lock up the constant tension roller 16 for ribbon W-l.
  • gate circuit 35 forms a window pulse as was described earlier. During this window period, gate circuit 35 produces a signal on its output line 47 which causes gate 72 to close.
  • the maximum advance or retardation of the ribbon which the stepping motor will be permitted to provide is 0.05 inch per impression. In this embodiment, for the particular gearing ratios used with the stepping motor, this maximum advance or retardation would require 59 correction pulses per impression to the stepping motor.
  • correction pulses are applied to the stepping motor 28 for ribbon W-l only during the major portion of each cycle outside the window period shown at line c of the FIG. 3 pulse timing chart. Since this window period occupies no more than 4/240 of each cycle, only one of each 60 pulses per cycle appearing on line 71 in FIG. 4 will be blocked by gate 72 during the window period. Assuming that gate 72 is reopened by the detection of a register mark and by a large misregister error, the remaining 59 pulses for this cycle will pass through gate 72 to line 73. Consequently, the translator 76 for the stepping motor 28 can receive as many as 59 pulses'per printed impression if the misregistration exceeds a certain value. The misregistration can be corrected during a given cycle of operation only to the extent of these 59 correction pulses.
  • each bidirectional counter 51 and 52 is similarly limited, preferably.
  • each counter may be limited to a maximum count of plus or minus 62. If the counter is instructed to count beyond this, it simply stops counting and holds the maximum count which it is capable of accepting. Consequently, if there is a very large misregistration, the stepping motor 28 will run at its maximum rate of 59 correction pulses per second for enough impressions until the error is reduced enough to bring the count in counter 52 below the maximum number. This feature minimizes the overshoot which would otherwise occur if the counter capacity were not limited to approximately match the maximum correction per impression.
  • control nip for each of the other ribbons W-2, W-3 and W4 is provided with an individual stepping motor 28-2, 28-3 and 284. Each of these stepping motors is controlled individually by a control nip velocity correction computer' identical to that just described in detail with reference to FIG. 4.
  • variable phase reference pulse generator 33 is controlled by the perforating cylinder 25 such that at a predetermined rotational position of the perforating cylinder 25 it causes the variable phase pulse generator 33 to deliver an output pulse via line 32 to the respective control nip correction computers for the individual ribbons.
  • the phase relationship of the variable phase reference pulse generator 33 with respect to the position of the perforating cylinder may be modified by a stepping motor 128 (FIG. 2).
  • the stepping motor 128 can either advance or retard the timing of the reference pulse produced by variable phase pulse generator 33. as explained hereinafter.
  • phase correction computer 131 which is similar in many respects to the already-described ribbon nip correction computer 31.
  • Corresponding elements of the phase correction computer 131 are given the same reference numerals plus as the elements of the ribbon nip correction computer 31, and the complete description of these elements will not be repeated.
  • each of the individual ribbon nip correction computers 31 is to regulate the individual ribbon nip velocity so that the registration mark on each ribbon will appear at the nip at the correct time with respect to the rotational position of the perforating blade 26. This should bring the corresponding registration marks on the several ribbons into synchronism with each other at the individual ribbon nips, and they should be in precise registration with each other when they reach the perforating cylinders.
  • phase correction of the reference pulse generator 33 will be performed:
  • the phase correction computer 131 is controlled by a photoelectric sensor 129 which senses the registration mark on the ribbon W-4 as the gathered ribbons pass from the gathering cylinders 22, 23 toward the perforating cylinders 24, 25.
  • the sensor 129 is located as close as possible to the perforating cylinders.
  • the phase correction computer 131 includes a gate circuit 135 similar to the already-described gate circuit 35 in the ribbon nip correction computer 31. Gate circuit 135 is connected to the registration mark sensor 129 through line 130.
  • This portion of the system includes a fixed phase pulse generator which provides one reference pulse per revolution of the perforating cylinders 24, 25.
  • the encoder 36 delivers to its output line 142 a single pulse whose timing is dependent entirely upon the rotational position of the perforating cylinder 25, such that this fixed phase reference pulse will always occur at the same instant during each revolution of the perforating cylinders.
  • This fixed phase reference pulse is applied to the reference terminal 143 of gate circuit 135.
  • the already-mentioned analog-to-digital converter 36 is driven by the perforating cylinder to produce a single pulse each revolution on line 137 and 240 pulses per revolution on 138.
  • the timing of the pulses on lines 137 and 138 can be adjusted withrespect to the rotational position of the cutoff cylinder 25. Consequently, the pulses on lines 137 and 138 will be referred to as variable phase pulses.
  • Line 137 is connected to a control terminal 139 of gate circuit 135 to begin the window period of gate 135 at a predetermined time during each cycle of operation. while the unprinted space between the printed areas on each ribbon is passing the perforating cylinder sensor 129.
  • Line 138 is connected to the input termipal 2 00 of a counter 201 which delivers a window close' puls'e to the control terminal 140 of gate circuit 135 in response to the fourth pulse on line 138 following the window open pulse on line 137.
