EP0096227A2 - Device for scanning a printing plate - Google Patents

Device for scanning a printing plate Download PDF

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Publication number
EP0096227A2
EP0096227A2 EP83104505A EP83104505A EP0096227A2 EP 0096227 A2 EP0096227 A2 EP 0096227A2 EP 83104505 A EP83104505 A EP 83104505A EP 83104505 A EP83104505 A EP 83104505A EP 0096227 A2 EP0096227 A2 EP 0096227A2
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EP
European Patent Office
Prior art keywords
printing
printing plate
scanning
plate
optical
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Granted
Application number
EP83104505A
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German (de)
French (fr)
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EP0096227B1 (en
EP0096227A3 (en
Inventor
Jürgen Rehder
Siegfried Schuhmann
Gerd Steiner
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Manroland AG
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MAN Roland Druckmaschinen AG
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Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT83104505T priority Critical patent/ATE36276T1/en
Publication of EP0096227A2 publication Critical patent/EP0096227A2/en
Publication of EP0096227A3 publication Critical patent/EP0096227A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0027—Devices for scanning originals, printing formes or the like for determining or presetting the ink supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/46—Printing operation controlled by code indicia on printing plate or substate

Definitions

  • the invention relates to a device for scanning printing plates by means of a number of optical-electrical transducers arranged along the printing plate and at an angle thereto, which receive the light remitted by the printing plate from a light source arranged along these transducers and when moving transversely to the printing plate in all Scan partial areas.
  • a device of this type is known from DE-PS 3 029 273.
  • the use of such a fine area grid requires the possibility of measuring the predetermined subfield of the printing plate, ie it must be ensured that light emitted from outside the measuring surface, ie the predetermined subfield, including diffracted light, is faded out.
  • the measurement of the individual subfield must not be falsified by changes in the distance of the pressure plate, that is to say the measuring surface, relative to the measuring apparatus.
  • a pressure plate can have deformations that cause 10 mm changes in distance. Sucking the printing plate firmly onto its base is complex and does not always eliminate the problem.
  • the invention is therefore based on the object of improving a device for scanning printing plates of the type described above in such a way that the measurement of narrowly dimensioned, sharply delimited partial areas is possible and negative effects due to changes in distance from the measuring area are avoided.
  • the measurement results are to be improved in that a common quadrant is selected accordingly for the angular position of the light source and of the optical-electrical transducers, based on the extent of the printing plate and the standards established thereon.
  • the arrangement should be chosen so that negative influences due to the surface structure, which cause unpredictable reflections, and image errors and distortions due to an angle that is too large compared to the plate standards are avoided.
  • an angle of between 60 ° has proved to 45 0 'relative to the plate normal, this range of angles with respect to view the negative influences described above as optimal.
  • a favorable embodiment in terms of the problem of preventing measured value deviations when the distance between the printing plate and measuring apparatus changes is to arrange at least one reflector for the normal light source, which represents an additional lighting path in such a way that the changes in intensity due to changes in distance are compensated for.
  • the pressure plate 1 is fastened to a carriage 2 and is moved for scanning below a scanning device 3.
  • the scanning device consists of an optical-electrical converter 4 with a corresponding sensor 5, two light sources 6, 7 and a cover 8.
  • the longitudinal extent of the pressure plate 1, i.e. the direction in which the printing process takes place corresponds to arrow 9 in FIG. 2; A plurality of optical-electrical transducers 4, 4 ′ etc. are arranged in this direction, so the carriage 2 is moved transversely to this row of transducers 4 or transversely to the pressure plate 1.
  • the partial areas or measuring areas 10 to be measured correspond to the openings 11, 11 ', 11 "of the diaphragms 12, 12', 12" (FIG. 3) which, for the purpose of absorption of the false light entering the measuring channel 13b, in the chambers 13a.
  • the measuring channel 13b consists of low-reflection black plastic.
  • the transducers 4 are arranged at an angle of approximately 45 ° or more with respect to the plate normal 14, the light sources 6 and 7 in the same quadrant.
  • the light source can be switched over, the light source 6 being a long-wave filament lamp and the light source 7 being a short-wave gas discharge lamp.
  • a filament lamp is suitable for scanning a copper / chrome plate
  • the gas discharge lamp is suitable for scanning an aluminum plate.
  • FIG. 2 shows the approximate dimensioning of the measuring surface or transducer in relation to the ink metering width normally provided on the printing press, for example by means of mechanical slides 20.
  • the geometric staircase 19 through which the temporal Sequence of the measurement of the measuring surfaces is symbolically explained.
  • homogeneous templates 16 for comparing the characteristic curves of the various sensors 5 and partial areas 17 for carrying additional information are provided.
  • a partial area 18 has a certain ratio of printing to non-printing area and can serve to standardize the measured values.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

