US3905533A - Apparatus for regulating tension in sheet material - Google Patents

Apparatus for regulating tension in sheet material Download PDF

Info

Publication number
US3905533A
US3905533A US431978A US43197874A US3905533A US 3905533 A US3905533 A US 3905533A US 431978 A US431978 A US 431978A US 43197874 A US43197874 A US 43197874A US 3905533 A US3905533 A US 3905533A
Authority
US
United States
Prior art keywords
tension
sheet
speed
cylinder
cylinders
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
US431978A
Inventor
Louis Corse
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.)
Societe dEtudes de Machines Speciales SA
Original Assignee
Societe dEtudes de Machines Speciales SA
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 Societe dEtudes de Machines Speciales SA filed Critical Societe dEtudes de Machines Speciales SA
Application granted granted Critical
Publication of US3905533A publication Critical patent/US3905533A/en
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
    • B65H23/1888—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 web tension
    • 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
    • B65H23/16—Registering, tensioning, smoothing or guiding webs longitudinally by weighted or spring-pressed movable bars or rollers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B65H2511/112—Length of a loop, e.g. a free loop or a loop of dancer rollers

Definitions

  • the present invention relates to rotary printing apparatus having means for regulating the tension of a sheet of material moving between two cylinders of which one is covered with a flexible material such as rubber.
  • the invention can he applied particularly in a rotary press of the photogravure type.
  • a press of this type consists of a succession of printing stations, at each of which there is a pair of cylinders, i.e. an engraved plate or printing cylinder which is driven in rotation and an impression cylinder of flexible material, parallel and tan gential to the first cylinder and generally freely mounted.
  • the plate cylinder is immersed in a trough of ink while the impression cylinder is pressed against the plate eylinder either manually or by means of pneumatic or hydraulic jacks.
  • the sheet of material has to be tensioned between two successive printing stations.
  • a number of methods may be adapted.
  • the pressure of the impression cylinder is varied, and it presses to a varying extent against the plate cylinder, and according to the force of the pressure and as a result of the deformations undergone by the rubber and the internal tensions in the sheet of material a vermicular sliding action occurs, in such a way that the rate of output decreases in accordance with the increase in pressure.
  • This method is applied by the aid of means situated between each pair of printing stations, which scans the tension of the sheet and which acts accordingly on the pressure of the impression cylinder of the preceding unit of apparatus.
  • This device suffers from a major disadvantage, i.e. from the fact that it does not enable the pressure to be regulated to establish the pressure value desired in order to obtain satisfactory prints.
  • the object of the present invention is to eliminate these drawbacks by providing means for the regulation of the tension of a sheet of material moving between two units of apparatus, particularly of a rotary press of the photogravure type, confining this tension to certain levels not causing any elongations beyond a certain permissible limit.
  • the invention is characterized by the fact that the variation in the tension of the sheet of material, downstream the pair of cylinders, in one sense or in the other in relation to a certain prescribed value. is compensated by effecting a correlative variation in the rotation speed of the said impression cylinder in relation to that of a driven cylinder plate to which it is tangential.
  • a rotary photogravure press (only the elements of which relevant to the invention are depicted) comprises an upstream printing station including an engraved plate cylinder l which runs in a trough of ink 2.
  • This cylinder I is driven by a motor Ia, and coacts with an impression cylinder 3 having a rubber surface to print in one colour on a sheet of material 4 passing between the two cylinders.