  • the already-mentioned DC tachometer 44 and the voltageto-frequency converter 45 cause high frequency output pulses to be applied to the input terminal 146 of gate circuit 135.
  • the pulse frequency is proportional to the speed of the perforating cylinders which, as already explained, is proportional to the press speed.
  • the fixed phase reference pulse on line 142 will occur during this window period.
  • the time difference between the occurrence of the fixed phase reference pulse at terminal 143 of gate circuit 135 and the occurrence of the registration mark pulse on line 130 produces the error period during which the gate circuit 135 passes the error signal pulses coming from the voltage-to-frequency converter 45.
  • the number of error pulses passed by the gate circuit 135 depends upon the time dif ference between the fixed phase reference pulse on line 142 and the registration mark pulse on line 130, as well as upon the press speed. Consequently, the number of error pulses passed by the gate circuit 135 is a measure of the distance error or misregistration of the registration mark on ribbon W- 4 as the gathered ribbons pass between the perforating cylinders.
  • Gate 172 is under the control of a counter 202 which receives, via line 148, the error signal pulse output from gate circuit 135.
  • the pulse output from counter 202 goes into a latch device 203 having its output connected via line 204 to the gate 172. If during any cycle of operation the error pulse input to the counter is less than 6, the latch 203 will maintain gate 172 closed. However, if the error pulse count is 6 or more, the latch 203 will apply a gate-opening signal to line 204. This insures that gate 172 will open only if the misregistration is in excess of a predetermined tolerable minimum value, corresponding to 6 error pulses.
  • the counter 202 is reset to zero and the latch 203 is reset to its normal gate-closing condition once during each cycle of operation, when the single encoder'pulse appears on line 137, which is connected to a reset control-terminal205 of counter 202 and to a reset control terminal 206 oflatch 203.
  • gate, 172 is alsounder the control of line 147, which receives a gate-opening-signal during each cycle of operation only if the registration mark-on the ribbon has been detected by sensor 129. 1
  • gate 172 will be opened only if a gate-opening signal appears on linei-1.4-7,anda gate-opening signal appears on line 204. lfeither gateopeningsign al doesnot occur. then gate 172 will not open during that revolution of the cutoffcylinders.
  • gate 172 is controlled by a decade counter 207 having its input connected to the single pulse per cycle output line 137 from encoder 36.
  • the decade counter 207 delivers a gate-opening signal via its output line 208 to gate 172 once for every 10 input pulses which it receives from line 137-that is, only for one out of 10 cycles of operation (or revolutions) of the perforating cylinders 24, 25. Consequently, gate 172 can be opened only once in every 10 cycles, and even then it will be opened only if a registration mark has been detected (producing a gate-opening signal on line 147) and the error signal pulse count exceeds a predetermined minimum value (producing a gate-opening signal on line 204).
  • the input pulse for the motor 128 is delivered to gate 172 from counter 20].
  • the signal input to counter 201 is the variable phase 240 pulse per cycle signal on line 138.
  • the output of counter 201 is connected to a latch device 209, which passes this stepping motor pulse to the gate 172 after the sixth.- count on line 138 in each cycle of operation, which will be shortly after the end of the window period.
  • Counter 201 and latch 209 are both reset once each cycle by the single pulse appearing on line 137. I v
  • the single correction pulse passed by gate 172 is applied to the translator 176 for stepping motor 128 either through gate 174 or through gate 175, depending upon whether the misregistration is leading or lagging.
  • This correction pulse causes the stepping motor 128 to either advance or retard the timingof the variable phase reference pulse produced by the pulse generator 33, in the following manner:
  • the shaft of the encoder 36 carries a disc 211 having alternate opaque and transparent regions. This disc is positioned between one or more light sources 212 and photoelectric sensors 213 carried by a drum 214 which is attached to the shaft 229 of the stepping motor 128.
  • the sensors 213 are connected to lines 137 and 138 to deliver, respectively, 1 pulse per cycle of the perforating cylinders 24, 25 and 240 pulses per cycle.
  • the drum 214 Normally (i.e., in the absence of an input pulse to the stepping motor 128), the drum 214 is stationary, so that the light source or sources 212 and the photoelectric sensors 213 have fixed positions and the 1 pulse per cycle on line 137 and the 240 pulses per cycle on line 138 will occur at fixed times during the revolution of the perforating cylinder 25.
  • a pulse input to the stepping motor 128 will turn the drum 214 so as to change the positions of the light source 212 and sensors 213, thereby changing the timing, or phase relationship, of the pulses on lines 137 and 138 with respect to the cyclic operations of the perforating cylinders.
  • the beginning and the end of the window period for gate circuit in the phase correction computer 31a can be varied in time, with respect to the rotation of the perforating cylinders.
