EP0093876B1 - Vorrichtung auf einem Mess- und/oder Abmustertisch zur Beurteilung der Druckqualität von bedruckten Bogen - Google Patents

Vorrichtung auf einem Mess- und/oder Abmustertisch zur Beurteilung der Druckqualität von bedruckten Bogen Download PDF

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Publication number
EP0093876B1
EP0093876B1 EP83103423A EP83103423A EP0093876B1 EP 0093876 B1 EP0093876 B1 EP 0093876B1 EP 83103423 A EP83103423 A EP 83103423A EP 83103423 A EP83103423 A EP 83103423A EP 0093876 B1 EP0093876 B1 EP 0093876B1
Authority
EP
European Patent Office
Prior art keywords
sheet
wedge
measuring
front part
matching table
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
EP83103423A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0093876A1 (de
Inventor
Helmut Dr. Kipphan
Anton Rodi
Peter Blaser
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0093876A1 publication Critical patent/EP0093876A1/de
Application granted granted Critical
Publication of EP0093876B1 publication Critical patent/EP0093876B1/de
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 and / or sampling table with a sheet support for assessing the print quality of printed sheets, a lighting fixture being arranged above the measuring and / or sampling table.
  • Sampling tables and desks are known which result in dazzling areas running parallel to the front edge of the table or desk within the field of view.
  • the position and width of the glare areas depends on the size of a viewer and his position relative to the desk as well as on the inclination of the table surface and on the arrangement of the lighting fixture.
  • the illuminating lamp of conventional design is suspended obliquely behind the viewer.
  • color matching booths which, due to the concave shape of the support surface, largely cause no reflection or glare (Deutscher Drucker No. 38 / 26-11-1981, page XIX). This creates a uniform light density and prevents shadows from being cast.
  • the object of the invention is to guarantee, with simple, cost-saving means, freedom from glare and reflection when assessing the print quality of printed sheets.
  • the front partial surface is either designed as a wedge or it belongs to a fold-out table wedge.
  • the front partial surface can be equipped with a surface that can be illuminated entirely or partially on the right and left side in the form of fields of view in order to check the position of registration marks on the front and back of the sheet.
  • the wedge is made of lightweight material and is arranged to be removable. This ensures the desired flat surface for measurement with hand densitometers again.
  • a stop plate is attached to the front partial surface to prevent the sheet from slipping.
  • the device according to the invention enables a simple and cheap production of sample tables.
  • the freedom of reflection and glare provided by the inclined front partial surface is advantageous for the visual assessment of color uniformity or color difference.
  • a flat sheet storage surface can be produced again, which ensures the handling of densitometers for color density measurement in the entire patterning area.
  • the surface which can be illuminated from the inside, meets the wishes of many printers very quickly, as this enables the register inaccuracy to be checked quickly.
  • a support table 1 shown in a side view is shown in FIG.
  • This support table 1 is electrically coupled to a printing press in such a way that the adjustment of the ink zone adjusting screws can be carried out with the help of the operating keyboard 3.
  • the sheet support 5 of the matching table 1 consists of a front partial surface 18 and a rear partial surface 19.
  • the front partial surface 18 is provided as part of a wedge-shaped attachment 2 for preventing reflection and glare.
  • the wedge-shaped attachment 2 changes the angle of incidence in the front region of the sheet support surface 5 in such a way that glare from the reflected rays 7, which are now pointing away from the viewer, is prevented.
  • the wedge-shaped attachment 2 is shown in side view.
  • the sheet storage surface 13 of the wedge-shaped attachment 2 corresponds to the front partial surface 18 and is provided with radiolucent fields of view 11 on the right and left side, as shown in FIG. 3.
  • the lighting fixture 10 is fastened with a holder 12 below the radiolucent field of view 11. With the help of the switch 9, the lighting fixture 10 can be switched on and off.
  • the voltage supply takes place via the electrical supply line 15 (FIG. 3).
  • the stop plate 8 is mounted on the wedge-shaped attachment 2 so that it protrudes beyond the surface 13 to prevent the sheet from slipping.
  • FIG. 3 shows a top view of the wedge-shaped attachment 2.
  • the registration crosses 17 of which can be clearly distinguished by the radiolucent fields of view 11 for visual assessment of registration inaccuracies.
  • the width of the wedge-shaped attachment 2 can be chosen so that commercially available densitometers can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Dental Preparations (AREA)
EP83103423A 1982-05-06 1983-04-08 Vorrichtung auf einem Mess- und/oder Abmustertisch zur Beurteilung der Druckqualität von bedruckten Bogen Expired EP0093876B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3216991A DE3216991C2 (de) 1982-05-06 1982-05-06 Bogenauflage auf einem Auflagetisch
DE3216991 1982-05-06