A machine for scanning printing plates to determine the ratio of "printing" to "non-printing" area for pre-adjustment of the ink dosing elements of a printing machine has an array of electronic photo-sensors, each sensor being disposed in a channel having low-reflection chambers which permit sharp delimination of resolution elements on the printing plate and ensure high definition scanning of different types of printing plates under practical conditions. Preferably the diaphragms dividing the channel into chambers have greater spacing at greater distances from the element sensed on the printing plate. To accommodate printing plates of different materials, means are provided for selecting the wave length of the light source. To prevent measurement error due to changes in the distance from the printing plate to the light source and sensor array, the photosensor array is preferably directed or aimed 60 DEG to 45 DEG with respect to the normal vector of the printing plate, and the light source is in the same quadrant as the photo-sensor array at an angle of 0 DEG to 45 DEG with respect to the normal vector. Automatic calibration, automatic printing plate size determination, automatic sensing of identification information engraved on the printing plate, and a stairstep scan to increase the scanning rate are provided by suitable procedures executed by a microcomputer controlling the scanning process and analyzing, adjusting, and interpreting data received from the sensor array.

Description

Die Erfindung betrifft eine Vorrichtung zur Abtastung von Druckplatten mittels einer Anzahl von längs der Druckplatte und in einem Winkel dazu angeordneter optisch-elektrischer Wandler, die das von der Druckplatte remittierte Licht einer längs dieser Wandler angeordneten Lichtquelle aufnehmen und bei Bewegung quer zur Druckplatte diese in allen Teilflächen abtasten.The invention relates to a device for scanning printing plates by means of a number of optical-electrical transducers arranged along the printing plate and at an angle thereto, which receive the light remitted by the printing plate from a light source arranged along these transducers and when moving transversely to the printing plate in all Scan partial areas.

Eine Vorrichtung dieser Gattung ist durch die DE-PS 3 029 273 bekannt.A device of this type is known from DE-PS 3 029 273.

Zur automatisch, rechnergesteuerten Voreinstellung von Druckmaschinen ist es unter anderem erforderlich zu wissen, welches Verhältnis die "druckende" zur "nicht druckenden"Fläche in druckmaschinenabhängigen, streifenförmigen Zonen bilden. Zur Anpassung an unterschiedliche Plattentypen, wie Aluminiumplatten und Chrom-Kupferplatten und variable Plattenformate, wie verschiedene Druckmaschinen mit unterschiedlichen Zonenbreiten, ist es erforderlich, die Druckplatten in einer Abtasteinrichtung mit einem hinreichend feinen Flächenraster zu messen. Ein typischer Wert für das Verhältnis von Druckplatten fläche zur Messfläche ist 1:50000.For the automatic, computer-controlled presetting of printing presses, it is necessary, among other things, to know what ratio the "printing" to the "non-printing" area form in press-dependent, strip-like zones. To adapt to different plate types, such as aluminum plates and chrome-copper plates and variable plate formats, such as different printing presses with different zone widths, it is necessary to measure the printing plates in a scanning device with a sufficiently fine area grid. A typical value for the ratio of printing plate area to measuring area is 1: 50000.