  • the pulse output lines 37 and 38 for the individual control nip correction computers 31 are also connected to the photoelectric sensors 213, so that the timing or phase relationship of the pulses on these lines can be varied with respect to the cyclic operation of the perforating cylinders 24, 25. Therefore, the timing of the beginning and the end of'the window period for the gate circuit 35 (FIG. 2) in the correction computer for each ribbon control nip will be changed in acv.ordarice with the correction provided by the stepping motor 528 in response to the detection of a positional error of the gathered ribbons just before they pass between the perforating cylinders.
  • the adjustment of the timing of the pulses appearing on line 38 varies the timing of the reference pulse (line d of the HQ 3 pulse timing charts) whose leading edge occurs midway during the window period. Since the time difference between this reference pulse and the register mark pulse determines the error period for the ribbon control nip in that cycle of operation, it will be evident that the phase (or timing) adjustment provided by the stepping motor 128 provides a correction for the velocity of each ribbon control nip in response to the detected misregistration of the gathered ribbons just before they pass between the perforating cylinders.
  • a registration control system for a web member passing through a control nip and from there into a cyclically operated mechanism comprising:
  • variable speed drive means operatively associated with the control nip to control its velocity
  • sensing means operatively associated with the web member for sensing any positional error of the advancing web member with respect to the cyclic operation of said mechanism
  • variable speed drive means operatively associated with said variable speed drive means to vary the speed of the control nip substantially in accordance with an error factor equal to where E, is the detected positional error of the web member in the present cycle of operation of said mechanism;
  • n-l and 2 E is the summation of the positional errors of the web member in previous cycles of operation.
  • said correction means comprises a first counter for -1 maintaining a count of 2 iEk a second counter for receiving a count of 2E during each cycle ofoperation of said cyclically operated mechanism and for receiving the count stored in said first counter, and means for resetting said second counter after each cycle of operation of said cyclically operated mechanism.
  • a registration control system for a plurality of printed web ribbons passing through respective individual control nips and from there into superimposed relationship and thereafter into a cyclically operated mechanism comprising:
  • variable speed drive means operatively associated individually with the respective control nips to control individually the velocity of each control nip; sensing means operatively associated individually with each web ribbon for sensing any positional error of the advancing ribbon with respect to the cyclic operation of said mechanism;
  • correction means operatively associated with each variable speed drive means individually to vary the speed of the respective control nip substantially in accordance with an error factor equal to where E is the detected positional error of the respective ribbon in the present cycle of operation of said mechanism,
  • variable speed drive means for each control nip comprises a differential and a stepping motor for varying the output speed of the differential in accordance with the energization of the stepping motor.
  • a registration control system wherein said correction means comprises a first counter for maintaining a count of a second counter for length which are separated by spaces having a register mark therein, said control system comprising:
  • a plurality of pairs of confronting rollers providing control nips for the respective web ribbons
  • variable speed drive means operatively associated individually with each control nip to control the latter's velocity
  • Means operatively associated individually with each web ribbon ahead of the respective control nip therefor for maintaining a substantially constant tension on said web ribbon;
  • sensing means positioned near each control nip for sensing the movement past it of each register mark on the respective web ribbon and for producing a register mark pulse in response to said sensing of a register mark;
  • a cyclically operated mechanism located after said gathering cylinders and operatively associated with the superimposed web ribbons to act on the latter at said spaces between the printed impressions;
  • correction means operated by said last-mentioned means and operatively associated with each control nip drive means individually to vary the speed of the respective control nip substantially in accordance with an error factor equal to the positional errors of the register marks on the respective ribbon in previous cycles of operation.
  • a registration control system comprising a first counter connected to receive E, error pulses during each cycle of operation and operative to maintain a count of the summation of all the error pulses for previous cycles of operation, a second counter for receiving during each cycle of operation both the count stored in the first counter at the end of the preceding cycle of operation and 2E,, error pulses for the present cycle of operation, and means for resetting said second counter at the end of each cycle of operation.
  • a registration control system wherein said first and second counters receive their respective counts during the interval in each cycle of operation while said space between successive printed areas on the respective ribbon is moving past said means for sensing the register mark thereon.
  • a registration control system wherein'the correction pulses reduce the count stored in said second counter while a printed area on the respective ribbon is moving past said means for sensing the register mark thereon.
  • a registration control system for a pluralityof printed web ribbons passing through respectiveindividual control nips and from there into superimposed relationship and thereafter into a cyclically operated mechanism comprising:
