EP0223405A1 - Appareil de mise en registre - Google Patents

Appareil de mise en registre Download PDF

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Publication number
EP0223405A1
EP0223405A1 EP86307935A EP86307935A EP0223405A1 EP 0223405 A1 EP0223405 A1 EP 0223405A1 EP 86307935 A EP86307935 A EP 86307935A EP 86307935 A EP86307935 A EP 86307935A EP 0223405 A1 EP0223405 A1 EP 0223405A1
Authority
EP
European Patent Office
Prior art keywords
register
web
printing
flow path
machine
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.)
Ceased
Application number
EP86307935A
Other languages
German (de)
English (en)
Inventor
Jeffrey Isherwood
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.)
Harland Crosfield Ltd
Original Assignee
Crosfield Electronics Ltd
Harland Crosfield Ltd
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 Crosfield Electronics Ltd, Harland Crosfield Ltd filed Critical Crosfield Electronics Ltd
Publication of EP0223405A1 publication Critical patent/EP0223405A1/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0081—Devices for scanning register marks

Definitions

  • This invention relates to the detection of errors in register in operations performed on a web.
  • register control is normally effected by printing register marks on the web for each of the colour-component images and using light-sensitive cells to detect the passage and the position of the marks.
  • the register marks for the different colour components are printed with longitudinal spacings, which are of known value for correct register, in an image-free strip of the web running along the web edge.
  • a code mark may be provided ahead of the register marks or the first register mark may be of a form capable of recognition by a suitable electronic circuit.
  • a register control of a slightly different kind is required when a web on which a repeated image has been printed is to be subjected to an operation such as cutting or folding in register with the printed images.
  • one of the signals to be compared can be derived by sensing a register mark printed at the same time as the image print but the other signal must represent the position of the cutter or folder in its cycle of operation.
  • such a second signal is derived from the cutting or folding machine by a magnetic pick-up device.
  • the present invention is particularly concerned with a register control of the kind in which an operation such as folding or cutting is to be performed on the web in register with a printed image.
  • the present invention relates to printing apparatus having a web flow path extending from a printing cylinder, for printing repeat images and register marks on the web, to a machine operating in synchronism with the printing cylinder to perform a non-printing operation on the web in register with the printed images, the web flow path having a length such that it includes a number of printed images; according to the invention, a first mark detector is arranged in the flow path immediately after the printing cylinder, a second mark detector is arranged in the flow path immediately before the machine performing the non-printing operation, and a register control unit receives signals from the two detectors and adjusts register control means in accordance with any departure in the relative timing of the signals from a desired relative timing.
  • any interval between the two signals indicates incorrect register and causes the generation of a control signal which may, for example, adjust the position of a compensating roller placed in the flow path so that the web passes over it.
  • the present invention enables register control to be achieved between the printing operation and a cutting or folding operation without requiring a signal derived from the cutter or folder. It is able to achieve this result because the cutter or folder and the printing cylinder rotate in synchronism and the first detector is located immediately after the printing cylinder, i.e. at a position such that any dimensional change of the web between printing and mark detection is negligible; consequently, the signal derived from the first detector is effectively indicative of the position of the cutting cylinder.
  • the signal from the second detector represents the mark position at the end of the web path between the printing cylinder and non-printing machine and, therefore, takes into account the effect of any stretch in the printed web along the flow path. Consequently, a comparison of the relative phases of these marks is indicative of the degree of register between the printed mark on the web close to the folding or cutting machine and the folding or cutting operation carried out by that machine.
  • a code mark is printed ahead of the register mark to indicate to the control circuit that register control signals are to be expected from the detectors.
  • a web 10 from a supply roll 11 passes between printing cylinders 12a and 12b driven by a motor 13 and then around rollers constituting a register compensation system. These rollers are the fixed rollers 14 and 16 and an intermediate roller 18 which can be adjusted in a direction perpendicular to the plane of the web in the principal direction of the web path.
  • the web After leaving the register compensation system, the web passes through a cutting machine having cutting cylinders 20a and 20b, provided with a blade 22 from which emerge the printed cut sheets 10a; the cutting cylinders are also driven by the motor 13.
  • a first detector 24 is arranged immediately after the printing cylinders 12a and 12b.
  • a second detector 26 is arranged immediately before the cutting cylinders 20a and 20b. Signals from the first and second detectors are applied to a register control circuit 28, the output of which is an error signal which energises a controller 30 to control the position of the intermediate roller 18.
  • the printing cylinders and the rollers of the cutting machine are operating in synchronism with one another and with a given phase relationship.
  • the compensator In order to maintain correct register the compensator must be adjusted so that the total number of images is equal to a whole numler of images plus a portion of an image corresponding to the difference in phase relation between the printing cylinder and a cutting cylinder.
  • the first detector is closely adjacent the exit side of the printing cylinder and consequently, the signal which it generates on seeing a register mark printed by the printing cylinder is representative of the angular position of the printing cylinder and, therefore, of the cutting roller.
  • the signal from the second detector on seeing a register mark takes into account any stretching of the web which has occurred as it passes along the flow path and which would otherwise prevent the above-mentioned desired phase relationship from being achieved.
  • the error signal from the register control unit indicative of such stretching, adjusts the compensating roller to modify the path length of the flow path and thereby to restore correct register.
  • a marginal portion of the web 10 is shown in plan view with code marks 32 and register marks 34.
  • the code marks 32 are recognised by the register control circuit and prepare that circuit for receiving the register control signals derived from the marks 34. It is an unusual feature of the invention that the marks from which the signals are derived for comparison are spaced by a large number of complete image lengths along the flow path.
  • the invention enables the printer to dispense with the conventional timer linked to the cutting or folding machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP86307935A 1985-10-24 1986-10-14 Appareil de mise en registre Ceased EP0223405A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858526249A GB8526249D0 (en) 1985-10-24 1985-10-24 Register control apparatus
GB8526249 1985-10-24