Die Anwendung eines derart feinen Flächenrasters erfordert aber die Möglichkeit der meßtechnischen Erfassung des vorbestimmten Teilfeldes der Druckplatte, d.h. es muß sichergestellt sein, daß von außerhalb der Meßfläche, also des vorbestimmten Teilfeldes abgestrahltes Licht einschließlich gebeugten Lichtes, ausgeblendet wird. Die Messung des einzelnen Teilfeldes darf außerdem durch Abstandsänderungen der Druckplatte, also der Meßfläche gegenüber der Meßapparatur nicht verfälscht werden. Eine Druckplatte kann aber in der Praxis durchaus Verformungen aufweisen, die 10mm Abstandsänderungen verursachen. Ein Festsaugen der Druckplatte auf ihrer Unterlage ist aufwendig und beseitigt nicht immer das Problem.However, the use of such a fine area grid requires the possibility of measuring the predetermined subfield of the printing plate, ie it must be ensured that light emitted from outside the measuring surface, ie the predetermined subfield, including diffracted light, is faded out. In addition, the measurement of the individual subfield must not be falsified by changes in the distance of the pressure plate, that is to say the measuring surface, relative to the measuring apparatus. In practice, however, a pressure plate can have deformations that cause 10 mm changes in distance. Sucking the printing plate firmly onto its base is complex and does not always eliminate the problem.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Vorrichtung zur Abtastung von Druckplatten oben beschriebener Gattung so zu verbessern, daß die Ausmessung eng bemessener, scharf begrenzter Teilflächen möglich ist und negative Auswirkungen aufgrund von Abstandsänderungen von der Meßfläche vermieden sind.The invention is therefore based on the object of improving a device for scanning printing plates of the type described above in such a way that the measurement of narrowly dimensioned, sharply delimited partial areas is possible and negative effects due to changes in distance from the measuring area are avoided.

Die Lösung der Aufgabe erfolgt durch die im Kennzeichen des Hauptanspruchs beschriebenen Merkmale. Die aufeinanderfolgende Ausmessung von Teilflächen der Druckplatte verringert den elektronischen Aufwand erheblich; durch die Anordnung von mit Blenden versehenen Kammern vor dem Wandler ist eine entsprechende Auflösung der Meßflächen erst möglich. Damit können auch alle gängigen Plattenarten abgetastet werden. Die Anordnung der Blenden vom Meßfeld aus gesehen in immer größeren Abständen bewirkt eine ganz scharfe Abgrenzung.The problem is solved by the features described in the characterizing part of the main claim. The successive measurement of partial areas of the printing plate considerably reduces the electronic effort; A corresponding resolution of the measuring surfaces is only possible through the arrangement of chambers provided with screens in front of the transducer. This means that all common types of plates can be scanned. The arrangement of the diaphragms from the measuring field at ever greater distances results in a very sharp delimitation.

Die wahlweise Zuordnung einer Lichtquelle je nach Plattenart mit kurzwelligem oder langwelligem spektralen Maximum verbessert weiterhin die Messung unterschiedlicher Druckplatten.The optional assignment of a light source depending on the plate type with short-wave or long-wave spectral maximum further improves the measurement of different printing plates.

Weiterhin sind die Meßergebnisse dadurch zu verbessern, daß bezogen auf die Erstreckung der Druckplatte und der darauf errichteten Normalen für die Winkellage der Lichtquelle und der optisch-elektrischen Wandler entsprechend ein gemeinsamer Quadrant gewählt wird. Die Anordnung ist dabei so zu wählen, daß negative Einflüsse aufgrund der Oberflächenstruktur, die unvoraussehbare Reflexionen bewirken, und Abbildungsfehler und Verzerrungen aufgrund eines zu großen Winkels gegenüber der Plattennormen vermieden sind. Als normal günstiger Winkel für die Wandler hat sich ein Winkel von zwischen 60° bis 450 'gegenüber der Plattennormalen erwiesen, dieser Winkelbereich ist bezüglich der oben beschriebenen negativen Einflüsse als optimal anzusehen.Furthermore, the measurement results are to be improved in that a common quadrant is selected accordingly for the angular position of the light source and of the optical-electrical transducers, based on the extent of the printing plate and the standards established thereon. The arrangement should be chosen so that negative influences due to the surface structure, which cause unpredictable reflections, and image errors and distortions due to an angle that is too large compared to the plate standards are avoided. Than normal favorable angle for the converter, an angle of between 60 ° has proved to 45 0 'relative to the plate normal, this range of angles with respect to view the negative influences described above as optimal.

