EP0096277B1 - Measuring table for printed sheets - Google Patents

Measuring table for printed sheets Download PDF

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Publication number
EP0096277B1
EP0096277B1 EP83105075A EP83105075A EP0096277B1 EP 0096277 B1 EP0096277 B1 EP 0096277B1 EP 83105075 A EP83105075 A EP 83105075A EP 83105075 A EP83105075 A EP 83105075A EP 0096277 B1 EP0096277 B1 EP 0096277B1
Authority
EP
European Patent Office
Prior art keywords
measuring
improvement
hold
down plate
accordance
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
Application number
EP83105075A
Other languages
German (de)
French (fr)
Other versions
EP0096277A2 (en
EP0096277A3 (en
Inventor
Dieterich Roland Kamillus Leuerer
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0096277A2 publication Critical patent/EP0096277A2/en
Publication of EP0096277A3 publication Critical patent/EP0096277A3/en
Application granted granted Critical
Publication of EP0096277B1 publication Critical patent/EP0096277B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control

Definitions

  • the invention relates to a device on a measuring table for printed sheets according to the preamble of claim 1.
  • Measuring tables for printed sheets with a moving densitometer are e.g. made known by «ROLAND Stren 40».
  • a printed sheet with a printed measuring field strip is placed against a stop.
  • An electromotive-powered measuring head then moves the measuring field bar and transmits the measured values to a microcomputer. So that the or the measuring head of the densitometer is always at the same distance from the measuring bar that is also printed, the densitometer head is supported by a roller on the sheet itself. It cannot be avoided that the densitometer head moves over the arch to form wrinkles. The associated change in distance of the measuring head from the measuring field bar can lead to inaccurate measured values.
  • the invention has for its object to provide a device on a measuring table for recording densitometric color values by means of a moving densitometer, with which it is avoided that the sheet to be measured bulges at the measuring points during the measuring process by the moving densitometer.
  • the advantages that can be achieved with the invention are, in particular, that it can be prevented in a simple manner that the sheet to be measured densitometrically during the measurement process by the migrating densitometer does not touch the support element of the densitometer directly, thus avoiding the risk that displacements and bulging of the Paper can lead to measurement inaccuracies. It is also possible to measure arcs in which the measuring field bar can be attached at any point on the arc.
  • a lower horizontal contact strip 2 is fastened on a table top 1 of a measuring desk known per se for the densitometric evaluation of printed sheets.
  • This contact strip 2 is longer than the maximum sheet width to be measured.
  • a right side stop rail 3 is arranged adjoining it, and a left side stop rail 4 is also arranged at a distance «a» from it, but also adjoining the contact strip 2, and is fitted between the right and left side stop rails 3, 4 and adjoining the contact strip 2 a removable guide rail 6 is provided. It is preferably made of metal like the contact strip 2 and the two side stop rails 3 and 4.
  • the contact strip 2, side stop rails 3 and 4 and the contact rail 6 preferably have the same thickness.
  • a hold-down plate 7 is provided for the exact holding down of the sheet to be measured on the table top 1.
  • It is preferably made of a transparent plastic, e.g. B. plexiglass. In its lower third, it is provided with a horizontal measuring slot 8, approximately 8 mm wide. This measuring slot 8 ends approx. 20 mm in front of the side edges of the hold-down plate 7.
  • a plurality of ferromagnetic metal round blanks 9 are let into the hold-down plate 7 in a horizontal direction at a distance “b” from one another.
  • the metal blanks 9 each lie on a pole face of DC ring magnets 11 arranged in openings in the table top 1.
  • a horizontal insertion slot 12 is incorporated in the table top 1. This insertion slot 12 is longer than the maximum sheet width, so that a sheet can be easily inserted into this slot 12 as soon as the contact rail 6 is raised slightly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Description

Die Erfindung betrifft eine Einrichtung an einem Messtisch für bedruckte Bogen entsprechend dem Oberbegriff des Patentanspruchs 1.The invention relates to a device on a measuring table for printed sheets according to the preamble of claim 1.