  • variable speed drive means operatively associated in dividually with the respective control nips to control individually the velocity of each control nip;
  • sensing means operatively associated individually with each web ribbon near the respective control nip for sensing any positional error of the advancing ribbon thereat with i respect to the cyclic operation of said cyclically operated mechanism;
  • correction means controlling each variable speed drive means individually and operable in response to said sensing means to vary the speed of the respective control nip;
  • additional sensing means operatively associated with one of the web ribbons near said cyclically operated mechanism for sensing a positional error of the superimposed ribbons with respect to the cyclic operation of said mechanism;
  • a registration control system wherein said correction means varies the speed of the respective control nip substantially in accordance with an error factor equal to where E is the detected positional error of the respective ribbon in the present cycle of operation of said cutoff n-l mechanism, and 2 )E is the summation of the positional errors of the respective ribbon in previous cycles of operation.
  • a registration control system according to claim 12, and further comprising means for preventing said last-mentioned means from varying the operation of said correction means except during certain cycles of operation of said cyclically operated mechanism.
  • a registration control system according to claim 14, and further comprising means for preventing said means operated by said additional sensing means from varying the operation of said correction means except when said positional error of the superimposed web ribbons exceed a predetermined value.
  • a registration control system for a plurality of printed ribbons passing into superimposed relationship and thereafter into a cyclically operated mechanism comprising:
  • sensing means operatively associated individually with each ribbon for sensing any positional error of the advancing ribbon with respect to the cyclic operation of said mechanism;
  • correction means operatively associated with each ribbon individually for varying the speed of the respective ribbon in accordance with said error factor'which includes a summation of the positional errors of the respective ribbon in previous cycles of operation of said mechanism.
  • each ribbon has a plurality of successive printed areas with spaces therebetween having a registration mark therein, and said sensing means for each ribbon comprises:
  • said last-mentioned means comprises a normally closed gate circuit, means for opening said gate circuit in response to either said register mark pulse or said reference pulse and for closing the gate circuit in response to the other of said pulses, and means for producing a series of pulses whose frequency is proportional tothe speed of said cyclically operated mechanism and for applying said last-mentioned pulses to said gate circuit to pass through the gate circuit while the latter is open.
  • said means for producing a series of pulses comprises a tachometer driven by said cyclically operated mechanism for producing a voltage proportional to the speed of the cyclic operation of said mechanism, and a voltage-to-frequency converter operated by said tachometer to generate said series of pulses at a frequency proportional to the voltage produced by the tachometer.
  • said error factor further includes at least the detected positional error of the respective ribbon in the present cycle of said mechanism
  • said correction means includes a first counter for maintaining a count of the summation of the positional errors of the respective ribbon in previous cycles of operation of said mechanism, a second counter for receiving a count of at least the detected positional error of the respective ribbon in the present cycle of said mechanism during each cycle of operation of said cyclically operated mechanism, and means for resetting said second counter after each cycle of operation of said cyclically operated mechanism.
  • a plurality of rollers operatively associated with each ribbon to control the velocity of the associated ribbon
  • sensing means positioned near each of the respective ribbons for sensing the movement past it of each register mark on the respective ribbon and for producing a register mark pulse in response to said sensing of a register mark;
  • a cyclically operated mechanism located after said gathering cylinders and operatively associated with the superimposed ribbons to act on the latter at said spaces between the printed impressions;
  • correction means operated by said last-mentioned means and operatively associated with said plurality of rollers and each ribbon individually to varythe speed of the respective ribbons substantially in accordance with said error factor which includes the detected positional error of the register mark in the present cycle of operation of said mechanism and the summation of the positional errors of the register marks on the respective ribbon in previous cycles of operation.
  • correction means includes means for providing during each cycle of operation of said cyclically operated mechanism a series of correction pulses proportional to the speed of the cyclic operation of said mechanism and the timing difference between said registration mark pulse and said reference pulse. and means for changing the speed of the respective ribbon in accordance with the number of-said correction pulses.
  • a registration control system according to claim 22. wherein said means for providing the correction pulses includes a normally closed gate circuit, means for opening said gate circuit in response to either said register mark pulse or said reference pulse and for closing the gate circuit in response to the other of said pulses, and means for generating a series of pulses whose frequency is proportional to the speed of said cyclically operated mechanism and for applying said last-mentioned pulses to said gate circuit to pass through the gate circuit while the latter is open.