Eine günstige Ausgestaltung im Sinne der Problemstellung Verhindern von Meßwertabweichungen bei Veränderung des Abstands Druckplatte/Meßapparatur besteht darin, zur normalen Lichtquelle mindestens einen Reflektor anzuordnen, der einen zusätzlichen Beleuchtungsweg darstellt derart, daß die Intensitätsänderungen aufgrund von Abstandsänderungen kompensiert werden.A favorable embodiment in terms of the problem of preventing measured value deviations when the distance between the printing plate and measuring apparatus changes is to arrange at least one reflector for the normal light source, which represents an additional lighting path in such a way that the changes in intensity due to changes in distance are compensated for.

Ein Ausführungsbeispiel der Erfindung wird anschließend anhand einer schematischen Zeichnung noch näher erläutert. Es zeigt im einzelnen

  • Fig. 1 eine Ansicht der Vorrichtung,
  • Fig. 2 eine Draufsicht der Vorrichtung nach Fig. 1 mit abgehobener Abdeckhaube und
  • Fig. 3 einen optisch-elektrischen Wandler in vergrößertem Maßstab mit abgenommener Vorderwand.
An embodiment of the invention will be explained in more detail with reference to a schematic drawing. It shows in detail
  • 1 is a view of the device,
  • Fig. 2 is a plan view of the device of FIG. 1 with the cover and
  • Fig. 3 shows an optical-electrical converter on an enlarged scale with the front wall removed.

Die Druckplatte 1 ist auf einem Wagen 2 befestigt und wird zum Abtasten unterhalb einer Abtastvorrichtung 3 verfahren. Die Abtastvorrichtung besteht aus einem optisch-elektrischen Wandler 4 mit entsprechendem Sensor 5, zwei Lichtquellen 6, 7 und einer Abdeckhaube 8. Die Längserstreckung der Druckplatte 1, d.h. die Richtung, in der der Druckvorgang abläuft, entspricht dem Pfeil 9 in Fig. 2; in dieser Richtung ist eine Mehrzahl von optisch-elektrischen Wandlern 4, 4' etc. angeordnet, die Bewegung des Wagens 2 erfolgt also quer zu dieser Reihe von Wandlern 4 bzw. quer zur Druckplatte 1.The pressure plate 1 is fastened to a carriage 2 and is moved for scanning below a scanning device 3. The scanning device consists of an optical-electrical converter 4 with a corresponding sensor 5, two light sources 6, 7 and a cover 8. The longitudinal extent of the pressure plate 1, i.e. the direction in which the printing process takes place corresponds to arrow 9 in FIG. 2; A plurality of optical-electrical transducers 4, 4 ′ etc. are arranged in this direction, so the carriage 2 is moved transversely to this row of transducers 4 or transversely to the pressure plate 1.

Die auszumessenden Teilflächen bzw. Meßflächen 10 entsprechen den Öffnungen 11, 11', 11" der Blenden 12, 12', 12" (Fig. 3), die zwecks Absorption des in den Meßkanal 13b eindringenden Fehllichtes in den Kammern 13a. Der Meßkanal 13b besteht aus reflexionsarmen schwarzem Kunststoff. Die Wandler 4 sind in einem Winkel von ca. 45° oder mehr gegenüber der Plattennormalen 14 angeordnet, die Lichtquellen 6 und 7 in dem gleichen Quadranten.The partial areas or measuring areas 10 to be measured correspond to the openings 11, 11 ', 11 "of the diaphragms 12, 12', 12" (FIG. 3) which, for the purpose of absorption of the false light entering the measuring channel 13b, in the chambers 13a. The measuring channel 13b consists of low-reflection black plastic. The transducers 4 are arranged at an angle of approximately 45 ° or more with respect to the plate normal 14, the light sources 6 and 7 in the same quadrant.

