EP0512448B1 - Dispositif de lecture de marques de couleur pâle dans une machine d'impression - Google Patents

Dispositif de lecture de marques de couleur pâle dans une machine d'impression Download PDF

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Publication number
EP0512448B1
EP0512448B1 EP92107486A EP92107486A EP0512448B1 EP 0512448 B1 EP0512448 B1 EP 0512448B1 EP 92107486 A EP92107486 A EP 92107486A EP 92107486 A EP92107486 A EP 92107486A EP 0512448 B1 EP0512448 B1 EP 0512448B1
Authority
EP
European Patent Office
Prior art keywords
stage
circuit
followed
fact
impulses
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
EP92107486A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0512448A1 (fr
Inventor
Patrick Monney
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.)
Bobst Mex SA
Original Assignee
Bobst SA
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Filing date
Publication date
Application filed by Bobst SA filed Critical Bobst SA
Publication of EP0512448A1 publication Critical patent/EP0512448A1/fr
Application granted granted Critical
Publication of EP0512448B1 publication Critical patent/EP0512448B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices

Definitions

  • a diode emitting red light and a diode emitting green light are used in combination to identify a registration mark.
  • the light emitted is sent to a prism and lens assembly through a semi-transparent mirror.
  • a second semi-transparent mirror directs the red and green lights onto a focusing lens which produces two scanning rays on the surface of the band moving in the machine.
  • the registration marks pass under the scanning rays, the alternately red and green light is reflected through the set of lenses and is received by a photo-sensitive unit composed of a pair of photodetectors bridged with a pair of resistances.
  • a differential amplifier connected diagonally collects a series of electrical signals more or less contrasted depending on the color of the light.
  • a processing stage generates a pulse by accumulating the series in a capacitor.
  • Document JP-A-61 164 835 describes a device for reading color marks comprising four photoelectric units in parallel. Three of them are composed of a photo-diode behind a color filter while the fourth is not equipped with a color filter. The units are connected to a pre-amplifier, as well as to a single processing channel where the electrical signals from the first three units and the inverted electrical signal representative of the background from the fourth are added in a summing circuit, the pulse result being compared to a threshold value.
  • Other devices are known, such as for example that described in the document EP 0 094 027. These devices function to satisfaction as long as the yellow, blue or red marks are sufficiently contrasted to be recognized without ambiguity by the device.
  • the photosensitive unit includes a photodiode placed behind a color filter and connected to the input of a current / voltage converter converting the electrical signal from the photo-diode into voltage.
  • the length of the bundle of optical fibers 25, any dust that can alter the entry or exit of the fibers as well as the filters, the base voltage collected at the output of the current / voltage converter 34.35 can vary between 150 millivolts and 8 volts.
  • FIG. 1a represents a device similar to that of FIG. 1 in which the bundle of optical fibers 25 has not been split.
  • a light diffusion member 25a has been arranged at the end of the bundle of optical fibers 25 so that the reflected light is routed indifferently on the filters 30 and 31.
  • the construction of the other elements of the device comprising inter alia the photodiodes 32 and 33 as well as the current / voltage converters 34 and 35 remain unchanged compared to the arrangement described in FIG. 1.
  • the peak subtraction stage 62 receives on the one hand the signal from the peak detection stage 61 through the resistor 621 and on the other hand, through the resistor 622, the instantaneous signal previously amplified d '' a gain of 1 per the operational amplifier 619.
  • the comparison is carried out by the amplifier 631 receiving the threshold signal on its positive input and the difference signal on its negative input.

Landscapes

  • Spectrometry And Color Measurement (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Color, Gradation (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Credit Cards Or The Like (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Dot-Matrix Printers And Others (AREA)
EP92107486A 1991-05-06 1992-05-02 Dispositif de lecture de marques de couleur pâle dans une machine d'impression Expired - Lifetime EP0512448B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1327/91 1991-05-06
CH132791A CH686357A5 (fr) 1991-05-06 1991-05-06 Dispositif de lecture d'une marque imprimée sur un élément en plaque ou en bande.