  • a registration control system according to claim 23, wherein said last-mentioned means comprises a tachometer driven by said cyclically operated mechanism for producing a voltage proportional to the speed of the cyclic operation of said mechanism. and a voltage-to-frequency converter operated by said tachometer to generate said series of pulses at a frequency proportional to the voltage produced by the tachometer.
  • a registration control system according to claim 21, and further comprising means for varying the timing of said reference pulse with respect to the cyclic operation of said mechanism in accordance with a detected positional error of one of the gathered ribbons.
  • a registration control system according to claim 21, and wherein said last-mentioned means is operative during only certain of the operating cycles of said mechanism.
  • a registration control system according to claim 21, and further comprising:
  • additional sensing means between said gathering cylinders and said cyclically operated mechanism for sensing the movement past it'of a register mark on one of the superimposed ribbons and for'producing a register mark pulse in response to said sensing of said register mark; and means for comparing the timing of said last-mentioned register mark pulse anda fixed phase reference pulse produced in the corresponding cycle of operation of said mechanism to indicate the positional error of the gathered ribbons with respect to said mechanism.
  • a registration control system comprising means for providing error pulses during each cycle of operation of said cyclically operated mechanism, said means for determining an error factor including a first counter connected to receive error pulses corresponding to the detected positional error of the register mark on the respective ribbon during the present cycle of operation of said mechanism during each cycle of operation and operative to maintain a count of the summation of all the error pulses for previous cycles of operation, a second counter for receiving during each cycle of operation both the count stored in the first counter at the end of the preceding cycle of operation and error pulses corresponding to at least the detected positional error of the register mark on the respective ribbon for the present cycle of operation, and means for resetting said second counter at the end of each cycle of operation.
  • a registration control system according to claim 2
  • a cyclically operated mechanism located after said gathering cylinders and operatively associated with the superimposed web ribbons to act on the latter at said spaces between the printed impressions;
  • correction means operated by said last-mentioned means and operatively associated with each control nip drive means individually to vary the speed of the respective control nip as a function of the detected positional error of the register mark on the respective ribbon,
  • a registration control system according to claim 31. and further comprising means for'preventing said last-mentioned means from changing the timing of said last-mentioned reference pulses with respect to the cyclic operation of said further comprising means for preventing the variation of the timing of said reference pulses with respect to the cyclic r operation of said mechanism except when said positional error of the'gathered ribbons'exceeds a predetermined value.
  • a registration control system for registering a plurality 'of ribbons relative to a cyclically operated mechanism, said system comprising means for providing a first reference signal having a predetermined relationship with a cycle of operation otfth' 'e mechanism, sensor means for providing a plurality of registration signals each'of which is associated with one of the ribbons when the associated ribbons is in a predetermined position relative to the mechanism, first control means for des.
  • a registration control system as se't forth in claim 35 wherein said first control 'meansaincludesta plurality control nips each of which is for operating on an associated one of the ribbons, said sensor means includingl'fttst sensor"elements each of which is associated with one' ofthe' ribbons and is operable provide a registration signal which' sa'ijdfirst control means relates to said first referencosignal to detect error in the position of the associated ribbon '-'atelative*to the mechanism and a second sensor element which is associated with one of the ribbons at a location along the ribbon which is closer to the mechanism than said control nips, said second sensor element being operable to provide a registration signal which said second control means relates to said second reference signal to detect error in the position of the ribbon which said second sensor element is associated after this ribbon has passed through an associated one of said control nips.
  • said first control means further includes variable speed drive 2 .means operatively associated with said control nips for individually controllingthe velocity of the ssociated ribbons at each of said controlnips and correction r n ans operatively associated with said variable speed drive means to individually vary the speed of said control nips substa n ally in accordance with an error factor equal to where E, is the detected error in the position a ribbon in the 1-1 present cycle of operation of the mechanism, and k UNITED STATES QFFICE CERTIFICATE OF CORRECTION Patent No. 3,556,509 Dated January 19, 1971 Inventor(s) James m It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
US754196A 1968-08-21 1968-08-21 Printed web ribbon registration control system Expired - Lifetime US3556509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75419668A 1968-08-21 1968-08-21