Je nach abzutastender Druckplatte, Kupfer./Chrom- oder Aluplatte, ist die Lichtquelle umschaltbar, wobei die Lichtquelle 6 eine langwellige Glüh-Fadenlampe, die Lichtquelle 7 eine kurzwellige Gasentladungslampe ist. Eine Glüh-fadenlampe ist zur Abtastung einer Kupfer/Chromplatte, die Gasentladungslampe zur Abtastung einer Aluplatte geeignet.Depending on the pressure plate to be scanned, copper / chrome or aluminum plate, the light source can be switched over, the light source 6 being a long-wave filament lamp and the light source 7 being a short-wave gas discharge lamp. A filament lamp is suitable for scanning a copper / chrome plate, the gas discharge lamp is suitable for scanning an aluminum plate.

In Fig. 2 ist die ungefähre Dimensionierung der Meßfläche, bzw. Wandler im Verhältnis zu der überlicherweise an der Druckmaschine vorgesehenen Farbdosierbreite, z.B. durch mechanische Schieber 20 darstellt. Dort ist auch die geometrische Treppe 19 dargestellt, durch welche die zeitliche Abfolge der Ausmessung der Meßflächen symbolisch erläutert ist. Außerdem sind homogene Vorlagen 16 zur Abgleichung der Kennlinien der verschiedenen Sensoren 5 sowie Teilflächen 17 zur Mitführung weiterer Informationen vorgesehen. Eine Teilfläche 18 besitzt ein bestimmtes Verhältnis von druckender zu nicht druckender Fläche und kann zur Normierung der Meßwerte dienen.2 shows the approximate dimensioning of the measuring surface or transducer in relation to the ink metering width normally provided on the printing press, for example by means of mechanical slides 20. The geometric staircase 19 through which the temporal Sequence of the measurement of the measuring surfaces is symbolically explained. In addition, homogeneous templates 16 for comparing the characteristic curves of the various sensors 5 and partial areas 17 for carrying additional information are provided. A partial area 18 has a certain ratio of printing to non-printing area and can serve to standardize the measured values.

Claims (9)

