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WO1986002623A1 - Dispositif de commande pour un appareil de conversion du papier - Google Patents

Dispositif de commande pour un appareil de conversion du papier Download PDF

Info

Publication number
WO1986002623A1
WO1986002623A1 PCT/GB1985/000497 GB8500497W WO8602623A1 WO 1986002623 A1 WO1986002623 A1 WO 1986002623A1 GB 8500497 W GB8500497 W GB 8500497W WO 8602623 A1 WO8602623 A1 WO 8602623A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
paper
movement
printing device
accordance
Prior art date
Application number
PCT/GB1985/000497
Other languages
English (en)
Inventor
Michael Weller
Original Assignee
Doverstar Machinery 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 Doverstar Machinery Ltd. filed Critical Doverstar Machinery Ltd.
Priority to GB08710477A priority Critical patent/GB2191312B/en
Publication of WO1986002623A1 publication Critical patent/WO1986002623A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/16—Means for paper feeding or form feeding
    • 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
    • B65H23/046—Sensing longitudinal register of web

Definitions

  • the present invention relates to a control device for paper converting apparatus, especially a printer, and more particularly, but not exclusively, to a feeding device for a printing machine used for mass producing stationery, such as computer stationery, for example.
  • Computer stationery supplied to a user for use with a computer print-out machine normally consists' of a single length of paper folded into a "zig-zag" pack of sheets along transverse perforations.
  • Rolls of stationery for use with print-out machines are also known.
  • Such lengths of stationery are usually provided with a series of regularly spaced holes along one or both edges along the length. These holes are used to feed the paper through the printer by means of rotary driven wheels which have radially directed spikes extending at regular intervals around their peripheries and arranged to engage with the holes in the paper.
  • “tractor feeds” consisting of belts or metal bands with spikes or pins attached to feed the paper through the printer.
  • Such stationery before it is supplied to the user, commonly has matter already printed on it. Examples are gas and electricity bills.
  • Such stationery can be produced by feeding continuous lengths of plain paper at high speeds through printing machines. It is imperative in these machines that the speed at which the paper is fed through the machine is precisely correlated with the speed of the printing device for printing the matter on the sheet in order to ensure that the matter is retained in the correct position on each sheet. Also, over the great lengths of paper passed through the printing machine a variation in the pitch of the holes punched in the edge from the nominal pitch tends to occur. This variation should also be taken into account if stationery is to be produced on which matter is printed in the correct position on each sheet. It is desirable to monitor the relative speeds of the paper and the printing device and to provide means for maintaining them in correlation so that the paper remains in correct "registration", i.e. each stationery sheet produced is correctly printed.
  • the printing process may demand high paper tension due to the high speed with which the paper is fed through the machine (in the order of 500 feet per minute or more in some cases) the paper cannot be fed by means of holes punched at the edges, since the tension would distort or tear the holes.
  • the paper is fed into the printing device by means of a roller (the “infeed roller"), against which the paper is held by means of gripper wheels.
  • 2830932 discloses a device for monitoring the length of a paper web passing through a rotary printing press for the purpose of maintaining correct pitch or "length" between holes which are punched in the edges of the paper web during the printing operation.
  • the holes in the edges of the paper engage with the projections of a guide sprocket wheel, the wheel acting to monitor the rate at which the holes pass it.
  • a further wheel is positioned to frictionally engage the paper web to monitor the speed of the paper. Signals from the guide sprocket wheel and further wheel are compared and the speed of the paper can be adjusted accordingly to maintain the correct length between the holes in the paper.
  • the device of DE 2830932 may maintain the correct pitch between the holes, it does nothing to control the printing operation to ensure correct positioning of the printed material on the paper in correct rejistration.
  • the present invention provides a control device for paper converting apparatus, said device comprising a first means arranged to monitor the rate of movement of a printing device, a second means arranged to monitor the rate of movement of a web to be printed upon by said printing device, and a control means arranged to compare a first signal indicative of the rate of movement of the web with a second signal indicative of the rate of movement of the printing device and to control the relative rates of movement of said printing device and web in accordance with said comparison, whereby correct •registration of printing on the web is produced, said second means comprising a body having projections arranged to engage with indentations or perforations in said web, whereby movement of said web is transmitted to said body via said projections.