Publications (1)

Publication Number Publication Date
US3556509A true US3556509A (en) 1971-01-19

Family

ID=25033816

Family Applications (1)

Application Number Title Priority Date Filing Date
US754196A Expired - Lifetime US3556509A (en) 1968-08-21 1968-08-21 Printed web ribbon registration control system

Country Status (4)

Country Link
US (1) US3556509A (enrdf_load_stackoverflow)
JP (1) JPS495282B1 (enrdf_load_stackoverflow)
DE (1) DE1942444A1 (enrdf_load_stackoverflow)
FR (1) FR1604180A (enrdf_load_stackoverflow)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3734487A (en) * 1970-12-31 1973-05-22 Harris Intertype Corp Automatic ribbon associating apparatus
US3774016A (en) * 1971-10-04 1973-11-20 Sun Chemical Corp Control of process according to registration indicia on material being processed
US3858777A (en) * 1972-05-17 1975-01-07 Xerox Corp Printing apparatus including registration control
US3991992A (en) * 1975-04-24 1976-11-16 Xerox Corporation Photoelectrophoretic web machine servo drive system
US4264957A (en) * 1979-05-23 1981-04-28 Zerand Corporation Apparatus and method for register control in web processing apparatus
US4361260A (en) * 1980-06-27 1982-11-30 Hanlan Marc A Web registration control
US4403718A (en) * 1980-10-17 1983-09-13 Taiyo Shokai Co., Ltd. Method and apparatus for automatically controlling travel of two plastics film strips as a bag material or the like
US4406389A (en) * 1981-06-11 1983-09-27 Burroughs Corporation High speed web processing unit adjustable to variable length documents
US4482972A (en) * 1981-06-25 1984-11-13 Lewis Clarence A Distance sensing apparatus and method
US4542893A (en) * 1984-11-14 1985-09-24 Bell & Howell Company Overlapping document strip conveying method and apparatus
US4570916A (en) * 1984-11-14 1986-02-18 Bell & Howell Company Document conveying method and apparatus
WO1988003119A1 (en) * 1986-10-27 1988-05-05 Adolph Coors Company Phasing control system for web having variable repeat length portions
US4757930A (en) * 1986-08-29 1988-07-19 Adolph Coors Company Web indicia reference signal generating system
US5048810A (en) * 1990-11-19 1991-09-17 Harris Graphics Corporation Apparatus for adjusting an anglebar or a compensator roller in a folder of a printing press
US5104104A (en) * 1990-12-19 1992-04-14 Pitney Bowes Inc. Web processing apparatus
US5129568A (en) * 1990-01-22 1992-07-14 Sequa Corporation Off-line web finishing system
US5224640A (en) * 1990-01-22 1993-07-06 Sequa Corporation Off-line web finishing system
US5348278A (en) * 1993-02-16 1994-09-20 Moore Business Forms, Inc. Paper web separator and guiding apparatus
US5573231A (en) * 1993-12-15 1996-11-12 Albert-Frankenthal Aktiengesellschaft Folding apparatus
US5695180A (en) * 1995-05-05 1997-12-09 Maschinenfabrik Wifag Device for conveying a front end of a material web in a web-fed rotary press
US6684776B2 (en) * 2001-02-23 2004-02-03 Heidelberger Druckmaschinen Ag Method and apparatus for determining slipping in a nip roller
US20040026056A1 (en) * 2000-05-17 2004-02-12 Joseph Schweiger Method and device for the merging of different paper webs
US20040180771A1 (en) * 2003-03-13 2004-09-16 Winkler + Dunnebier Aktiengesellschaft Method and device for producing envelopes and other enclosed packaging
US20060032884A1 (en) * 2004-08-11 2006-02-16 Giro Gh, S.A. Method for the movement of superimposed bands of flexible material
US7114422B1 (en) * 1999-06-02 2006-10-03 Lts Lohmann Therapie-Systeme Ag Method and device for producing a product made of strip tape, especially a medical product and/or a product containing active substances as well as fillable receptacles or pouches whose edges can be sealed
US7178458B1 (en) * 2002-07-15 2007-02-20 Thomas P Bates Method of making transfer printed webbing
US20090176008A1 (en) * 2006-04-27 2009-07-09 Sca Hygiene Products Ab Method and arrangement for synchronized positioning of at least one essentially continuous material web
CZ300714B6 (cs) * 2000-05-17 2009-07-22 Saint-Gobain Isover Zpusob a zarízení pro vytvárení a balení izolacních plstí z vláknitých materiálu
CN101400328B (zh) * 2006-04-27 2012-05-09 Sca卫生产品股份公司 在同步定位至少一个基本连续材料织物中使用的、用于检测同步标记的方法和装置
US20150343827A1 (en) * 2013-01-30 2015-12-03 Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd. Printing device, bookbinding device, and printing/bookbinding system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6147262A (ja) * 1984-08-13 1986-03-07 Mitsubishi Heavy Ind Ltd 輪転印刷機における走行紙の張力制御方法
DE4012396A1 (de) * 1990-04-19 1991-10-31 Roland Man Druckmasch Druckmaschinenanlage
DE4037728C1 (enrdf_load_stackoverflow) * 1990-11-27 1992-06-25 Eltromat Gesellschaft Fuer Industrie-Elektronik Mbh, 4817 Leopoldshoehe, De
DE19650803A1 (de) * 1996-12-06 1998-06-10 Ravenstein Gmbh Maschf Längenanpassung von Abschnittslängen von Druckbahnen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873117A (en) * 1955-04-01 1959-02-10 Crosfield J F Ltd Register control of moving webs
US3097844A (en) * 1959-09-17 1963-07-16 William F Huck Automatic web register controls
US3280737A (en) * 1963-06-13 1966-10-25 William F Huck Web registering system for multi-unit presses
US3326436A (en) * 1966-08-19 1967-06-20 William F Huck Web registering and tension control system for multi-unit presses