1.) Vorrichtung zur Abtastung von Druckplatten mittels einer Anzahl von längs der Druckplatte und in einem Winkel dazu angeordneter optisch-elektrischer Wandler, die das von der Druckplatte remittierte Licht einer längs dieser Wandler angeordneten Lichtquelle aufnehmen und bei Bewegung quer zur Druckplatte diese in allen Teilflächen abtasten, dadurch gekennzeichnet, daß die Druckplatte (1) in allen Teilbereichen durch die Wandler (4) entlang einer geometrischen Treppe (19) während ihrer Bewegung senkrecht zur Anordnung der Wandler (4) durch deren Umschalten abtastbar und die selektive Messung jeder Teilfläche (10) mit einer dem optisch-elektrischen Wandler (4) vorgesetzten Anordnung von reflexionsarmen Kammern (13a) erreichbar ist, welche durch Blenden (11, 12) in Form der projizierten Teilflächen (10) voneinander getrennt sind.1.) Device for scanning printing plates by means of a number of optical-electrical transducers arranged along the printing plate and at an angle thereto, which receive the light remitted by the printing plate from a light source arranged along these transducers and when moving transversely to the printing plate, these in all partial areas Scanning, characterized in that the pressure plate (1) can be scanned in all partial areas by the transducers (4) along a geometric staircase (19) during their movement perpendicular to the arrangement of the transducers (4) by switching them over and the selective measurement of each partial area (10 ) can be reached with an arrangement of low-reflection chambers (13a) which are arranged in front of the optical-electrical converter (4) and which are separated from one another by diaphragms (11, 12) in the form of the projected partial areas (10). 2.) Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Abstand und die Anzahl der Blenden (11, 12; 11', 12', 11", 12") zwischen den reflexionsarmen Kammern (13a) und dem optisch-elektronischen Wandler (4) so festgelegt ist, daß die Intensität von reflektiertem und gebeugtem Licht an den Blenden im Verhältnis zum empfangenen gesamten, von der Druckplatte (1) reflektierten Lichtstrom einen Extremwert annimmt.2.) Device according to claim 1, characterized in that the distance and the number of diaphragms (11, 12; 11 ', 12', 11 ", 12") between the low-reflection chambers (13a) and the optical-electronic converter ( 4) is set so that the intensity of reflected and diffracted light on the aperture in Ver ratio to the received total luminous flux reflected by the pressure plate (1) assumes an extreme value. 3.) Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Beleuchtungsquellen (6, 7) und/oder die optisch-elektronischen Wandler (4) so ausgebildet sind, daß wahlweise in einem begrenzten optischen Spektrum die Abtastung vornehmbar ist.3.) Device according to claim 1 or 2, characterized in that the illumination sources (6, 7) and / or the optical-electronic converter (4) are designed such that the scanning can be carried out optionally in a limited optical spectrum. 4.) Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Lichtstrom gerichtet ist und unter einem Winkel zwischen der Plattennormalen (14) und 45° zur Plattennormalen (14) einfällt.4.) Device according to one of claims 1 to 3, characterized in that the luminous flux is directed and incident at an angle between the plate normal (14) and 45 ° to the plate normal (14). 5.) Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Hauptempfangsrichtung des optisch-elektronischen Wandlers (4) mit der Richtung des einfallenden Lichtstromes zusammenfällt oder kleiner gegenüber der Plattennormalen (14) ist als der einfallende Lichtstrom.5.) Device according to one of claims 1 to 4, characterized in that the main receiving direction of the optical-electronic converter (4) coincides with the direction of the incident luminous flux or is smaller than the plate normal (14) than the incident luminous flux. 6.) Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die optisch-elektrischen Wandler (4) keinerlei Abgleichelemente enthalten und ihre individuelle Obertragungsfunktion durch parallele Abtastung von homogenen Vorlagen (16) mit der Druckplatte (1) bestimmbar ist.6.) Device according to one of claims 1 to 5, characterized in that the optical-electrical converter (4) contain no adjustment elements and their individual transfer function can be determined by parallel scanning of homogeneous originals (16) with the printing plate (1). 7.) Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß vorbestimmte Teilflächen (18) der Druckplatte, die ein festes Verhältnis von druckender zu nicht druckender Fläche besitzen, zur Normierung der Messwerte benutzbar sind.7.) Device according to one of claims 1 to 6, characterized in that predetermined partial areas (18) of the printing plate, which have a fixed ratio of printing to non-printing area, can be used to standardize the measured values. 8.) Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Teilflächen (17) selbst und/oder in Kombination mit zusätzlichen Mustern in vorbestimmten Stellen der Druckplatten das Mitführen von Informationen ermöglichen (Farbe, Maschinen-und Auftragsnummer etwa).8.) Device according to claim 7, characterized in that the partial surfaces (17) themselves and / or in combination with additional patterns in predetermined locations of the printing plates enable the carrying of information (color, machine and order number approximately). 9.) Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Druckplatte auf einer Unterlage (2) abgetastet wird, deren Reflektionsvermögen größer oder vorzugsweise kleiner ist gegen alle vorkommenden Druckplatten und die automatische Formatbestimmung ermöglicht, indem der Vorrat aller gespeicherter Messwerte mit dem bekannten Wert der Unterlage verglichen wird.9.) Device according to one of claims 1 to 8, characterized in that the printing plate is scanned on a base (2), the reflectivity of which is greater or preferably less against all occurring printing plates and enables the automatic format determination by the supply of all stored measured values is compared with the known value of the document.
EP83104505A 1982-06-03 1983-05-07 Device for scanning a printing plate Expired EP0096227B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83104505T ATE36276T1 (en) 1982-06-03 1983-05-07 DEVICE FOR SCANNING PRINTING PLATES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3220800A DE3220800C2 (en) 1982-06-03 1982-06-03 Device for scanning printing plates
DE3220800 1982-06-03

Publications (3)

Publication Number Publication Date
EP0096227A2 true EP0096227A2 (en) 1983-12-21
EP0096227A3 EP0096227A3 (en) 1985-05-22
EP0096227B1 EP0096227B1 (en) 1988-08-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104505A Expired EP0096227B1 (en) 1982-06-03 1983-05-07 Device for scanning a printing plate

Country Status (5)