  • the sheet 4 passes from the cylinders l and 3 to a downstream printing station in which is passes between a plate cylinder 6 and an impression cylinder 5, so to be printed with a second colour by ink from a separate trough 2.
  • the sheet is tensioned by means 7 including ajockey roller 7b which engages a loop 4 of sheet between two cylinders 7a and 7('.
  • a weight 8 or alternatively a spring or other means, urges the jockey roller downwards to tension the sheet to a desired degree.
  • the impression cylinder 3 is positively driven by a control device 10 powered by the driven plate cylinder 1 for example, via suitable transmission systems. Normally, the cylinders l and 3 rotate at identical speeds.
  • the jockey roller 7b is interconnected by way of a linkage 9 such as a differential or other device consisting of a system of levers 9a on a change speed mechanism 9b interposed in the transmission between the two cylinders.
  • a linkage 9 such as a differential or other device consisting of a system of levers 9a on a change speed mechanism 9b interposed in the transmission between the two cylinders.
  • This speed control device is arranged in such a way that if the tension of the sheet 4 varies in either sense from a preset standard, so that the tensioning device 8 changes in position or shape, in order to balance out the deviation in the tension of the sheet 4, the said device 8 also acts on the speed control device 9!), in order to vary the speed of the impression cylinder 3 slightly with respect to the engraved plate cylinder 1.
  • This change in the speed of the impression cylinder 3 causes in the sheet 4 compensatory tension variations of the opposite sense to those aforementioned.
  • the sheet tension is thereby automatically restored to normal.
  • the cylinder 7b rises and the tensioning device 8 which likewise rises or increases in length, effects a displacement of the system of levers 9a, acting on the speed change mechanism 9b, in such a way that the speed of the impression cylinder 3 of the upstream printing station is increased slightly in relation to that of the driven cylinder 1. This will result in a reduction in the tension downstream of the cylinders l, 3.
  • the sensitivity of this device for adjusting the tension in the sheet 4 is such that a variation in the tension of the latter can never exceed permissible limits, no matter how restricted these may be. It is sufficient to set the tension at the outset to a certain normal initial level for the typeof material of the sheet 4 to be printed, and the device then acts automatically, limiting the tension deviations in the sheet to the permissible limits.
  • the device described above can obviously be constructed in accordance with numerous alternative embodiments within the spirit and scope of the invention as regards, for example, the tensioning device 8, the speed control device 9 or the method of controlling the impression cylinder 3 from the plate cylinder 1 or the main shaft of the machine. These differences in construction. however. do not affect the principle of the invention.
  • means for imprinting an elongate sheet and for delivering the imprinted. elongate sheet comprising a rigid engraved plate cylinder having power means for rotating it at a first speed and a flexible impression cylinder having power means for rotating it at a second speed correlated with said first speed, said cylinders having parallel axes; pressure means for pressing one of the cylinders against the sheet and thereby against the other cylinder; means for maintaining a loop in the delivered sheet; jockey roll means biased for engaging the loop to maintain tension therein and to respond to variations in said tension by movements of the jockey roll means to different positions to compensate said variations in tension; and.
  • control means controlled by the jockey roll means for responding to the movements thereof and for thereby controlling one of the power means to vary one of said speeds relative to the other speed so as to compensate said movements of the jockey roll means; 1 thereby enabling regulation of said tension independently of said pressure means.

Abstract

Tension in sheet material leaving a pair of cylinders of a machine, particularly a rotogravure machine, is regulated by varying the speed of one of the cylinders according to the changes in position of a jockey roller tensioning the sheet.

