EP0096227A2 - Dispositif pour balayer un cliché d'impresssion - Google Patents

Dispositif pour balayer un cliché d'impresssion 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
Authority
EP
European Patent Office
Prior art keywords
printing
printing plate
scanning
plate
optical
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.)
Granted
Application number
EP83104505A
Other languages
German (de)
English (en)
Other versions
EP0096227A3 (en
EP0096227B1 (fr
Inventor
Jürgen Rehder
Siegfried Schuhmann
Gerd Steiner
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6165126&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0096227(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT83104505T priority Critical patent/ATE36276T1/de
Publication of EP0096227A2 publication Critical patent/EP0096227A2/fr
Publication of EP0096227A3 publication Critical patent/EP0096227A3/de
Application granted granted Critical
Publication of EP0096227B1 publication Critical patent/EP0096227B1/fr
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
    • B41F33/0027—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.
EP83104505A 1982-06-03 1983-05-07 Dispositif pour balayer un cliché d'impresssion Expired EP0096227B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83104505T ATE36276T1 (de) 1982-06-03 1983-05-07 Vorrichtung zur abtastung von druckplatten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3220800A DE3220800C2 (de) 1982-06-03 1982-06-03 Vorrichtung zur Abtastung von Druckplatten
DE3220800 1982-06-03

Publications (3)

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

Family

ID=6165126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104505A Expired EP0096227B1 (fr) 1982-06-03 1983-05-07 Dispositif pour balayer un cliché d'impresssion

Country Status (5)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142469A1 (fr) * 1983-11-04 1985-05-22 GRETAG Aktiengesellschaft Procédé et dispositif de réglage d'encre dans une rotative offset et rotative offset équipée d'un tel dispositif
EP0143228A1 (fr) * 1983-09-21 1985-06-05 Albert-Frankenthal AG Procédé et dispositif de réglage des organes de dosage des zones d'encrage d'un encrier
WO2008049510A1 (fr) * 2006-10-23 2008-05-02 Hell Gravure Systems Gmbh & Co. Kg Procédé et dispositif pour contrôler la qualité d'au moins un cylindre d'impression, et chaîne de fabrication équipée d'un tel dispositif

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339552A1 (de) * 1983-11-02 1985-05-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Voreinstellen an druckmaschinen
US4649502A (en) * 1983-11-04 1987-03-10 Gretag Aktiengesellschaft Process and apparatus for evaluating printing quality and for regulating the ink feed controls in an offset printing machine
JPS60263807A (ja) * 1984-06-12 1985-12-27 Dainippon Screen Mfg Co Ltd プリント配線板のパタ−ン欠陥検査装置
US5182721A (en) * 1985-12-10 1993-01-26 Heidelberger Druckmaschinen Aktiengesellschaft Process and apparatus for controlling the inking process in a printing machine
DE3643720C2 (de) * 1986-12-20 1994-03-10 Heidelberger Druckmasch Ag Verfahren zum Ermitteln von Steuer- /Regelgrößen für das Farbwerk von Druckmaschinen
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
DE58901780D1 (de) * 1988-01-14 1992-08-13 Gretag Ag Verfahren und vorrichtung zur farbregelung einer druckmaschine.
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
WO1999016010A1 (fr) * 1997-09-22 1999-04-01 Intelligent Reasoning Systems, Inc. Systeme et procede d'inspection visuelle automatisee servant a detecter et a classer des defauts
JP4216001B2 (ja) * 2002-05-21 2009-01-28 大日本スクリーン製造株式会社 印刷機のインキ供給方法および印刷機のインキ供給装置
JP2006001049A (ja) * 2004-06-15 2006-01-05 Fuji Photo Film Co Ltd 画像記録装置
WO2008049501A2 (fr) * 2006-10-23 2008-05-02 Fischer & Krecke Gmbh Presse rotative et procédé pour ajuster un de ses cylindres
ES2339691T5 (es) * 2006-10-23 2014-07-18 Bobst Bielefeld Gmbh Procedimiento de ajuste de un rodillo en una prensa de imprimir giratoria
WO2008049500A2 (fr) * 2006-10-23 2008-05-02 Fischer & Krecke Gmbh Presse rotative et procédé pour ajuster un de ses cylindres
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 (de) * 1980-03-13 1981-09-17 Heimann Gmbh, 6200 Wiesbaden Optische anordnung zum messen des mittleren grauwertes einer reflektierenden flaeche

Family Cites Families (17)

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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 (fr) * 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 (de) * 1977-06-25 1979-05-10 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Eulrichtung zur Kontrolle und Regelung der Farbgebung an Druckmaschinen
JPS5952069B2 (ja) * 1977-12-15 1984-12-18 凸版印刷株式会社 使用インキ量予測装置
US4180741A (en) * 1978-06-07 1979-12-25 Harris Corporation Apparatus for determining image areas for printing with calibration
DE3029273A1 (de) * 1979-08-03 1981-02-19 Dainippon Printing Co Ltd Vorrichtung zum messen des druckbildbereiches einer offset-druckplatte
JPS5624508A (en) * 1979-08-03 1981-03-09 Dainippon Printing Co Ltd Device for measuring picture area from offset printing plate
DE2950650A1 (de) * 1979-12-15 1981-06-19 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zur opto- elektronischen messung der flaechendeckung einer offset-druckplatte oder einer der offset-druckplattenherstellung dienenden druckvorlage
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 (de) * 1980-03-13 1981-09-17 Heimann Gmbh, 6200 Wiesbaden Optische anordnung zum messen des mittleren grauwertes einer reflektierenden flaeche

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143228A1 (fr) * 1983-09-21 1985-06-05 Albert-Frankenthal AG Procédé et dispositif de réglage des organes de dosage des zones d'encrage d'un encrier
EP0142469A1 (fr) * 1983-11-04 1985-05-22 GRETAG Aktiengesellschaft Procédé et dispositif de réglage d'encre dans une rotative offset et rotative offset équipée d'un tel dispositif
EP0142470A1 (fr) 1983-11-04 1985-05-22 GRETAG Aktiengesellschaft Procédé et dispositif d'analyse de la qualité d'impression d'un imprimé, de préférence imprimé sur une rotative offset et rotative offset équipée d'un tel dispositif
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 (fr) * 2006-10-23 2008-05-02 Hell Gravure Systems Gmbh & Co. Kg Procédé et dispositif pour contrôler la qualité d'au moins un cylindre d'impression, et chaîne de fabrication équipée d'un tel dispositif

Also Published As

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

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