Messtische für bedruckte Bogen mit einem wandernden Densitometer sind z.B. durch «ROLAND Nachrichten 40» bekannt geworden. Bei diesem Messtisch wird ein bedruckter Bogen mit einer aufgedruckten Messfeldleiste an einen Anschlag angelegt. Anschliessend fährt ein elektromotorisch angetriebener Messkopf die Messfeldleiste ab und übermittelt die gemessenen Werte an einen Microcomputer. Damit die oder der Messkopf des Densitometers immer den gleichen Abstand von der mitgedruckten Messleiste hat, wird der Densitometerkopf über eine Rolle auf dem Bogen selbst abgestützt. Hierbei lässt sich nicht vermeiden, dass es bei dem Wandervorgang des Densitometerkopfes über den Bogen zur Faltenbildung kommt. Die hiermit verbundene Abstandsänderung des Messkopfes von der Messfeldleiste kann zu ungenauen Messwerten führen.Measuring tables for printed sheets with a moving densitometer are e.g. made known by «ROLAND Nachrichten 40». With this measuring table, a printed sheet with a printed measuring field strip is placed against a stop. An electromotive-powered measuring head then moves the measuring field bar and transmits the measured values to a microcomputer. So that the or the measuring head of the densitometer is always at the same distance from the measuring bar that is also printed, the densitometer head is supported by a roller on the sheet itself. It cannot be avoided that the densitometer head moves over the arch to form wrinkles. The associated change in distance of the measuring head from the measuring field bar can lead to inaccurate measured values.

Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung an einem Messtisch zur Erfassung von densitometrischen Farbwerten mittels eines wandernden Densitometers zu schaffen, mit der vermieden wird, dass während des Messvorganges durch das wandernde Densitometer der zu messende Bogen an den Messstellen sich aufwölben kann.The invention has for its object to provide a device on a measuring table for recording densitometric color values by means of a moving densitometer, with which it is avoided that the sheet to be measured bulges at the measuring points during the measuring process by the moving densitometer.

Diese Aufgabe wird durch den Gegenstand des Patentanspruchs 1 gelöst.This object is achieved by the subject matter of patent claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass auf einfache Weise verhindert werden kann, dass der densitometrisch zu messende Bogen während des Messvorgangs durch das wandernde Densitometer nicht direkt vom Stützelement des Densitometers berührt und so die Gefahr vermieden wird, dass Verschiebungen und Aufwölben des Papiers zu Messwertungenauigkeiten führen können. Es ist möglich, auch Bogen zu messen, bei denen die Messfeldleiste an beliebigen Stellen des Bogens angebracht sein kann.The advantages that can be achieved with the invention are, in particular, that it can be prevented in a simple manner that the sheet to be measured densitometrically during the measurement process by the migrating densitometer does not touch the support element of the densitometer directly, thus avoiding the risk that displacements and bulging of the Paper can lead to measurement inaccuracies. It is also possible to measure arcs in which the measuring field bar can be attached at any point on the arc.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen:

  • Fig. 1 eine Draufsicht auf die erfindungsgemässe Einrichtung,
  • Fig. 2 einen Schnitt 11-11 in Fig. 1.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
  • 1 is a plan view of the device according to the invention,
  • 2 shows a section 11-11 in Fig. 1st