Description

United States Patent [1 1 Corse 1 Sept. 16, 1975 1 1 APPARATUS FOR REGULATING TENSION IN SHEET MATERIAL [75] lnventor: Louis Corse, Orleans, France [73] Assignee: Societe dEtudes de Machines Speciales, France 221 Filed: Jail. 9, 1974 [21] Appl. No.: 431,978
[30] Foreign Application Priority Data Jan. 11, 1973 France 73.00898 [52] US. Cl 226/44; 101/228 [51 Int. Cl B65h 25/04 [58] Field of Search 226/44, 30, 42, 114, 1;
lOl/DIG. 21, 225, 228
[56] References Cited UNITED STATES PATENTS 2,586,286 2/1952 Andreas 226/44 X 3,087,663 5/1963 Anderson 226/44 3,165,056 l/1965 Hcatlcy 226/42 X 3,587,959 6/1971 G1over..... 226/44 X 3,734,368 5/1973 Kudelski 226/44 Primary ExaminerRichard A. Schacher Alturney, Agent, or FirmRobert E. Burns; Emmanuel J. Lobato; Bruce L. Adams 5 7] ABSTRACT Tension in sheet material leaving a pair of cylinders of a machine, particularly a rotogravure machine, is regulated by varying the speed of one of the cylinders according to the changes in position of a jockey roller tensioning the sheet.
1 Claim, 1 Drawing Figure BACKGROUND OF THE INVENTION The present invention relates to rotary printing apparatus having means for regulating the tension of a sheet of material moving between two cylinders of which one is covered with a flexible material such as rubber. The invention can he applied particularly in a rotary press of the photogravure type. A press of this type consists of a succession of printing stations, at each of which there is a pair of cylinders, i.e. an engraved plate or printing cylinder which is driven in rotation and an impression cylinder of flexible material, parallel and tan gential to the first cylinder and generally freely mounted.
The plate cylinder is immersed in a trough of ink while the impression cylinder is pressed against the plate eylinder either manually or by means of pneumatic or hydraulic jacks.
To ensure-even printing in a rotogravure press the sheet of material has to be tensioned between two successive printing stations. To obtain this tension a number of methods may be adapted.
In a first known method, use is made of plate cylin ders of increasing diameter from the first station of apparatus onwards, in such a Way that the rate of delivery likewise increases from one station to the next, thus ensuring the required tension. This system suffers from a major drawback if the sheet of material is non-ductile,
particularly in the case of annealed aluminium, which is not elastic and which retains a permanent elongation, which should not exceed 1/1000. Now in the case of a whole series of rotogravure units, this value may be considerably exceeded.
In another known method the pressure of the impression cylinder is varied, and it presses to a varying extent against the plate cylinder, and according to the force of the pressure and as a result of the deformations undergone by the rubber and the internal tensions in the sheet of material a vermicular sliding action occurs, in such a way that the rate of output decreases in accordance with the increase in pressure.
This method is applied by the aid of means situated between each pair of printing stations, which scans the tension of the sheet and which acts accordingly on the pressure of the impression cylinder of the preceding unit of apparatus. This device suffers from a major disadvantage, i.e. from the fact that it does not enable the pressure to be regulated to establish the pressure value desired in order to obtain satisfactory prints.
The object of the present invention is to eliminate these drawbacks by providing means for the regulation of the tension of a sheet of material moving between two units of apparatus, particularly of a rotary press of the photogravure type, confining this tension to certain levels not causing any elongations beyond a certain permissible limit.
SUMMARY OF THE INVENTION The invention is characterized by the fact that the variation in the tension of the sheet of material, downstream the pair of cylinders, in one sense or in the other in relation to a certain prescribed value. is compensated by effecting a correlative variation in the rotation speed of the said impression cylinder in relation to that of a driven cylinder plate to which it is tangential.
The essential advantage of such a process and of the device for its performance resides in the fact that it requires no recourse to any action on the parameter consisting of the pressure of the impression cylinder against the sheet of material to be printed. This action remains fully under the control of the printer, who may utilize it for any other regulating operation within the printing process.
DESCRIPTION OF DRAWING The drawing shows a schematic diagram of a machine fitted with the device according to the invention.
DESCRIPTION OF PREFERRED EMBODIMENT Referring to the single figure of the drawing, a rotary photogravure press (only the elements of which relevant to the invention are depicted) comprises an upstream printing station including an engraved plate cylinder l which runs in a trough of ink 2. This cylinder I is driven by a motor Ia, and coacts with an impression cylinder 3 having a rubber surface to print in one colour on a sheet of material 4 passing between the two cylinders. The sheet 4 passes from the cylinders l and 3 to a downstream printing station in which is passes between a plate cylinder 6 and an impression cylinder 5, so to be printed with a second colour by ink from a separate trough 2.