Country Link
US (1) US4586148A (en)
EP (1) EP0096227B1 (en)
JP (1) JPS58225307A (en)
AT (1) ATE36276T1 (en)
DE (2) DE3220800C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142470A1 (en) 1983-11-04 1985-05-22 GRETAG Aktiengesellschaft Method and device for judging the printing quality of a printed object, preferably printed by an offset printing machine, and offset printing machine provided with such a device
EP0143228A1 (en) * 1983-09-21 1985-06-05 Albert-Frankenthal AG Method and apparatus for controlling the regulating means of the colour zones of an ink supply
WO2008049510A1 (en) * 2006-10-23 2008-05-02 Hell Gravure Systems Gmbh & Co. Kg Method and apparatus for assessing the quality of at least one printing forme cylinder, and a production line which is equipped with an apparatus of this type

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339552A1 (en) * 1983-11-02 1985-05-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach PRESETTING PRINTING MACHINES
EP0143744B1 (en) * 1983-11-04 1988-01-13 GRETAG Aktiengesellschaft Method and device for rating the printing quality and/or controlling the ink supply in an offset printing machine, and offset printing machine with such a device
JPS60263807A (en) * 1984-06-12 1985-12-27 Dainippon Screen Mfg Co Ltd Instument for inspecting pattern defect of printed wiring board
US5182721A (en) * 1985-12-10 1993-01-26 Heidelberger Druckmaschinen Aktiengesellschaft Process and apparatus for controlling the inking process in a printing machine
DE3643720C2 (en) * 1986-12-20 1994-03-10 Heidelberger Druckmasch Ag Method for determining control variables for the inking unit of printing machines
US4967379A (en) * 1987-12-16 1990-10-30 Gretag Aktiengesellschaft Process for the ink control or regulation of a printing machine by comparing desired color to obtainable color data
US4975862A (en) * 1988-01-14 1990-12-04 Gretag Aktiengesellschaft Process and apparatus for the ink control of a printing machine
US5696588A (en) * 1993-06-30 1997-12-09 Wertheim; Abe Automatic plate scanner
US6318260B1 (en) 1997-05-05 2001-11-20 Quad/Tech, Inc. Ink key control in a printing press including lateral ink spread, ink saturation, and back-flow compensation
US5967049A (en) * 1997-05-05 1999-10-19 Quad/Tech, Inc. Ink key control in a printing press including lateral ink spread, ink saturation, and back-flow compensation
AU9399398A (en) * 1997-09-22 1999-04-12 Intelligent Reasoning Systems, Inc. Automated visual inspection system and process for detecting and classifying defects
JP4216001B2 (en) * 2002-05-21 2009-01-28 大日本スクリーン製造株式会社 Ink supply method for printing press and ink supply device for printing press
JP2006001049A (en) * 2004-06-15 2006-01-05 Fuji Photo Film Co Ltd Image recorder
US8534194B2 (en) * 2006-10-23 2013-09-17 Bobst Bielefeld Gmbh Rotary printing press and method for adjusting a cylinder thereof
BRPI0717318A2 (en) * 2006-10-23 2013-10-22 Fischer & Krecke Gmbh ROTATING PRINTER MACHINE AND METHOD FOR ADJUSTING A CYLINDER
DE602006012688D1 (en) * 2006-10-23 2010-04-15 Fischer & Krecke Gmbh Method, Monatagevorrichtung and control unit for adjusting a roller in a printing press
US8509487B2 (en) * 2007-04-19 2013-08-13 Avago Technologies General Ip (Singapore) Pte. Ltd. System and method for optically measuring a parameter of an object

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389265A (en) * 1965-05-03 1968-06-18 Du Pont Colorimeter for measuring the tristimulus coefficients of color in a laterally moving material
DE3009690A1 (en) * 1980-03-13 1981-09-17 Heimann Gmbh, 6200 Wiesbaden Measuring mean grey scale value of reflecting surface - using matrix of narrow prisms with sources and receivers