Publications (1)

Publication Number Publication Date
EP0223405A1 true EP0223405A1 (fr) 1987-05-27

Family

ID=10587191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86307935A Ceased EP0223405A1 (fr) 1985-10-24 1986-10-14 Appareil de mise en registre

Country Status (3)

Country Link
EP (1) EP0223405A1 (fr)
JP (1) JPS62101442A (fr)
GB (1) GB8526249D0 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600943A1 (fr) * 1986-03-17 1988-01-08 Bobst Sa Procede et dispositif pour commander le reglage des organes d'une machine pour les arts graphiques et le cartonnage
US5025725A (en) * 1989-07-21 1991-06-25 Seiko Instruments, Inc. Double paper cut system for printer mechanism
DE4212987A1 (de) * 1992-04-18 1993-10-21 Alfill Getraenketechnik Verfahren und Vorrichtung zum Fördern einer Materialbahn
US5452632A (en) * 1992-10-12 1995-09-26 Heidelberger Druckmaschinen Ag Method for setting the cutting register on a cross-cutting device disposed downline of a web-fed printing press
WO1998052754A1 (fr) * 1997-05-21 1998-11-26 Koenig & Bauer Aktiengesellschaft Procede et dispositif d'entrainement d'une bande de materiau
EP0893252A2 (fr) * 1997-07-24 1999-01-27 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour ajuster la tension de la bande après un dispositif refroidisseur dans une machine à imprimer
US6564710B1 (en) * 1998-10-31 2003-05-20 CSAT Gesellschaft für Computer Systeme und Automations-Technik mit beschränkter Haftung Apparatus for imprinting an unmarked foil
WO2005124470A2 (fr) * 2004-06-21 2005-12-29 Oce Printing Systems Gmbh Imprimante ou copieur pour l'impression d'un materiau support sans fin a plis transversaux, et procede de commande de cette imprimante ou de ce copieur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0753916Y2 (ja) * 1987-08-26 1995-12-13 三菱重工業株式会社 断裁位置制御装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB949415A (fr) * 1900-01-01
FR1456662A (fr) * 1965-08-03 1966-07-08 John F Mccarthy Inc Appareil pour contrôler des procédés à grande vitesse y compris des presses d'imprimerie multicolore
US3870936A (en) * 1972-05-25 1975-03-11 Hurletron Inc Digital motor control system for web registration
EP0131241A2 (fr) * 1983-07-06 1985-01-16 AB Tetra Pak Procédé et dispositif de saisie de marques opposées sur une bande de matériau mobile, pourvue d'un décor imprimé, par des moyens photoélectriques
EP0146403A2 (fr) * 1983-12-19 1985-06-26 THOMAS FORMAN & SONS LIMITED Vérification d'intégrité de données