To ensure that the sheet passes satisfactorily between the two printing stations, and the printed images register with each other, the sheet is tensioned by means 7 including ajockey roller 7b which engages a loop 4 of sheet between two cylinders 7a and 7('. A weight 8, or alternatively a spring or other means, urges the jockey roller downwards to tension the sheet to a desired degree.
The impression cylinder 3 is positively driven by a control device 10 powered by the driven plate cylinder 1 for example, via suitable transmission systems. Normally, the cylinders l and 3 rotate at identical speeds.
The jockey roller 7b is interconnected by way of a linkage 9 such as a differential or other device consisting of a system of levers 9a on a change speed mechanism 9b interposed in the transmission between the two cylinders.
This speed control device is arranged in such a way that if the tension of the sheet 4 varies in either sense from a preset standard, so that the tensioning device 8 changes in position or shape, in order to balance out the deviation in the tension of the sheet 4, the said device 8 also acts on the speed control device 9!), in order to vary the speed of the impression cylinder 3 slightly with respect to the engraved plate cylinder 1.
This change in the speed of the impression cylinder 3 causes in the sheet 4 compensatory tension variations of the opposite sense to those aforementioned. The sheet tension is thereby automatically restored to normal. For example, if the tension of the sheet 4, between the jockey cylinder 71; and the downstream printing station undergoes a slight increase, the cylinder 7b rises and the tensioning device 8 which likewise rises or increases in length, effects a displacement of the system of levers 9a, acting on the speed change mechanism 9b, in such a way that the speed of the impression cylinder 3 of the upstream printing station is increased slightly in relation to that of the driven cylinder 1. This will result in a reduction in the tension downstream of the cylinders l, 3. In consequence of this action the jockey roller 7b once again drops and moves the tensioning device 8, the levers 9a and the speed variator 9b in the opposite direction. Equilibrium is thus re-established. the tension in the sheet 4 being again restored to the preset standard. The operation obviously takes place in the converse direction. again restoring the equilibrium and the normal tension in the sheet 4. when the tension between the jockey roller 7/; and the downstream printing station decreases. the jockey cylinder 7h falling.
, The sensitivity of this device for adjusting the tension in the sheet 4 is such that a variation in the tension of the latter can never exceed permissible limits, no matter how restricted these may be. It is sufficient to set the tension at the outset to a certain normal initial level for the typeof material of the sheet 4 to be printed, and the device then acts automatically, limiting the tension deviations in the sheet to the permissible limits.
As the device to which the invention relates does not regulate the tension by varying the pressure P of the impression cylinder 3 on the plate cylinder 1, variation in this pressure can be effected by pressure control means P a independent of speed control means gb, 10. Such variation remains totally within the control of the user ofthe machine, who can accordingly regulate the printing conditions in the most satisfactory possible manner.
The device described above can obviously be constructed in accordance with numerous alternative embodiments within the spirit and scope of the invention as regards, for example, the tensioning device 8, the speed control device 9 or the method of controlling the impression cylinder 3 from the plate cylinder 1 or the main shaft of the machine. These differences in construction. however. do not affect the principle of the invention.
i claim:
1. In a printing system: means for imprinting an elongate sheet and for delivering the imprinted. elongate sheet, comprising a rigid engraved plate cylinder having power means for rotating it at a first speed and a flexible impression cylinder having power means for rotating it at a second speed correlated with said first speed, said cylinders having parallel axes; pressure means for pressing one of the cylinders against the sheet and thereby against the other cylinder; means for maintaining a loop in the delivered sheet; jockey roll means biased for engaging the loop to maintain tension therein and to respond to variations in said tension by movements of the jockey roll means to different positions to compensate said variations in tension; and. control means controlled by the jockey roll means for responding to the movements thereof and for thereby controlling one of the power means to vary one of said speeds relative to the other speed so as to compensate said movements of the jockey roll means; 1 thereby enabling regulation of said tension independently of said pressure means.