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873117A (en) * 1955-04-01 1959-02-10 Crosfield J F Ltd Register control of moving webs
US3097844A (en) * 1959-09-17 1963-07-16 William F Huck Automatic web register controls
US3280737A (en) * 1963-06-13 1966-10-25 William F Huck Web registering system for multi-unit presses
US3326436A (en) * 1966-08-19 1967-06-20 William F Huck Web registering and tension control system for multi-unit presses

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3734487A (en) * 1970-12-31 1973-05-22 Harris Intertype Corp Automatic ribbon associating apparatus
US3774016A (en) * 1971-10-04 1973-11-20 Sun Chemical Corp Control of process according to registration indicia on material being processed
US3858777A (en) * 1972-05-17 1975-01-07 Xerox Corp Printing apparatus including registration control
US3991992A (en) * 1975-04-24 1976-11-16 Xerox Corporation Photoelectrophoretic web machine servo drive system
US4264957A (en) * 1979-05-23 1981-04-28 Zerand Corporation Apparatus and method for register control in web processing apparatus
US4361260A (en) * 1980-06-27 1982-11-30 Hanlan Marc A Web registration control
US4403718A (en) * 1980-10-17 1983-09-13 Taiyo Shokai Co., Ltd. Method and apparatus for automatically controlling travel of two plastics film strips as a bag material or the like
US4406389A (en) * 1981-06-11 1983-09-27 Burroughs Corporation High speed web processing unit adjustable to variable length documents
US4482972A (en) * 1981-06-25 1984-11-13 Lewis Clarence A Distance sensing apparatus and method
US4542893A (en) * 1984-11-14 1985-09-24 Bell & Howell Company Overlapping document strip conveying method and apparatus
US4570916A (en) * 1984-11-14 1986-02-18 Bell & Howell Company Document conveying method and apparatus
US4757930A (en) * 1986-08-29 1988-07-19 Adolph Coors Company Web indicia reference signal generating system
US4781317A (en) * 1986-08-29 1988-11-01 Adolph Coors Company Phasing control system for web having variable repeat length portions
WO1988003119A1 (en) * 1986-10-27 1988-05-05 Adolph Coors Company Phasing control system for web having variable repeat length portions
US5129568A (en) * 1990-01-22 1992-07-14 Sequa Corporation Off-line web finishing system
US5224640A (en) * 1990-01-22 1993-07-06 Sequa Corporation Off-line web finishing system
US5361960A (en) * 1990-01-22 1994-11-08 Sequa Corporation Off-line web finishing system with splice and missing mark stability
US5048810A (en) * 1990-11-19 1991-09-17 Harris Graphics Corporation Apparatus for adjusting an anglebar or a compensator roller in a folder of a printing press
US5104104A (en) * 1990-12-19 1992-04-14 Pitney Bowes Inc. Web processing apparatus
US5374042A (en) * 1993-02-16 1994-12-20 Moore Business Forms, Inc. Paper web separator and deflector
US5348278A (en) * 1993-02-16 1994-09-20 Moore Business Forms, Inc. Paper web separator and guiding apparatus
US5573231A (en) * 1993-12-15 1996-11-12 Albert-Frankenthal Aktiengesellschaft Folding apparatus
US5695180A (en) * 1995-05-05 1997-12-09 Maschinenfabrik Wifag Device for conveying a front end of a material web in a web-fed rotary press
US8616101B2 (en) 1999-06-02 2013-12-31 Lts Lohmann Therapie-Systeme Ag Process and device for manufacturing a product from strip tape, especially for manufacturing a medicinal and/or active substance-containing product as well as fillable containers or sealed-margin bags
US7114422B1 (en) * 1999-06-02 2006-10-03 Lts Lohmann Therapie-Systeme Ag Method and device for producing a product made of strip tape, especially a medical product and/or a product containing active substances as well as fillable receptacles or pouches whose edges can be sealed
US20060288830A1 (en) * 1999-06-02 2006-12-28 Detlev Neuland Process and device for manufacturing a product from strip tape, especially for manufacturing a medicinal and/or active substance-containing product as well as fillable containers or sealed-margin bags
US20060288834A1 (en) * 1999-06-02 2006-12-28 Detlev Neuland Process and device for manufacturing a product from strip tape, especially for manufacturing a medicinal and/or active substance-containing product as well as fillable containers or sealed-margin bags
US7370563B2 (en) 1999-06-02 2008-05-13 Lts Lohmann Therapie-Systeme Ag Process and device for manufacturing a product from strip tape, especially for manufacturing a medicinal and/or active substance-containing product as well as fillable containers or sealed-margin bags
CZ300714B6 (cs) * 2000-05-17 2009-07-22 Saint-Gobain Isover Zpusob a zarízení pro vytvárení a balení izolacních plstí z vláknitých materiálu
US20040026056A1 (en) * 2000-05-17 2004-02-12 Joseph Schweiger Method and device for the merging of different paper webs
US6684776B2 (en) * 2001-02-23 2004-02-03 Heidelberger Druckmaschinen Ag Method and apparatus for determining slipping in a nip roller
US7178458B1 (en) * 2002-07-15 2007-02-20 Thomas P Bates Method of making transfer printed webbing
US20040180771A1 (en) * 2003-03-13 2004-09-16 Winkler + Dunnebier Aktiengesellschaft Method and device for producing envelopes and other enclosed packaging
US7850157B2 (en) * 2004-08-11 2010-12-14 Girnet Internacional, S.L. Method for the movement of superimposed bands of flexible material
US20060032884A1 (en) * 2004-08-11 2006-02-16 Giro Gh, S.A. Method for the movement of superimposed bands of flexible material
US20090176008A1 (en) * 2006-04-27 2009-07-09 Sca Hygiene Products Ab Method and arrangement for synchronized positioning of at least one essentially continuous material web
US8168254B2 (en) 2006-04-27 2012-05-01 Sca Hygiene Products Ab Method and arrangement for synchronized positioning of at least one essentially continuous material web based on a virtual master function
CN101400328B (zh) * 2006-04-27 2012-05-09 Sca卫生产品股份公司 在同步定位至少一个基本连续材料织物中使用的、用于检测同步标记的方法和装置
CN101405209B (zh) * 2006-04-27 2012-11-28 Sca卫生产品股份公司 用于同步定位至少一个基本连续材料织物的方法和装置
US20150343827A1 (en) * 2013-01-30 2015-12-03 Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd. Printing device, bookbinding device, and printing/bookbinding system