  • a main drive motor 1 drives a printing device 2 and a rotary infeed roller 3 , as well as other devices (not shown) in the printing machine.
  • the infeed roller 3 is driven via a differential gear box 4, one input 9 of which is connected to the printing device 2.
  • Paper 5 to be printed is fed towards the printing device by means of the infeed roller 3•
  • a number of evenly spaced holes 6 which extend in a line are provided along at least one edge of the paper 5 « pinwheel 7 - which is provided with a number of evenly spaced radially extending spikes 8 in its periphery, is positioned so that the spikes 8 engage with the holes 6 in the paper 5-
  • the pinwheel 7 When the infeed roller 3 is being driven, i.e. it is rotating, and the paper 5 is being fed towards the printing device 2, the pinwheel 7 will be turned by the movement of the holes 6, the line of holes 6 extending along the direction of movement of the paper 5 3 and so the linear motion of the paper 5 is converted into rotary motion of the pinwheel 7 -
  • An encoder 10 is connected to the pinwheel 7 -
  • the encoder is preferably a digital shaft encoder or resolver, and is arranged to provide an output indicative of the movement of the paper 5 > via the rotary motion of the pinwheel 7 •
  • Another encoding device 12 is connected to the printing device 2 and provides an indication of the movement of the printing device 2.
  • the encoders 10 and 12 may be arranged to have a very high resolution. For the encoder 10 resolutions have been achieved as high as the production of a signal for every 0.0012 inch of paper 5 > and it is possible to envisage higher resoloutions using appropriate encoders.
  • the signals from both encoders 10 and 12 are fed into a differential counter 14 which compares the two signals and produces a continuous count of positive or negative error, i.e. it effectively compares the relative speeds of the paper 5 and printing device 2 to see if they are. in correct correlation.
  • the error count from the differential counter 14 is used to drive a correction motor control system 15, which controls a correction motor 16 which drives the differential gear box 4 in accordance with the error.
  • the speed of rotation of the infeed roller 3 and consequently the speed of the paper 5 will therefore be adjusted according to the error signal, and the paper 5 will be main ⁇ tained in correct registration.
  • the correction motor control system 15 and correction motor 16 may include a device such as a stepper motor which is driven by the error count, or the count may be converted to a voltage which is used as the input to a servo-motor system which drives the differential gear box 4» Alternatively the roller may be driven from the machine through a variable ratio gear box controlled by the error signal.
  • the printing device 2 is preferably a rotary device, such as a printing cylinder or cylinders.
  • this system has the advantage that a very high basic resolution can be achieved, limited only the the design and resolution of the encoders.
  • the encoders 10 and 11 may themselves be optical encoders. Also, fewer problems arise due to certian. holes 6 being out of place- or having ragged edges, as a form of mechanical "averaging" takes place through the pinwheel 7 • This is achieved by more than one pin 8 being in engagement with the paper 5 at any one time. The fact that a pinwheel 7 is utilised also gives rise to the advantage that the paper 5 is automatically aligned in a transverse direction by the pins 8.
  • the paper 5 can be easily moved to make register adjustments by introducing artificial error signals into the system.
  • control device is not limited for use in printing computer stationery, but can be used in any paper conversion machine for other suitable paper conversion applications. It should also be noted.that, although the embodiment described discloses the maintenance of the correct registration of the paper by means of the adjustment of the paper speed, the error signal and correction system could be equally as well applied to the printing device to regulate its speed, e.g. by effecting rotation of the printing roller 2 via the use of a differential gear box.
  • the means for monitoring the paper speed need not necessarily be a pinwheel, but could be any body having projections arranged to engage with indentations or holes in the web, the body being arranged to be moved in accordance with the movement of the web being transmitted to the projections e.g. the body could be in the form of a "tractor feed" having projections.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Handling Of Sheets (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)