Claims (1)

1. In a printing system; means for imprinting an elongate sheet and for delivering the imprinted, elongate sheet, comprising a rigid engraved plate cylinder having power means for rotating it at a first speed and a flexible impression cylinder having power means for rotating it at a second speed correlated with said first speed, said cylinders having parallel axes; pressure means for pressing one of the cylinders against the sheet and thereby against the other cylinder; means for maintaining a loop in the delivered sheet; jockey roll means biased for engaging the loop to maintain tension therein and to respond to variations in said tension by movements of the jockey roll means to different positions to compensate said variations in tension; and control means controlled by the jockey roll means for responding to the movements thereof and for thereby controlling one of the power means to vary one of said speeds relative to the other speed so as to compensate said movements of the jockey roll means; thereby enabling regulation of said tension independently of said pressure means.
US431978A 1973-01-11 1974-01-09 Apparatus for regulating tension in sheet material Expired - Lifetime US3905533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7300898A FR2214294A5 (en) 1973-01-11 1973-01-11

Publications (1)

Publication Number Publication Date
US3905533A true US3905533A (en) 1975-09-16

Family

ID=9113144

Family Applications (1)

Application Number Title Priority Date Filing Date
US431978A Expired - Lifetime US3905533A (en) 1973-01-11 1974-01-09 Apparatus for regulating tension in sheet material

Country Status (8)

Country Link
US (1) US3905533A (en)
BE (1) BE809504A (en)
DE (1) DE2400989B2 (en)
FR (1) FR2214294A5 (en)
GB (1) GB1457593A (en)
IT (1) IT1006778B (en)
LU (1) LU69135A1 (en)
NL (1) NL7305042A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057185A (en) * 1976-08-16 1977-11-08 Armco Steel Corporation Method and means for operating a pair of pinch rolls
US4192618A (en) * 1977-03-28 1980-03-11 Lrc, Inc. High speed ticket printer
US4201132A (en) * 1978-04-28 1980-05-06 Maschinenfabrik Peter Zimmer Aktiengesellschaft Method of an apparatus for equalizing longitudinal stresses in an advancing web
US4266461A (en) * 1979-07-05 1981-05-12 Karg Corporation Tandem braiding system and components thereof
US4413463A (en) * 1980-10-23 1983-11-08 Lantech, Inc. Roller stretch pass through stretching apparatus and process
US4513898A (en) * 1982-03-22 1985-04-30 Centronics Data Computer Corp. Web loop control apparatus and method
US4896808A (en) * 1987-09-17 1990-01-30 Koening & Bauer Aktiengesellschaft Device for the controlled infeed of a web to a printing machine, method for regulating a corresponding control signal, and device for performing the method
US4915282A (en) * 1989-01-26 1990-04-10 Martin Automatic, Inc. Inertia compensated festoon assembly
WO1991001216A1 (en) * 1989-07-25 1991-02-07 Sterling Envelope Corporation Dual-envelope making machine and method of using
US4997120A (en) * 1988-10-04 1991-03-05 Fuji Photo Film Co., Ltd. Method and apparatus for controlling tension with a lock mechanism
US5024156A (en) * 1985-12-13 1991-06-18 Veb Kombinat Polygraph "Werner Lamberz" Leipzig Safety device for the control of web-fed rotary printing machines
US5180238A (en) * 1990-06-14 1993-01-19 Citizen Watch Co., Ltd. Dot impact printer
US5365844A (en) * 1993-07-29 1994-11-22 Rockwell International Corporation Device for controlling a web in a printing press
US5417157A (en) * 1992-04-01 1995-05-23 Man Roland Druckmaschinen Ag Pair of web pulling cylinders in printing machines
US5797532A (en) * 1994-07-27 1998-08-25 Double E Company, Inc. Web edge control system
US20030031795A1 (en) * 2001-06-25 2003-02-13 Kenneth Bosler System and method for printing an extruded sheet
US20080236299A1 (en) * 2007-03-30 2008-10-02 Man Roland Druckmaschinen Ag Method and device for determining the web tension or the web tensile force in a printing substrate web
US20160193798A1 (en) * 2013-09-13 2016-07-07 Tetra Laval Holdings & Finance S.A. A unit and a method for carrying out a first operation and a second operation on a web
US9816906B2 (en) 2014-04-25 2017-11-14 Honeywell International Inc. Apparatus and method for stretch measurements of tissue webs
KR20200024894A (en) * 2017-09-19 2020-03-09 스미도모쥬기가이고교 가부시키가이샤 Web processing system and control method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19614519A1 (en) * 1996-04-12 1997-10-16 Bhs Corr Masch & Anlagenbau Device for conveying a material web, in particular a corrugated cardboard web
DE19726874A1 (en) * 1997-06-25 1999-01-07 Roland Man Druckmasch Device for changing web tension in rotary printing machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586286A (en) * 1948-04-03 1952-02-19 Technicolor Motion Picture Film registering and printing apparatus
US3087663A (en) * 1961-04-13 1963-04-30 James K Anderson Apparatus for adjusting printing web tension
US3165056A (en) * 1963-04-01 1965-01-12 Champlain Company Inc Registration correction using a single computer to provide plural unequal corrections
US3587959A (en) * 1969-06-02 1971-06-28 Formaster Ltd Web feeding devices
US3734368A (en) * 1970-11-27 1973-05-22 S Kudelski Magnetic tape recorder with constant tape tension