Also Published As

Publication number Publication date
FR1604180A (enrdf_load_stackoverflow) 1971-07-26
DE1942444A1 (de) 1970-02-26
JPS495282B1 (enrdf_load_stackoverflow) 1974-02-06

Similar Documents

Publication Publication Date Title
US3556509A (en) Printed web ribbon registration control system
US4007866A (en) Web transport arrangement
US4805111A (en) Size independent modular web processing line and modules
US4287797A (en) Device for feeding and adjusting a continuous web and for cutting it into portions
CA1271826A (en) Size independent modular web processing line and modules
US3701464A (en) Circumferential and lateral web registration control system
SU655299A3 (ru) Устройство дл согласовани скоростей приводов
US4955265A (en) Web cutting position control system
US4020406A (en) Web cutting control system
US2994783A (en) Automatic control system for perforating machines and the like
EP0059244B1 (de) Vorrichtung zur Drehzahlerfassung
US4248655A (en) Position control system for a moving web
EP0522640A1 (en) Screen printing device with continuous registering of rotating stencils
GB1034994A (en) Improvements in or relating to register control systems for moving webs
US4482972A (en) Distance sensing apparatus and method
US3195385A (en) Machine for processing linear material
US4289983A (en) Encoder for monitoring bidirectional motion
EP0074165A1 (en) Separation system for continuous wrapping material
JP3068682B2 (ja) ウェブ加工機
US4135118A (en) System for determining the relative angular positions of the rotors of two synchronously driven synchronous motors
US3485492A (en) Control system for a folding machine
US4104723A (en) Method of controlling web cutting
USRE30628E (en) Web cutting control system
US3566782A (en) Address synchronizer
US5003668A (en) Textile spinning machine

Legal Events

Date Code Title Description
AS Assignment

Owner name: HARRIS GRAPHICS CORPORATION MELBOURNE, FL A DE CO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HARRIS CORPORATION;REEL/FRAME:004227/0467

Effective date: 19830429