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671128A (en) * 1969-08-25 1972-06-20 Battelle Development Corp Automatic cloud condensation nuclei counter
US3650204A (en) * 1970-01-22 1972-03-21 Addressograph Multigraph Reprography machine controlled by information on master
US3898928A (en) * 1971-01-12 1975-08-12 Ricoh Kk Master switch to actuate dampener in automatic duplicator
SE375726B (en) * 1972-11-07 1975-04-28 Tolerans Ab
GB1484947A (en) * 1973-11-02 1977-09-08 Addressograph Multigraph Duplicating machines
US3965356A (en) * 1975-04-30 1976-06-22 Measurex Corporation Apparatus for measuring a predetermined characteristic of a material using two or more wavelengths of radiation
US3958509A (en) * 1974-06-13 1976-05-25 Harris Corporation Image scan and ink control system
US4041286A (en) * 1975-11-20 1977-08-09 The Bendix Corporation Method and apparatus for detecting characteristic features of surfaces
GB1576639A (en) * 1976-07-06 1980-10-08 Fairfax & Sons Ltd John Printing plate inspection apparatus
DE2728738B2 (en) * 1977-06-25 1979-05-10 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Eulrichtung for checking and regulating the coloring on printing machines
JPS5952069B2 (en) * 1977-12-15 1984-12-18 凸版印刷株式会社 Ink usage prediction device
US4180741A (en) * 1978-06-07 1979-12-25 Harris Corporation Apparatus for determining image areas for printing with calibration
JPS5624508A (en) * 1979-08-03 1981-03-09 Dainippon Printing Co Ltd Device for measuring picture area from offset printing plate
DE3029273A1 (en) * 1979-08-03 1981-02-19 Dainippon Printing Co Ltd DEVICE FOR MEASURING THE PRINT IMAGE AREA OF AN OFFSET PRINT PLATE
DE2950650A1 (en) * 1979-12-15 1981-06-19 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach DEVICE FOR OPTO-ELECTRONIC MEASURING OF THE SURFACE COVERAGE OF AN OFFSET PRINT PLATE OR OF A PRINT TEMPLATE serving to manufacture OFFSET PRINT PLATES
US4441819A (en) * 1980-10-24 1984-04-10 Dai Nippon Insatsu Kabushiki Kaisha Calibration method for printing plate picture pattern area meter
US4406545A (en) * 1981-05-07 1983-09-27 Western Electric Company, Inc. Methods of and apparatus for measuring surface areas

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389265A (en) * 1965-05-03 1968-06-18 Du Pont Colorimeter for measuring the tristimulus coefficients of color in a laterally moving material
DE3009690A1 (en) * 1980-03-13 1981-09-17 Heimann Gmbh, 6200 Wiesbaden Measuring mean grey scale value of reflecting surface - using matrix of narrow prisms with sources and receivers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143228A1 (en) * 1983-09-21 1985-06-05 Albert-Frankenthal AG Method and apparatus for controlling the regulating means of the colour zones of an ink supply
EP0142470A1 (en) 1983-11-04 1985-05-22 GRETAG Aktiengesellschaft Method and device for judging the printing quality of a printed object, preferably printed by an offset printing machine, and offset printing machine provided with such a device
EP0142469A1 (en) * 1983-11-04 1985-05-22 GRETAG Aktiengesellschaft Method and device for controlling the ink supply in an offset printing machine, and offset printing machine provided with such a device
US4660159A (en) * 1983-11-04 1987-04-21 Gretag Aktiengesellschaft Process and apparatus for the regulation of ink feed controls in an offset printing machine
US4665496A (en) * 1983-11-04 1987-05-12 Gretag Aktiengesellschaft Process and apparatus for the evaluation of the printing quality of a printed product by an offset printing machine
WO2008049510A1 (en) * 2006-10-23 2008-05-02 Hell Gravure Systems Gmbh & Co. Kg Method and apparatus for assessing the quality of at least one printing forme cylinder, and a production line which is equipped with an apparatus of this type

Also Published As

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DE3220800C2 (en) 1986-10-30
US4586148A (en) 1986-04-29
ATE36276T1 (en) 1988-08-15
DE3220800A1 (en) 1983-12-08
JPS58225307A (en) 1983-12-27
EP0096227B1 (en) 1988-08-10
EP0096227A3 (en) 1985-05-22
DE3377631D1 (en) 1988-09-15

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