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586286A (en) * 1948-04-03 1952-02-19 Technicolor Motion Picture Film registering and printing apparatus
US3087663A (en) * 1961-04-13 1963-04-30 James K Anderson Apparatus for adjusting printing web tension
US3165056A (en) * 1963-04-01 1965-01-12 Champlain Company Inc Registration correction using a single computer to provide plural unequal corrections
US3587959A (en) * 1969-06-02 1971-06-28 Formaster Ltd Web feeding devices
US3734368A (en) * 1970-11-27 1973-05-22 S Kudelski Magnetic tape recorder with constant tape tension

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057185A (en) * 1976-08-16 1977-11-08 Armco Steel Corporation Method and means for operating a pair of pinch rolls
US4192618A (en) * 1977-03-28 1980-03-11 Lrc, Inc. High speed ticket printer
US4201132A (en) * 1978-04-28 1980-05-06 Maschinenfabrik Peter Zimmer Aktiengesellschaft Method of an apparatus for equalizing longitudinal stresses in an advancing web
US4266461A (en) * 1979-07-05 1981-05-12 Karg Corporation Tandem braiding system and components thereof
US4413463A (en) * 1980-10-23 1983-11-08 Lantech, Inc. Roller stretch pass through stretching apparatus and process
US4513898A (en) * 1982-03-22 1985-04-30 Centronics Data Computer Corp. Web loop control apparatus and method
US5024156A (en) * 1985-12-13 1991-06-18 Veb Kombinat Polygraph "Werner Lamberz" Leipzig Safety device for the control of web-fed rotary printing machines
US4896808A (en) * 1987-09-17 1990-01-30 Koening & Bauer Aktiengesellschaft Device for the controlled infeed of a web to a printing machine, method for regulating a corresponding control signal, and device for performing the method
US4997120A (en) * 1988-10-04 1991-03-05 Fuji Photo Film Co., Ltd. Method and apparatus for controlling tension with a lock mechanism
US4915282A (en) * 1989-01-26 1990-04-10 Martin Automatic, Inc. Inertia compensated festoon assembly
WO1991001216A1 (en) * 1989-07-25 1991-02-07 Sterling Envelope Corporation Dual-envelope making machine and method of using
US5180238A (en) * 1990-06-14 1993-01-19 Citizen Watch Co., Ltd. Dot impact printer
US5417157A (en) * 1992-04-01 1995-05-23 Man Roland Druckmaschinen Ag Pair of web pulling cylinders in printing machines
US5365844A (en) * 1993-07-29 1994-11-22 Rockwell International Corporation Device for controlling a web in a printing press
US5797532A (en) * 1994-07-27 1998-08-25 Double E Company, Inc. Web edge control system
US20030031795A1 (en) * 2001-06-25 2003-02-13 Kenneth Bosler System and method for printing an extruded sheet
US6823794B2 (en) * 2001-06-25 2004-11-30 Bosler Designs, Inc. System and method for printing an extruded sheet
US20080236299A1 (en) * 2007-03-30 2008-10-02 Man Roland Druckmaschinen Ag Method and device for determining the web tension or the web tensile force in a printing substrate web
US7647845B2 (en) * 2007-03-30 2010-01-19 Man Roland Druckmaschinen Ag Method and device for determining the web tension or the web tensile force in a printing substrate web