Abstract

Un dispositif de commande est destiné à un appareil de conversion du papier tel qu'une machine à imprimer. Des moyens sont prévus pour contrôler la vitesse d'une bande de papier passant par un dispositif d'impression et la vitesse du dispositif d'impression lui-même. Des signaux indicatifs des deux vitesses sont comparés par des moyens de commande, et le résultat de la comparaison est utilisé pour commander les vitesses relatives du papier et du dispositif d'impression de manière à obtenir un repérage correct de l'impression sur le papier. Les moyens de contrôle de la vitesse de la bande de papier consistent en un corps (7) pourvu de picots (8) qui s'engage dans des perforations (6) de la bande, le mouvement du papier étant transmis au corps par l'intermédiaire des pointes. Le corps est de préférence une roue à cheville montée en rotation.
PCT/GB1985/000497 1984-11-01 1985-11-01 Dispositif de commande pour un appareil de conversion du papier WO1986002623A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08710477A GB2191312B (en) 1984-11-01 1985-11-01 Control device for printing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8427660 1984-11-01
GB848427660A GB8427660D0 (en) 1984-11-01 1984-11-01 Printer

Publications (1)

Publication Number Publication Date
WO1986002623A1 true WO1986002623A1 (fr) 1986-05-09

Family

ID=10569101

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1985/000497 WO1986002623A1 (fr) 1984-11-01 1985-11-01 Dispositif de commande pour un appareil de conversion du papier

Country Status (5)

Country Link
EP (1) EP0233877A1 (fr)
JP (1) JPS62501207A (fr)
AU (1) AU5013985A (fr)
GB (2) GB8427660D0 (fr)
WO (1) WO1986002623A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482708A1 (fr) * 1990-10-26 1992-04-29 Océ-Nederland B.V. Dispositif d'impression
GB2271962A (en) * 1992-11-02 1994-05-04 Hussain Matlub Controlling a printing unit in response to the sensed speed of the substrate therethrough.
EP1052108A1 (fr) * 1999-05-13 2000-11-15 Gerber Scientific Products, Inc. Système à repérage d'avance de matériau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106671614B (zh) * 2015-11-09 2019-02-26 北大方正集团有限公司 数码印刷系统走纸速度的校准方法及装置、数码印刷系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB274686A (en) * 1926-10-08 1927-07-28 Ringier & Co Verlagsanstalt & Improvements in and relating to multi-colour printing machines
FR37954E (fr) * 1927-07-05 1931-03-03 Vogtlandische Maschinen Fabrik Dispositif pour amener au registre une bande de conditionnements, d'annexes ou d'additifs, imprimée au préalable, et à prélever d'un rouleau, sur des ouvrages d'imprimerie provenant d'une machine d'impression
GB975741A (en) * 1961-09-20 1964-11-18 Robert John Kieckhefer Improvements in apparatus for printing impressions upon a continuous strip
US3264984A (en) * 1964-07-31 1966-08-09 Smith R P M Corp Web length control device for rotary printing press
US3276647A (en) * 1964-03-31 1966-10-04 Champlain Company Inc Register control system for a moving web
GB1131019A (en) * 1965-06-22 1968-10-16 Borg Warner Paper advance system
US3498514A (en) * 1968-09-23 1970-03-03 Standard Register Co High speed web feed apparatus
GB1346418A (en) * 1970-06-19 1974-02-13 Formmaster Ltd Web register devices
DE2830932A1 (de) * 1977-08-08 1979-02-22 Baumer Ag P Kontrollgeraet zur ueberwachung einer papierbahn

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB274686A (en) * 1926-10-08 1927-07-28 Ringier & Co Verlagsanstalt & Improvements in and relating to multi-colour printing machines
FR37954E (fr) * 1927-07-05 1931-03-03 Vogtlandische Maschinen Fabrik Dispositif pour amener au registre une bande de conditionnements, d'annexes ou d'additifs, imprimée au préalable, et à prélever d'un rouleau, sur des ouvrages d'imprimerie provenant d'une machine d'impression
GB975741A (en) * 1961-09-20 1964-11-18 Robert John Kieckhefer Improvements in apparatus for printing impressions upon a continuous strip
US3276647A (en) * 1964-03-31 1966-10-04 Champlain Company Inc Register control system for a moving web
US3264984A (en) * 1964-07-31 1966-08-09 Smith R P M Corp Web length control device for rotary printing press
GB1131019A (en) * 1965-06-22 1968-10-16 Borg Warner Paper advance system
US3498514A (en) * 1968-09-23 1970-03-03 Standard Register Co High speed web feed apparatus
GB1346418A (en) * 1970-06-19 1974-02-13 Formmaster Ltd Web register devices
DE2830932A1 (de) * 1977-08-08 1979-02-22 Baumer Ag P Kontrollgeraet zur ueberwachung einer papierbahn

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482708A1 (fr) * 1990-10-26 1992-04-29 Océ-Nederland B.V. Dispositif d'impression
US5321437A (en) * 1990-10-26 1994-06-14 Oce-Nederland B.V. Printing device
GB2271962A (en) * 1992-11-02 1994-05-04 Hussain Matlub Controlling a printing unit in response to the sensed speed of the substrate therethrough.
EP1052108A1 (fr) * 1999-05-13 2000-11-15 Gerber Scientific Products, Inc. Système à repérage d'avance de matériau

Also Published As

Publication number Publication date
GB8710477D0 (en) 1987-06-03
AU5013985A (en) 1986-05-15
GB2191312B (en) 1988-11-16
GB2191312A (en) 1987-12-09
JPS62501207A (ja) 1987-05-14
GB8427660D0 (en) 1984-12-05
EP0233877A1 (fr) 1987-09-02

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