Publications (2)

Publication Number Publication Date
EP0512448A1 EP0512448A1 (fr) 1992-11-11
EP0512448B1 true EP0512448B1 (fr) 1997-04-09

Family

ID=4207872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107486A Expired - Lifetime EP0512448B1 (fr) 1991-05-06 1992-05-02 Dispositif de lecture de marques de couleur pâle dans une machine d'impression

Country Status (11)

Country Link
US (1) US5215011A (enrdf_load_stackoverflow)
EP (1) EP0512448B1 (enrdf_load_stackoverflow)
JP (2) JPH05147197A (enrdf_load_stackoverflow)
KR (1) KR970000777B1 (enrdf_load_stackoverflow)
AT (1) ATE151348T1 (enrdf_load_stackoverflow)
CA (1) CA2067994C (enrdf_load_stackoverflow)
CH (1) CH686357A5 (enrdf_load_stackoverflow)
DE (1) DE69218821T2 (enrdf_load_stackoverflow)
DK (1) DK0512448T3 (enrdf_load_stackoverflow)
ES (1) ES2100248T3 (enrdf_load_stackoverflow)
TW (1) TW276319B (enrdf_load_stackoverflow)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016576A1 (en) * 1993-12-13 1995-06-22 Whittington, Ruth Machine readable code presentations
DE4401535C2 (de) * 1994-01-20 2002-10-24 Heidelberger Druckmasch Ag Verfahren zum Abtasten von im Mehrfarbendruck erzeugten Registermarken
CH690544A5 (fr) * 1995-05-08 2000-10-13 Bobst Sa Détecteur photoélectrique pour un dispositif de contrôle du registre dans une machine d'impression rotative.
EP0765748A3 (en) * 1995-09-29 1997-08-13 Goss Graphics Systems Inc Device for aligning images in a control system for a printing machine
EP0770480B1 (de) * 1995-10-25 2001-12-19 Heidelberger Druckmaschinen Aktiengesellschaft Digitale Druckmaschine mit Registerregelung
FR2743079B1 (fr) 1995-12-27 1998-02-06 Inst Francais Du Petrole Procede et dispositif d'hydrogenation selective par distillation catalytique comportant une zone reactionnelle a co-courant ascendant liquide-gaz
FR2743080B1 (fr) 1995-12-27 1998-02-06 Inst Francais Du Petrole Procede de reduction selective de la teneur en benzene et en composes insatures legers d'une coupe d'hydrocarbures
GB9603582D0 (en) 1996-02-20 1996-04-17 Hewlett Packard Co Method of accessing service resource items that are for use in a telecommunications system
FR2743081B1 (fr) 1995-12-27 1998-01-30 Inst Francais Du Petrole Procede de reduction selective de la teneur en benzene et en composes insatures legers d'une coupe d'hydrocarbures
US6069890A (en) 1996-06-26 2000-05-30 Bell Atlantic Network Services, Inc. Internet telephone service
US6154445A (en) 1996-04-18 2000-11-28 Bell Atlantic Network Services, Inc. Telephony communication via varied redundant networks
US5828075A (en) * 1996-10-11 1998-10-27 Hurletron, Incorporated Apparatus for scanning colored registration marks
US6078582A (en) 1996-12-18 2000-06-20 Bell Atlantic Network Services, Inc. Internet long distance telephone service
US6137869A (en) 1997-09-16 2000-10-24 Bell Atlantic Network Services, Inc. Network session management
US6574216B1 (en) 1997-03-11 2003-06-03 Verizon Services Corp. Packet data network voice call quality monitoring
US6870827B1 (en) 1997-03-19 2005-03-22 Verizon Services Corp. Voice call alternative routing through PSTN and internet networks
US6292479B1 (en) 1997-03-19 2001-09-18 Bell Atlantic Network Services, Inc. Transport of caller identification information through diverse communication networks