US10286583B2 (en) * 2013-09-13 2019-05-14 Tetra Laval Holdings & Finance S.A. Unit and a method for carrying out a first operation and a second operation on a web
US20160193798A1 (en) * 2013-09-13 2016-07-07 Tetra Laval Holdings & Finance S.A. A unit and a method for carrying out a first operation and a second operation on a web
US9816906B2 (en) 2014-04-25 2017-11-14 Honeywell International Inc. Apparatus and method for stretch measurements of tissue webs
KR20200024894A (en) * 2017-09-19 2020-03-09 스미도모쥬기가이고교 가부시키가이샤 Web processing system and control method
CN111065592A (en) * 2017-09-19 2020-04-24 住友重机械工业株式会社 Coil processing system and control method
US20200215814A1 (en) * 2017-09-19 2020-07-09 Sumitomo Heavy Industries, Ltd. Processing system and control method for handling continuous sheet of material
CN111065592B (en) * 2017-09-19 2022-04-26 住友重机械工业株式会社 Coil processing system and control method
US11472173B2 (en) * 2017-09-19 2022-10-18 Sumitomo Heavy Industries, Ltd. Processing system and control method for handling continuous sheet of material

Also Published As

Publication number Publication date
FR2214294A5 (en) 1974-08-09
LU69135A1 (en) 1974-05-17
BE809504A (en) 1974-05-02
IT1006778B (en) 1976-10-20
DE2400989A1 (en) 1974-07-25
GB1457593A (en) 1976-12-08
NL7305042A (en) 1974-07-15
DE2400989B2 (en) 1978-09-21

Similar Documents

Publication Publication Date Title
US3905533A (en) Apparatus for regulating tension in sheet material
US3326436A (en) Web registering and tension control system for multi-unit presses
US4461212A (en) Drive and printing mechanism for a franking machine
US5301609A (en) Printing unit with skew and throw-off mechanisms
US3025791A (en) Variable web tension for uniform layoff
US4127066A (en) Adjustable compression roller apparatus
US3892344A (en) Method and device for regulating the tension and length of a sheet of material
US2972297A (en) Multicolor printing on a continuous web
US3442121A (en) Device for supervising the ink supply of a printing press
JPS618136U (en) Multicolor rotary printing machine
DE69119438D1 (en) Color device for printing machines
US2263323A (en) Printing press
SU448628A3 (en) Inking machine
US1554597A (en) Offset printing press
EP0029312A1 (en) Flexographic belt printing press
US3630426A (en) Train of feed rolls for paper, plastics or textile webs
US3633504A (en) Rotary press with web-tensioning roll means
GB1197508A (en) Improvements relating to Damping Systems for Offset Printing Machines
US3563174A (en) Web tensioning with adjustable counterweights for controling the spacing of imprints
US3163110A (en) Interrupter for rotary printing machines
US2164363A (en) Printing press
US1661209A (en) Printing press
GB2179164A (en) Web transport and tension-measuring apparatus
US3645203A (en) Press for web printing having intermittent paper-feeding means
US2052638A (en) Rotary web undersurface printing machine