Auf einer Tischplatte 1 eines an und für sich bekannten Messpultes zur densitometrischen Auswertung von bedruckten Bogen ist eine untere waagrechte Anlegeleiste 2 befestigt. Diese Anlegeleiste 2 ist länger als die maximal auszumessende Bogenbreite. An sie anstossend ist eine rechte Seitenanschlagschiene 3 angeordnet, und von ihr in einem Abstand «a» entfernt, ebenfalls an die Anlegeleiste 2 anstossend, eine linke Seitenanschlagschiene 4. Zwischen rechte und linke Seitenanschlagschiene 3, 4 eingepasst und an der Anlegeleiste 2 anliegend, ist eine herausnehmbare Anlegeschiene 6 vorgesehen. Sie ist vorzugsweise wie die Anlegeleiste 2 und die beiden Seitenanschlagschienen 3 und 4 aus Metall angefertigt. Anlegeleiste 2, Seitenanschlagschiene 3 und 4 und die Anlegeschiene 6 haben vorzugsweise die gleiche Dicke. Zum exakten Niederhalten des zu messenden Bogens auf der Tischplatte 1 ist eine Niederhalteplatte 7 vorgesehen. Sie besteht vorzugsweise aus einem durchsichtigen Kunststoff, z. B. Plexiglas. In ihrem unteren Drittel ist sie mit einem waagrechten, ca. 8 mm breiten Messschlitz 8 versehen. Dieser Messschlitz 8 endet jeweils ca. 20 mm vor den Seitenkanten der Niederhalteplatte 7.A lower horizontal contact strip 2 is fastened on a table top 1 of a measuring desk known per se for the densitometric evaluation of printed sheets. This contact strip 2 is longer than the maximum sheet width to be measured. A right side stop rail 3 is arranged adjoining it, and a left side stop rail 4 is also arranged at a distance «a» from it, but also adjoining the contact strip 2, and is fitted between the right and left side stop rails 3, 4 and adjoining the contact strip 2 a removable guide rail 6 is provided. It is preferably made of metal like the contact strip 2 and the two side stop rails 3 and 4. The contact strip 2, side stop rails 3 and 4 and the contact rail 6 preferably have the same thickness. A hold-down plate 7 is provided for the exact holding down of the sheet to be measured on the table top 1. It is preferably made of a transparent plastic, e.g. B. plexiglass. In its lower third, it is provided with a horizontal measuring slot 8, approximately 8 mm wide. This measuring slot 8 ends approx. 20 mm in front of the side edges of the hold-down plate 7.

Im oberen Drittel der Niederhalteplatte 7 sind in waagrechter Richtung in einem Abstand «b» voneinander eine Mehrzahl von ferromagnetischen Metallronden 9 von einer Unterseite der Niederhalteplatte 7 her in diese eingelassen.In the upper third of the hold-down plate 7, a plurality of ferromagnetic metal round blanks 9 are let into the hold-down plate 7 in a horizontal direction at a distance “b” from one another.

Bei auf der Tischplatte 1 aufliegender Niederhalteplatte 7 kommen die Metallronden 9 jeweils auf einer Polfläche von in Öffnungen in der Tischplatte 1 angeordneten Gleichstromringmagneten 11 zu liegen.With the hold-down plate 7 resting on the table top 1, the metal blanks 9 each lie on a pole face of DC ring magnets 11 arranged in openings in the table top 1.

Von der Anlegeschiene 6 abgedeckt, ist in der Tischplatte 1 ein waagrechter Einführungsschlitz 12 eingearbeitet. Dieser Einführungsschlitz 12 ist länger als die maximale Bogenbreite, so dass ein Bogen leicht in diesen Schlitz 12 eingeführt werden kann, sobald die Anlegeschiene 6 etwas angehoben wird.Covered by the contact rail 6, a horizontal insertion slot 12 is incorporated in the table top 1. This insertion slot 12 is longer than the maximum sheet width, so that a sheet can be easily inserted into this slot 12 as soon as the contact rail 6 is raised slightly.