CH694184A5 (fr) 2000-12-27 2004-08-31 Bobst Sa Dispositif de lecture de marques de rep'rage dans une machine d'impression polychrome.
US6591746B2 (en) 2001-06-13 2003-07-15 Hurletron, Incorporated Registration system for printing press
US7013803B2 (en) 2002-02-06 2006-03-21 Quad/Tech, Inc. Color registration control system for a printing press
US7253929B2 (en) * 2002-02-06 2007-08-07 Quad/Tech, Inc. Camera assembly for a printing press
US7074978B2 (en) * 2003-02-25 2006-07-11 Abb Lummus Global Inc. Process for the production of alkylbenzene
DE102008049908A1 (de) * 2008-10-02 2010-04-08 Robert Bosch Gmbh Verfahren zur Erzeugung eines Detektionssignals und Erfassungseinrichtung
US8238538B2 (en) 2009-05-28 2012-08-07 Comcast Cable Communications, Llc Stateful home phone service
JP6292759B2 (ja) * 2013-03-12 2018-03-14 住友重機械工業株式会社 マークセンサ及び光検出素子によるマーク判定方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546700A (en) * 1981-12-30 1985-10-15 Kollmorgen Technologies Corporation Method and apparatus for sensing and maintaining color registration
JPS58190703A (ja) * 1982-04-30 1983-11-07 Dainippon Printing Co Ltd 印刷機の見当マ−ク検知用センサ−
US4534288A (en) * 1982-05-06 1985-08-13 Harris Graphics Corporation Method and apparatus for registering overlapping printed images
DE3311352C1 (de) * 1983-03-29 1984-03-15 Ingenieurbüro Rudolf Weber KG, 6100 Darmstadt Detektor zur Registrierung von Marken
JPS6174846A (ja) * 1984-09-20 1986-04-17 Nireko:Kk 自動見当合せ装置
FR2578486B1 (fr) * 1985-03-08 1987-06-12 Bertin & Cie Procede et dispositif de positionnement d'objets les uns par rapport aux autres, en particulier des rouleaux d'impression de couleurs dans une presse rotative offset
US5076163A (en) * 1986-04-07 1991-12-31 Quad/Tech, Inc. Web registration control system
CA1339689C (en) * 1986-04-18 1998-02-24 Andre Kudelski Apparatus for interactive communication between a pay televisiion subscriber and a decoder
DE3643721A1 (de) * 1986-12-20 1988-06-30 Heidelberger Druckmasch Ag Druckkontrollstreifen
US4947348A (en) * 1987-03-25 1990-08-07 Kollmorgen Corporation Densitometer method and system for identifying and analyzing printed targets
FI78025C (fi) * 1987-08-31 1989-06-12 Valtion Teknillinen Foerfarande foer kvalitetskontroll av tryckning.
DE3812099C2 (de) * 1988-04-12 1995-01-26 Heidelberger Druckmasch Ag Verfahren zur Farbsteuerung einer Offsetdruckmaschine
JP2786216B2 (ja) * 1988-12-20 1998-08-13 東芝メカトロニクス株式会社 絵柄面積率測定装置
CH680117A5 (enrdf_load_stackoverflow) * 1989-07-15 1992-06-30 Bobst Sa
DE4109744C2 (de) * 1991-03-25 1994-01-20 Heidelberger Druckmasch Ag Verfahren zur Ermittlung der Flächendeckung einer druckenden Vorlage, insbes. einer Druckplatte, sowie Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
JP3041439U (ja) 1997-09-19
ATE151348T1 (de) 1997-04-15
US5215011A (en) 1993-06-01
EP0512448A1 (fr) 1992-11-11
JPH05147197A (ja) 1993-06-15
CH686357A5 (fr) 1996-03-15
CA2067994C (en) 1996-11-26
TW276319B (enrdf_load_stackoverflow) 1996-05-21
ES2100248T3 (es) 1997-06-16
DE69218821D1 (de) 1997-05-15
KR970000777B1 (ko) 1997-01-20
DE69218821T2 (de) 1997-10-16
DK0512448T3 (da) 1997-10-27
KR920021317A (ko) 1992-12-18
CA2067994A1 (en) 1992-11-07

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