Publications (2)

Publication Number Publication Date
EP0093876A1 EP0093876A1 (de) 1983-11-16
EP0093876B1 true EP0093876B1 (de) 1985-07-17

Family

ID=6162897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103423A Expired EP0093876B1 (de) 1982-05-06 1983-04-08 Vorrichtung auf einem Mess- und/oder Abmustertisch zur Beurteilung der Druckqualität von bedruckten Bogen

Country Status (12)

Country Link
US (1) US4668090A (es)
EP (1) EP0093876B1 (es)
JP (1) JPS5919A (es)
AR (1) AR231510A1 (es)
AT (1) AT386157B (es)
CA (1) CA1208038A (es)
DE (1) DE3216991C2 (es)
DK (1) DK123483A (es)
ES (1) ES271810Y (es)
MX (1) MX158718A (es)
NO (1) NO157201C (es)
ZA (1) ZA831630B (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3607984C1 (de) * 1986-03-11 1986-10-16 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Anordnung zur Abmusterung eines Druckerzeugnisses
DE3804629A1 (de) * 1988-02-14 1989-08-24 White Screen Spezialleuchten G Anordnung aus leuchttisch, vorlagenhalter und auflichteinrichtung, insbesondere als arbeitsplatz fuer das graphische gewerbe
DE8802285U1 (de) * 1988-02-14 1988-06-09 White Screen Spezialleuchten GmbH, 7311 Neidlingen Leuchttisch mit Vorlagenhalter und Auflichteinrichtung, insbesondere für einen Arbeitsplatz für das graphische Gewerbe
DE4401534C1 (de) * 1994-01-20 1995-03-16 Heidelberger Druckmasch Ag Abmusterungseinrichtung zur visuellen Auflichtbeurteilung von flexiblen Vorlagen
US5805280A (en) * 1995-09-28 1998-09-08 Goss Graphic Systems, Inc. Control system for a printing press
DE19844053C2 (de) * 1998-09-25 2001-05-23 Willing Gmbh Dr Ing Vorrrichtung zur Messung oder visuellen Abmusterung der Farbe oder von Farbeffekten auf einem Oberflächenelement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1984898A (en) * 1930-02-21 1934-12-18 Firm Durkopp Werke A G Process and apparatus for copying photographs
GB386318A (en) * 1931-06-05 1933-01-06 Seitz Werke Gmbh Improvements in or relating to sheet registering devices for printing machines
US2101710A (en) * 1934-03-17 1937-12-07 Agfa Ansco Corp Apparatus for measuring the region of density of a negative
US3104492A (en) * 1961-08-03 1963-09-24 Lakeside Ind Inc Tracing device
US3675948A (en) * 1969-09-10 1972-07-11 American Bank Note Co Printing method and article for hiding halftone images
JPS534454A (en) * 1977-06-06 1978-01-17 Torio Kk Monostable multivibrator
US4180741A (en) * 1978-06-07 1979-12-25 Harris Corporation Apparatus for determining image areas for printing with calibration
US4159871A (en) * 1978-08-09 1979-07-03 Arnone Joseph A Photographic retouching apparatus

Also Published As

Publication number Publication date
NO157201B (no) 1987-11-02
DE3216991A1 (de) 1983-11-10
ES271810U (es) 1983-10-16
AT386157B (de) 1988-07-11
EP0093876A1 (de) 1983-11-16
DE3216991C2 (de) 1984-08-09
DK123483A (da) 1983-11-07
US4668090A (en) 1987-05-26
ATA107983A (de) 1987-12-15
ZA831630B (en) 1983-11-30
JPS5919A (ja) 1984-01-05
CA1208038A (en) 1986-07-22
NO831587L (no) 1983-11-07
MX158718A (es) 1989-03-03
DK123483D0 (da) 1983-03-17
AR231510A1 (es) 1984-12-28
JPH0238201B2 (es) 1990-08-29
ES271810Y (es) 1984-04-16
NO157201C (no) 1988-02-10

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