Claims (5)

1. Mechanism on a measuring table, used for recording densitometrical values from a measuring field strip imprinted on a sheet-shaped material, a supported measuring head moving over this printed measuring field strip for measuring purposes, characterized by the improvement that a hold-down plate (7) for holding-down a sheet to be measured, capable of being adjusted to a registering device (2; 6), is located on a table top (1) of the measuring table.
2. Mechanism in accordance with claim 1, characterized by the improvement that the hold-down plate (7) is equipped with a horizontal measuring slot (8).
3. Mechanism in accordance with claims 1 and 2, characterized by the improvement that a plurality of ferromagnetic metal circles (9) are countersunk into the hold-down plate (7), which cooperate with annular magnets (11) located in the table top (1).
4. Mechanism in accordance with claims 1 to 3, characterized by the improvement that a registering rail (6) is provided, to which the hold-down plate (7) is capable of being adjusted.
5. Mechanism in accordance with claims 1 to 4, characterized by the improvement that a feeding- in slot (12) preferably capable of being covered by the registering rail (6), is provided in the table top (1).
EP83105075A 1982-06-03 1983-05-21 Measuring table for printed sheets Expired EP0096277B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3220799A DE3220799C2 (en) 1982-06-03 1982-06-03 Device on a measuring desk for recording densitometric values
DE3220799 1982-06-03

Publications (3)

Publication Number Publication Date
EP0096277A2 EP0096277A2 (en) 1983-12-21
EP0096277A3 EP0096277A3 (en) 1985-04-10
EP0096277B1 true EP0096277B1 (en) 1987-08-26

Family

ID=6165125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105075A Expired EP0096277B1 (en) 1982-06-03 1983-05-21 Measuring table for printed sheets

Country Status (4)

Country Link
US (1) US4568185A (en)
EP (1) EP0096277B1 (en)
JP (1) JPS593312A (en)
DE (2) DE3220799C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE61286T1 (en) * 1987-11-27 1991-03-15 Komori Printing Mach SHEET-FED ROTARY PRESS.
DE9002437U1 (en) * 1990-03-02 1990-05-03 MAN Roland Druckmaschinen AG, 6050 Offenbach Scanner for determining the color density values of print templates of variable sizes
CN105667084A (en) * 2016-02-29 2016-06-15 马宁 Printing proof detecting table

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7424516U (en) * 1974-12-05 Schlenker Grusen J Folding paper cassette for writing measuring devices
US2406716A (en) * 1942-07-29 1946-08-27 Gen Aniline & Film Corp Direct reading densitometer
US2956473A (en) * 1957-09-12 1960-10-18 Richard S Hunter Visual densitometer
DE1911745U (en) * 1964-08-04 1965-03-11 A Ott G M B H DRUM RECORDER FOR METEOROLOGICAL MEASURING DEVICES, IN PARTICULAR FOR REGISTERING LEVELS OR. DGL.
US3518013A (en) * 1966-09-26 1970-06-30 Itek Corp Densitometer
US4289405A (en) * 1978-10-13 1981-09-15 Tobias Philip E Color monitoring system for use in creating colored displays
DE2901980C2 (en) * 1979-01-19 1982-09-16 Grapho-Metronic Meß- und Regeltechnik GmbH & Co, KG, 8000 München Device for controlling the inking unit of a sheet-fed offset printing machine
DE3024773A1 (en) * 1980-06-30 1982-01-28 Grapho-Metronic Meß- und Regeltechnik GmbH & Co, KG, 8000 München METHOD AND DEVICE FOR CONTROLLING AND CONTROLLING THE COLORING OF A MULTICOLOR PRINTING MACHINE
DE3030901C2 (en) * 1980-08-14 1982-05-19 Agfa-Gevaert Ag, 5090 Leverkusen Interchangeable master stage in a photographic copier

Also Published As

Publication number Publication date
JPS593312A (en) 1984-01-10
JPH0347449B2 (en) 1991-07-19
EP0096277A2 (en) 1983-12-21
DE3220799A1 (en) 1983-12-08
EP0096277A3 (en) 1985-04-10
US4568185A (en) 1986-02-04
DE3373179D1 (en) 1987-10-01
DE3220799C2 (en) 1985-03-07

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