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB949415A (fr) * 1900-01-01
FR1456662A (fr) * 1965-08-03 1966-07-08 John F Mccarthy Inc Appareil pour contrôler des procédés à grande vitesse y compris des presses d'imprimerie multicolore
US3870936A (en) * 1972-05-25 1975-03-11 Hurletron Inc Digital motor control system for web registration
EP0131241A2 (fr) * 1983-07-06 1985-01-16 AB Tetra Pak Procédé et dispositif de saisie de marques opposées sur une bande de matériau mobile, pourvue d'un décor imprimé, par des moyens photoélectriques
EP0146403A2 (fr) * 1983-12-19 1985-06-26 THOMAS FORMAN & SONS LIMITED Vérification d'intégrité de données

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AUTOMATION, July 1965, pages 80-82; J. S. EINSTEIN: "Register control of web processes" *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600943A1 (fr) * 1986-03-17 1988-01-08 Bobst Sa Procede et dispositif pour commander le reglage des organes d'une machine pour les arts graphiques et le cartonnage
US5025725A (en) * 1989-07-21 1991-06-25 Seiko Instruments, Inc. Double paper cut system for printer mechanism
DE4212987A1 (de) * 1992-04-18 1993-10-21 Alfill Getraenketechnik Verfahren und Vorrichtung zum Fördern einer Materialbahn
US5421227A (en) * 1992-04-18 1995-06-06 Alfill Getranketechnik Gmbh Method of subdividing webs
US5452632A (en) * 1992-10-12 1995-09-26 Heidelberger Druckmaschinen Ag Method for setting the cutting register on a cross-cutting device disposed downline of a web-fed printing press
US6360665B1 (en) 1997-05-21 2002-03-26 Koenig & Bauer Aktiengesellschaft Method and device for drawing in a strip of material
WO1998052754A1 (fr) * 1997-05-21 1998-11-26 Koenig & Bauer Aktiengesellschaft Procede et dispositif d'entrainement d'une bande de materiau
EP0893252A2 (fr) * 1997-07-24 1999-01-27 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour ajuster la tension de la bande après un dispositif refroidisseur dans une machine à imprimer
EP0893252A3 (fr) * 1997-07-24 1999-10-13 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour ajuster la tension de la bande après un dispositif refroidisseur dans une machine à imprimer
US6564710B1 (en) * 1998-10-31 2003-05-20 CSAT Gesellschaft für Computer Systeme und Automations-Technik mit beschränkter Haftung Apparatus for imprinting an unmarked foil
WO2005124470A2 (fr) * 2004-06-21 2005-12-29 Oce Printing Systems Gmbh Imprimante ou copieur pour l'impression d'un materiau support sans fin a plis transversaux, et procede de commande de cette imprimante ou de ce copieur
WO2005124470A3 (fr) * 2004-06-21 2006-06-08 Oce Printing Systems Gmbh Imprimante ou copieur pour l'impression d'un materiau support sans fin a plis transversaux, et procede de commande de cette imprimante ou de ce copieur
US8437681B2 (en) 2004-06-21 2013-05-07 OCéPRINTING SYSTEMS GMBH Printer or copier for printing an endless support material comprising transversal folds, and method for controlling such a printer or copier

Also Published As

Publication number Publication date
GB8526249D0 (en) 1985-11-27
JPS62101442A (ja) 1987-05-11

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